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      1 % texinfo.tex -- TeX macros to handle Texinfo files.
      2 % 
      3 % Load plain if necessary, i.e., if running under initex.
      4 \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
      5 %
      6 \def\texinfoversion{2012-11-08.11}
      7 %
      8 % Copyright 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
      9 % 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
     10 % 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
     11 %
     12 % This texinfo.tex file is free software: you can redistribute it and/or
     13 % modify it under the terms of the GNU General Public License as
     14 % published by the Free Software Foundation, either version 3 of the
     15 % License, or (at your option) any later version.
     16 %
     17 % This texinfo.tex file is distributed in the hope that it will be
     18 % useful, but WITHOUT ANY WARRANTY; without even the implied warranty
     19 % of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     20 % General Public License for more details.
     21 %
     22 % You should have received a copy of the GNU General Public License
     23 % along with this program.  If not, see <http://www.gnu.org/licenses/>.
     24 %
     25 % As a special exception, when this file is read by TeX when processing
     26 % a Texinfo source document, you may use the result without
     27 % restriction.  (This has been our intent since Texinfo was invented.)
     28 %
     29 % Please try the latest version of texinfo.tex before submitting bug
     30 % reports; you can get the latest version from:
     31 %   http://ftp.gnu.org/gnu/texinfo/ (the Texinfo release area), or
     32 %   http://ftpmirror.gnu.org/texinfo/ (same, via a mirror), or
     33 %   http://www.gnu.org/software/texinfo/ (the Texinfo home page)
     34 % The texinfo.tex in any given distribution could well be out
     35 % of date, so if that's what you're using, please check.
     36 %
     37 % Send bug reports to bug-texinfo (a] gnu.org.  Please include including a
     38 % complete document in each bug report with which we can reproduce the
     39 % problem.  Patches are, of course, greatly appreciated.
     40 %
     41 % To process a Texinfo manual with TeX, it's most reliable to use the
     42 % texi2dvi shell script that comes with the distribution.  For a simple
     43 % manual foo.texi, however, you can get away with this:
     44 %   tex foo.texi
     45 %   texindex foo.??
     46 %   tex foo.texi
     47 %   tex foo.texi
     48 %   dvips foo.dvi -o  # or whatever; this makes foo.ps.
     49 % The extra TeX runs get the cross-reference information correct.
     50 % Sometimes one run after texindex suffices, and sometimes you need more
     51 % than two; texi2dvi does it as many times as necessary.
     52 %
     53 % It is possible to adapt texinfo.tex for other languages, to some
     54 % extent.  You can get the existing language-specific files from the
     55 % full Texinfo distribution.
     56 %
     57 % The GNU Texinfo home page is http://www.gnu.org/software/texinfo.
     58 
     59 
     60 \message{Loading texinfo [version \texinfoversion]:}
     61 
     62 % If in a .fmt file, print the version number
     63 % and turn on active characters that we couldn't do earlier because
     64 % they might have appeared in the input file name.
     65 \everyjob{\message{[Texinfo version \texinfoversion]}%
     66   \catcode`+=\active \catcode`\_=\active}
     67 
     68 \chardef\other=12
     69 
     70 % We never want plain's \outer definition of \+ in Texinfo.
     71 % For @tex, we can use \tabalign.
     72 \let\+ = \relax
     73 
     74 % Save some plain tex macros whose names we will redefine.
     75 \let\ptexb=\b
     76 \let\ptexbullet=\bullet
     77 \let\ptexc=\c
     78 \let\ptexcomma=\,
     79 \let\ptexdot=\.
     80 \let\ptexdots=\dots
     81 \let\ptexend=\end
     82 \let\ptexequiv=\equiv
     83 \let\ptexexclam=\!
     84 \let\ptexfootnote=\footnote
     85 \let\ptexgtr=>
     86 \let\ptexhat=^
     87 \let\ptexi=\i
     88 \let\ptexindent=\indent
     89 \let\ptexinsert=\insert
     90 \let\ptexlbrace=\{
     91 \let\ptexless=<
     92 \let\ptexnewwrite\newwrite
     93 \let\ptexnoindent=\noindent
     94 \let\ptexplus=+
     95 \let\ptexraggedright=\raggedright
     96 \let\ptexrbrace=\}
     97 \let\ptexslash=\/
     98 \let\ptexstar=\*
     99 \let\ptext=\t
    100 \let\ptextop=\top
    101 {\catcode`\'=\active \global\let\ptexquoteright'}% active in plain's math mode
    102 
    103 % If this character appears in an error message or help string, it
    104 % starts a new line in the output.
    105 \newlinechar = `^^J
    106 
    107 % Use TeX 3.0's \inputlineno to get the line number, for better error
    108 % messages, but if we're using an old version of TeX, don't do anything.
    109 %
    110 \ifx\inputlineno\thisisundefined
    111   \let\linenumber = \empty % Pre-3.0.
    112 \else
    113   \def\linenumber{l.\the\inputlineno:\space}
    114 \fi
    115 
    116 % Set up fixed words for English if not already set.
    117 \ifx\putwordAppendix\undefined  \gdef\putwordAppendix{Appendix}\fi
    118 \ifx\putwordChapter\undefined   \gdef\putwordChapter{Chapter}\fi
    119 \ifx\putworderror\undefined     \gdef\putworderror{error}\fi
    120 \ifx\putwordfile\undefined      \gdef\putwordfile{file}\fi
    121 \ifx\putwordin\undefined        \gdef\putwordin{in}\fi
    122 \ifx\putwordIndexIsEmpty\undefined       \gdef\putwordIndexIsEmpty{(Index is empty)}\fi
    123 \ifx\putwordIndexNonexistent\undefined   \gdef\putwordIndexNonexistent{(Index is nonexistent)}\fi
    124 \ifx\putwordInfo\undefined      \gdef\putwordInfo{Info}\fi
    125 \ifx\putwordInstanceVariableof\undefined \gdef\putwordInstanceVariableof{Instance Variable of}\fi
    126 \ifx\putwordMethodon\undefined  \gdef\putwordMethodon{Method on}\fi
    127 \ifx\putwordNoTitle\undefined   \gdef\putwordNoTitle{No Title}\fi
    128 \ifx\putwordof\undefined        \gdef\putwordof{of}\fi
    129 \ifx\putwordon\undefined        \gdef\putwordon{on}\fi
    130 \ifx\putwordpage\undefined      \gdef\putwordpage{page}\fi
    131 \ifx\putwordsection\undefined   \gdef\putwordsection{section}\fi
    132 \ifx\putwordSection\undefined   \gdef\putwordSection{Section}\fi
    133 \ifx\putwordsee\undefined       \gdef\putwordsee{see}\fi
    134 \ifx\putwordSee\undefined       \gdef\putwordSee{See}\fi
    135 \ifx\putwordShortTOC\undefined  \gdef\putwordShortTOC{Short Contents}\fi
    136 \ifx\putwordTOC\undefined       \gdef\putwordTOC{Table of Contents}\fi
    137 %
    138 \ifx\putwordMJan\undefined \gdef\putwordMJan{January}\fi
    139 \ifx\putwordMFeb\undefined \gdef\putwordMFeb{February}\fi
    140 \ifx\putwordMMar\undefined \gdef\putwordMMar{March}\fi
    141 \ifx\putwordMApr\undefined \gdef\putwordMApr{April}\fi
    142 \ifx\putwordMMay\undefined \gdef\putwordMMay{May}\fi
    143 \ifx\putwordMJun\undefined \gdef\putwordMJun{June}\fi
    144 \ifx\putwordMJul\undefined \gdef\putwordMJul{July}\fi
    145 \ifx\putwordMAug\undefined \gdef\putwordMAug{August}\fi
    146 \ifx\putwordMSep\undefined \gdef\putwordMSep{September}\fi
    147 \ifx\putwordMOct\undefined \gdef\putwordMOct{October}\fi
    148 \ifx\putwordMNov\undefined \gdef\putwordMNov{November}\fi
    149 \ifx\putwordMDec\undefined \gdef\putwordMDec{December}\fi
    150 %
    151 \ifx\putwordDefmac\undefined    \gdef\putwordDefmac{Macro}\fi
    152 \ifx\putwordDefspec\undefined   \gdef\putwordDefspec{Special Form}\fi
    153 \ifx\putwordDefvar\undefined    \gdef\putwordDefvar{Variable}\fi
    154 \ifx\putwordDefopt\undefined    \gdef\putwordDefopt{User Option}\fi
    155 \ifx\putwordDeffunc\undefined   \gdef\putwordDeffunc{Function}\fi
    156 
    157 % Since the category of space is not known, we have to be careful.
    158 \chardef\spacecat = 10
    159 \def\spaceisspace{\catcode`\ =\spacecat}
    160 
    161 % sometimes characters are active, so we need control sequences.
    162 \chardef\ampChar   = `\&
    163 \chardef\colonChar = `\:
    164 \chardef\commaChar = `\,
    165 \chardef\dashChar  = `\-
    166 \chardef\dotChar   = `\.
    167 \chardef\exclamChar= `\!
    168 \chardef\hashChar  = `\#
    169 \chardef\lquoteChar= `\`
    170 \chardef\questChar = `\?
    171 \chardef\rquoteChar= `\'
    172 \chardef\semiChar  = `\;
    173 \chardef\slashChar = `\/
    174 \chardef\underChar = `\_
    175 
    176 % Ignore a token.
    177 %
    178 \def\gobble#1{}
    179 
    180 % The following is used inside several \edef's.
    181 \def\makecsname#1{\expandafter\noexpand\csname#1\endcsname}
    182 
    183 % Hyphenation fixes.
    184 \hyphenation{
    185   Flor-i-da Ghost-script Ghost-view Mac-OS Post-Script
    186   ap-pen-dix bit-map bit-maps
    187   data-base data-bases eshell fall-ing half-way long-est man-u-script
    188   man-u-scripts mini-buf-fer mini-buf-fers over-view par-a-digm
    189   par-a-digms rath-er rec-tan-gu-lar ro-bot-ics se-vere-ly set-up spa-ces
    190   spell-ing spell-ings
    191   stand-alone strong-est time-stamp time-stamps which-ever white-space
    192   wide-spread wrap-around
    193 }
    194 
    195 % Margin to add to right of even pages, to left of odd pages.
    196 \newdimen\bindingoffset
    197 \newdimen\normaloffset
    198 \newdimen\pagewidth \newdimen\pageheight
    199 
    200 % For a final copy, take out the rectangles
    201 % that mark overfull boxes (in case you have decided
    202 % that the text looks ok even though it passes the margin).
    203 %
    204 \def\finalout{\overfullrule=0pt }
    205 
    206 % Sometimes it is convenient to have everything in the transcript file
    207 % and nothing on the terminal.  We don't just call \tracingall here,
    208 % since that produces some useless output on the terminal.  We also make
    209 % some effort to order the tracing commands to reduce output in the log
    210 % file; cf. trace.sty in LaTeX.
    211 %
    212 \def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
    213 \def\loggingall{%
    214   \tracingstats2
    215   \tracingpages1
    216   \tracinglostchars2  % 2 gives us more in etex
    217   \tracingparagraphs1
    218   \tracingoutput1
    219   \tracingmacros2
    220   \tracingrestores1
    221   \showboxbreadth\maxdimen \showboxdepth\maxdimen
    222   \ifx\eTeXversion\thisisundefined\else % etex gives us more logging
    223     \tracingscantokens1
    224     \tracingifs1
    225     \tracinggroups1
    226     \tracingnesting2
    227     \tracingassigns1
    228   \fi
    229   \tracingcommands3  % 3 gives us more in etex
    230   \errorcontextlines16
    231 }%
    232 
    233 % @errormsg{MSG}.  Do the index-like expansions on MSG, but if things
    234 % aren't perfect, it's not the end of the world, being an error message,
    235 % after all.
    236 % 
    237 \def\errormsg{\begingroup \indexnofonts \doerrormsg}
    238 \def\doerrormsg#1{\errmessage{#1}}
    239 
    240 % add check for \lastpenalty to plain's definitions.  If the last thing
    241 % we did was a \nobreak, we don't want to insert more space.
    242 %
    243 \def\smallbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\smallskipamount
    244   \removelastskip\penalty-50\smallskip\fi\fi}
    245 \def\medbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\medskipamount
    246   \removelastskip\penalty-100\medskip\fi\fi}
    247 \def\bigbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\bigskipamount
    248   \removelastskip\penalty-200\bigskip\fi\fi}
    249 
    250 % Do @cropmarks to get crop marks.
    251 %
    252 \newif\ifcropmarks
    253 \let\cropmarks = \cropmarkstrue
    254 %
    255 % Dimensions to add cropmarks at corners.
    256 % Added by P. A. MacKay, 12 Nov. 1986
    257 %
    258 \newdimen\outerhsize \newdimen\outervsize % set by the paper size routines
    259 \newdimen\cornerlong  \cornerlong=1pc
    260 \newdimen\cornerthick \cornerthick=.3pt
    261 \newdimen\topandbottommargin \topandbottommargin=.75in
    262 
    263 % Output a mark which sets \thischapter, \thissection and \thiscolor.
    264 % We dump everything together because we only have one kind of mark.
    265 % This works because we only use \botmark / \topmark, not \firstmark.
    266 %
    267 % A mark contains a subexpression of the \ifcase ... \fi construct.
    268 % \get*marks macros below extract the needed part using \ifcase.
    269 %
    270 % Another complication is to let the user choose whether \thischapter
    271 % (\thissection) refers to the chapter (section) in effect at the top
    272 % of a page, or that at the bottom of a page.  The solution is
    273 % described on page 260 of The TeXbook.  It involves outputting two
    274 % marks for the sectioning macros, one before the section break, and
    275 % one after.  I won't pretend I can describe this better than DEK...
    276 \def\domark{%
    277   \toks0=\expandafter{\lastchapterdefs}%
    278   \toks2=\expandafter{\lastsectiondefs}%
    279   \toks4=\expandafter{\prevchapterdefs}%
    280   \toks6=\expandafter{\prevsectiondefs}%
    281   \toks8=\expandafter{\lastcolordefs}%
    282   \mark{%
    283                    \the\toks0 \the\toks2
    284       \noexpand\or \the\toks4 \the\toks6
    285     \noexpand\else \the\toks8
    286   }%
    287 }
    288 % \topmark doesn't work for the very first chapter (after the title
    289 % page or the contents), so we use \firstmark there -- this gets us
    290 % the mark with the chapter defs, unless the user sneaks in, e.g.,
    291 % @setcolor (or @url, or @link, etc.) between @contents and the very
    292 % first @chapter.
    293 \def\gettopheadingmarks{%
    294   \ifcase0\topmark\fi
    295   \ifx\thischapter\empty \ifcase0\firstmark\fi \fi
    296 }
    297 \def\getbottomheadingmarks{\ifcase1\botmark\fi}
    298 \def\getcolormarks{\ifcase2\topmark\fi}
    299 
    300 % Avoid "undefined control sequence" errors.
    301 \def\lastchapterdefs{}
    302 \def\lastsectiondefs{}
    303 \def\prevchapterdefs{}
    304 \def\prevsectiondefs{}
    305 \def\lastcolordefs{}
    306 
    307 % Main output routine.
    308 \chardef\PAGE = 255
    309 \output = {\onepageout{\pagecontents\PAGE}}
    310 
    311 \newbox\headlinebox
    312 \newbox\footlinebox
    313 
    314 % \onepageout takes a vbox as an argument.  Note that \pagecontents
    315 % does insertions, but you have to call it yourself.
    316 \def\onepageout#1{%
    317   \ifcropmarks \hoffset=0pt \else \hoffset=\normaloffset \fi
    318   %
    319   \ifodd\pageno  \advance\hoffset by \bindingoffset
    320   \else \advance\hoffset by -\bindingoffset\fi
    321   %
    322   % Do this outside of the \shipout so @code etc. will be expanded in
    323   % the headline as they should be, not taken literally (outputting ''code).
    324   \ifodd\pageno \getoddheadingmarks \else \getevenheadingmarks \fi
    325   \setbox\headlinebox = \vbox{\let\hsize=\pagewidth \makeheadline}%
    326   \ifodd\pageno \getoddfootingmarks \else \getevenfootingmarks \fi
    327   \setbox\footlinebox = \vbox{\let\hsize=\pagewidth \makefootline}%
    328   %
    329   {%
    330     % Have to do this stuff outside the \shipout because we want it to
    331     % take effect in \write's, yet the group defined by the \vbox ends
    332     % before the \shipout runs.
    333     %
    334     \indexdummies         % don't expand commands in the output.
    335     \normalturnoffactive  % \ in index entries must not stay \, e.g., if
    336                % the page break happens to be in the middle of an example.
    337                % We don't want .vr (or whatever) entries like this:
    338                % \entry{{\tt \indexbackslash }acronym}{32}{\code {\acronym}}
    339                % "\acronym" won't work when it's read back in;
    340                % it needs to be
    341                % {\code {{\tt \backslashcurfont }acronym}
    342     \shipout\vbox{%
    343       % Do this early so pdf references go to the beginning of the page.
    344       \ifpdfmakepagedest \pdfdest name{\the\pageno} xyz\fi
    345       %
    346       \ifcropmarks \vbox to \outervsize\bgroup
    347         \hsize = \outerhsize
    348         \vskip-\topandbottommargin
    349         \vtop to0pt{%
    350           \line{\ewtop\hfil\ewtop}%
    351           \nointerlineskip
    352           \line{%
    353             \vbox{\moveleft\cornerthick\nstop}%
    354             \hfill
    355             \vbox{\moveright\cornerthick\nstop}%
    356           }%
    357           \vss}%
    358         \vskip\topandbottommargin
    359         \line\bgroup
    360           \hfil % center the page within the outer (page) hsize.
    361           \ifodd\pageno\hskip\bindingoffset\fi
    362           \vbox\bgroup
    363       \fi
    364       %
    365       \unvbox\headlinebox
    366       \pagebody{#1}%
    367       \ifdim\ht\footlinebox > 0pt
    368         % Only leave this space if the footline is nonempty.
    369         % (We lessened \vsize for it in \oddfootingyyy.)
    370         % The \baselineskip=24pt in plain's \makefootline has no effect.
    371         \vskip 24pt
    372         \unvbox\footlinebox
    373       \fi
    374       %
    375       \ifcropmarks
    376           \egroup % end of \vbox\bgroup
    377         \hfil\egroup % end of (centering) \line\bgroup
    378         \vskip\topandbottommargin plus1fill minus1fill
    379         \boxmaxdepth = \cornerthick
    380         \vbox to0pt{\vss
    381           \line{%
    382             \vbox{\moveleft\cornerthick\nsbot}%
    383             \hfill
    384             \vbox{\moveright\cornerthick\nsbot}%
    385           }%
    386           \nointerlineskip
    387           \line{\ewbot\hfil\ewbot}%
    388         }%
    389       \egroup % \vbox from first cropmarks clause
    390       \fi
    391     }% end of \shipout\vbox
    392   }% end of group with \indexdummies
    393   \advancepageno
    394   \ifnum\outputpenalty>-20000 \else\dosupereject\fi
    395 }
    396 
    397 \newinsert\margin \dimen\margin=\maxdimen
    398 
    399 \def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
    400 {\catcode`\@ =11
    401 \gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
    402 % marginal hacks, juha (a] viisa.uucp (Juha Takala)
    403 \ifvoid\margin\else % marginal info is present
    404   \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi
    405 \dimen@=\dp#1\relax \unvbox#1\relax
    406 \ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
    407 \ifr@ggedbottom \kern-\dimen@ \vfil \fi}
    408 }
    409 
    410 % Here are the rules for the cropmarks.  Note that they are
    411 % offset so that the space between them is truly \outerhsize or \outervsize
    412 % (P. A. MacKay, 12 November, 1986)
    413 %
    414 \def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
    415 \def\nstop{\vbox
    416   {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
    417 \def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
    418 \def\nsbot{\vbox
    419   {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
    420 
    421 % Parse an argument, then pass it to #1.  The argument is the rest of
    422 % the input line (except we remove a trailing comment).  #1 should be a
    423 % macro which expects an ordinary undelimited TeX argument.
    424 %
    425 \def\parsearg{\parseargusing{}}
    426 \def\parseargusing#1#2{%
    427   \def\argtorun{#2}%
    428   \begingroup
    429     \obeylines
    430     \spaceisspace
    431     #1%
    432     \parseargline\empty% Insert the \empty token, see \finishparsearg below.
    433 }
    434 
    435 {\obeylines %
    436   \gdef\parseargline#1^^M{%
    437     \endgroup % End of the group started in \parsearg.
    438     \argremovecomment #1\comment\ArgTerm%
    439   }%
    440 }
    441 
    442 % First remove any @comment, then any @c comment.
    443 \def\argremovecomment#1\comment#2\ArgTerm{\argremovec #1\c\ArgTerm}
    444 \def\argremovec#1\c#2\ArgTerm{\argcheckspaces#1\^^M\ArgTerm}
    445 
    446 % Each occurrence of `\^^M' or `<space>\^^M' is replaced by a single space.
    447 %
    448 % \argremovec might leave us with trailing space, e.g.,
    449 %    @end itemize  @c foo
    450 % This space token undergoes the same procedure and is eventually removed
    451 % by \finishparsearg.
    452 %
    453 \def\argcheckspaces#1\^^M{\argcheckspacesX#1\^^M \^^M}
    454 \def\argcheckspacesX#1 \^^M{\argcheckspacesY#1\^^M}
    455 \def\argcheckspacesY#1\^^M#2\^^M#3\ArgTerm{%
    456   \def\temp{#3}%
    457   \ifx\temp\empty
    458     % Do not use \next, perhaps the caller of \parsearg uses it; reuse \temp:
    459     \let\temp\finishparsearg
    460   \else
    461     \let\temp\argcheckspaces
    462   \fi
    463   % Put the space token in:
    464   \temp#1 #3\ArgTerm
    465 }
    466 
    467 % If a _delimited_ argument is enclosed in braces, they get stripped; so
    468 % to get _exactly_ the rest of the line, we had to prevent such situation.
    469 % We prepended an \empty token at the very beginning and we expand it now,
    470 % just before passing the control to \argtorun.
    471 % (Similarly, we have to think about #3 of \argcheckspacesY above: it is
    472 % either the null string, or it ends with \^^M---thus there is no danger
    473 % that a pair of braces would be stripped.
    474 %
    475 % But first, we have to remove the trailing space token.
    476 %
    477 \def\finishparsearg#1 \ArgTerm{\expandafter\argtorun\expandafter{#1}}
    478 
    479 % \parseargdef\foo{...}
    480 %	is roughly equivalent to
    481 % \def\foo{\parsearg\Xfoo}
    482 % \def\Xfoo#1{...}
    483 %
    484 % Actually, I use \csname\string\foo\endcsname, ie. \\foo, as it is my
    485 % favourite TeX trick.  --kasal, 16nov03
    486 
    487 \def\parseargdef#1{%
    488   \expandafter \doparseargdef \csname\string#1\endcsname #1%
    489 }
    490 \def\doparseargdef#1#2{%
    491   \def#2{\parsearg#1}%
    492   \def#1##1%
    493 }
    494 
    495 % Several utility definitions with active space:
    496 {
    497   \obeyspaces
    498   \gdef\obeyedspace{ }
    499 
    500   % Make each space character in the input produce a normal interword
    501   % space in the output.  Don't allow a line break at this space, as this
    502   % is used only in environments like @example, where each line of input
    503   % should produce a line of output anyway.
    504   %
    505   \gdef\sepspaces{\obeyspaces\let =\tie}
    506 
    507   % If an index command is used in an @example environment, any spaces
    508   % therein should become regular spaces in the raw index file, not the
    509   % expansion of \tie (\leavevmode \penalty \@M \ ).
    510   \gdef\unsepspaces{\let =\space}
    511 }
    512 
    513 
    514 \def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
    515 
    516 % Define the framework for environments in texinfo.tex.  It's used like this:
    517 %
    518 %   \envdef\foo{...}
    519 %   \def\Efoo{...}
    520 %
    521 % It's the responsibility of \envdef to insert \begingroup before the
    522 % actual body; @end closes the group after calling \Efoo.  \envdef also
    523 % defines \thisenv, so the current environment is known; @end checks
    524 % whether the environment name matches.  The \checkenv macro can also be
    525 % used to check whether the current environment is the one expected.
    526 %
    527 % Non-false conditionals (@iftex, @ifset) don't fit into this, so they
    528 % are not treated as environments; they don't open a group.  (The
    529 % implementation of @end takes care not to call \endgroup in this
    530 % special case.)
    531 
    532 
    533 % At run-time, environments start with this:
    534 \def\startenvironment#1{\begingroup\def\thisenv{#1}}
    535 % initialize
    536 \let\thisenv\empty
    537 
    538 % ... but they get defined via ``\envdef\foo{...}'':
    539 \long\def\envdef#1#2{\def#1{\startenvironment#1#2}}
    540 \def\envparseargdef#1#2{\parseargdef#1{\startenvironment#1#2}}
    541 
    542 % Check whether we're in the right environment:
    543 \def\checkenv#1{%
    544   \def\temp{#1}%
    545   \ifx\thisenv\temp
    546   \else
    547     \badenverr
    548   \fi
    549 }
    550 
    551 % Environment mismatch, #1 expected:
    552 \def\badenverr{%
    553   \errhelp = \EMsimple
    554   \errmessage{This command can appear only \inenvironment\temp,
    555     not \inenvironment\thisenv}%
    556 }
    557 \def\inenvironment#1{%
    558   \ifx#1\empty
    559     outside of any environment%
    560   \else
    561     in environment \expandafter\string#1%
    562   \fi
    563 }
    564 
    565 % @end foo executes the definition of \Efoo.
    566 % But first, it executes a specialized version of \checkenv
    567 %
    568 \parseargdef\end{%
    569   \if 1\csname iscond.#1\endcsname
    570   \else
    571     % The general wording of \badenverr may not be ideal.
    572     \expandafter\checkenv\csname#1\endcsname
    573     \csname E#1\endcsname
    574     \endgroup
    575   \fi
    576 }
    577 
    578 \newhelp\EMsimple{Press RETURN to continue.}
    579 
    580 
    581 % Be sure we're in horizontal mode when doing a tie, since we make space
    582 % equivalent to this in @example-like environments. Otherwise, a space
    583 % at the beginning of a line will start with \penalty -- and
    584 % since \penalty is valid in vertical mode, we'd end up putting the
    585 % penalty on the vertical list instead of in the new paragraph.
    586 {\catcode`@ = 11
    587  % Avoid using \@M directly, because that causes trouble
    588  % if the definition is written into an index file.
    589  \global\let\tiepenalty = \@M
    590  \gdef\tie{\leavevmode\penalty\tiepenalty\ }
    591 }
    592 
    593 % @: forces normal size whitespace following.
    594 \def\:{\spacefactor=1000 }
    595 
    596 % @* forces a line break.
    597 \def\*{\unskip\hfil\break\hbox{}\ignorespaces}
    598 
    599 % @/ allows a line break.
    600 \let\/=\allowbreak
    601 
    602 % @. is an end-of-sentence period.
    603 \def\.{.\spacefactor=\endofsentencespacefactor\space}
    604 
    605 % @! is an end-of-sentence bang.
    606 \def\!{!\spacefactor=\endofsentencespacefactor\space}
    607 
    608 % @? is an end-of-sentence query.
    609 \def\?{?\spacefactor=\endofsentencespacefactor\space}
    610 
    611 % @frenchspacing on|off  says whether to put extra space after punctuation.
    612 %
    613 \def\onword{on}
    614 \def\offword{off}
    615 %
    616 \parseargdef\frenchspacing{%
    617   \def\temp{#1}%
    618   \ifx\temp\onword \plainfrenchspacing
    619   \else\ifx\temp\offword \plainnonfrenchspacing
    620   \else
    621     \errhelp = \EMsimple
    622     \errmessage{Unknown @frenchspacing option `\temp', must be on|off}%
    623   \fi\fi
    624 }
    625 
    626 % @w prevents a word break.  Without the \leavevmode, @w at the
    627 % beginning of a paragraph, when TeX is still in vertical mode, would
    628 % produce a whole line of output instead of starting the paragraph.
    629 \def\w#1{\leavevmode\hbox{#1}}
    630 
    631 % @group ... @end group forces ... to be all on one page, by enclosing
    632 % it in a TeX vbox.  We use \vtop instead of \vbox to construct the box
    633 % to keep its height that of a normal line.  According to the rules for
    634 % \topskip (p.114 of the TeXbook), the glue inserted is
    635 % max (\topskip - \ht (first item), 0).  If that height is large,
    636 % therefore, no glue is inserted, and the space between the headline and
    637 % the text is small, which looks bad.
    638 %
    639 % Another complication is that the group might be very large.  This can
    640 % cause the glue on the previous page to be unduly stretched, because it
    641 % does not have much material.  In this case, it's better to add an
    642 % explicit \vfill so that the extra space is at the bottom.  The
    643 % threshold for doing this is if the group is more than \vfilllimit
    644 % percent of a page (\vfilllimit can be changed inside of @tex).
    645 %
    646 \newbox\groupbox
    647 \def\vfilllimit{0.7}
    648 %
    649 \envdef\group{%
    650   \ifnum\catcode`\^^M=\active \else
    651     \errhelp = \groupinvalidhelp
    652     \errmessage{@group invalid in context where filling is enabled}%
    653   \fi
    654   \startsavinginserts
    655   %
    656   \setbox\groupbox = \vtop\bgroup
    657     % Do @comment since we are called inside an environment such as
    658     % @example, where each end-of-line in the input causes an
    659     % end-of-line in the output.  We don't want the end-of-line after
    660     % the `@group' to put extra space in the output.  Since @group
    661     % should appear on a line by itself (according to the Texinfo
    662     % manual), we don't worry about eating any user text.
    663     \comment
    664 }
    665 %
    666 % The \vtop produces a box with normal height and large depth; thus, TeX puts
    667 % \baselineskip glue before it, and (when the next line of text is done)
    668 % \lineskip glue after it.  Thus, space below is not quite equal to space
    669 % above.  But it's pretty close.
    670 \def\Egroup{%
    671     % To get correct interline space between the last line of the group
    672     % and the first line afterwards, we have to propagate \prevdepth.
    673     \endgraf % Not \par, as it may have been set to \lisppar.
    674     \global\dimen1 = \prevdepth
    675   \egroup           % End the \vtop.
    676   % \dimen0 is the vertical size of the group's box.
    677   \dimen0 = \ht\groupbox  \advance\dimen0 by \dp\groupbox
    678   % \dimen2 is how much space is left on the page (more or less).
    679   \dimen2 = \pageheight   \advance\dimen2 by -\pagetotal
    680   % if the group doesn't fit on the current page, and it's a big big
    681   % group, force a page break.
    682   \ifdim \dimen0 > \dimen2
    683     \ifdim \pagetotal < \vfilllimit\pageheight
    684       \page
    685     \fi
    686   \fi
    687   \box\groupbox
    688   \prevdepth = \dimen1
    689   \checkinserts
    690 }
    691 %
    692 % TeX puts in an \escapechar (i.e., `@') at the beginning of the help
    693 % message, so this ends up printing `@group can only ...'.
    694 %
    695 \newhelp\groupinvalidhelp{%
    696 group can only be used in environments such as @example,^^J%
    697 where each line of input produces a line of output.}
    698 
    699 % @need space-in-mils
    700 % forces a page break if there is not space-in-mils remaining.
    701 
    702 \newdimen\mil  \mil=0.001in
    703 
    704 \parseargdef\need{%
    705   % Ensure vertical mode, so we don't make a big box in the middle of a
    706   % paragraph.
    707   \par
    708   %
    709   % If the @need value is less than one line space, it's useless.
    710   \dimen0 = #1\mil
    711   \dimen2 = \ht\strutbox
    712   \advance\dimen2 by \dp\strutbox
    713   \ifdim\dimen0 > \dimen2
    714     %
    715     % Do a \strut just to make the height of this box be normal, so the
    716     % normal leading is inserted relative to the preceding line.
    717     % And a page break here is fine.
    718     \vtop to #1\mil{\strut\vfil}%
    719     %
    720     % TeX does not even consider page breaks if a penalty added to the
    721     % main vertical list is 10000 or more.  But in order to see if the
    722     % empty box we just added fits on the page, we must make it consider
    723     % page breaks.  On the other hand, we don't want to actually break the
    724     % page after the empty box.  So we use a penalty of 9999.
    725     %
    726     % There is an extremely small chance that TeX will actually break the
    727     % page at this \penalty, if there are no other feasible breakpoints in
    728     % sight.  (If the user is using lots of big @group commands, which
    729     % almost-but-not-quite fill up a page, TeX will have a hard time doing
    730     % good page breaking, for example.)  However, I could not construct an
    731     % example where a page broke at this \penalty; if it happens in a real
    732     % document, then we can reconsider our strategy.
    733     \penalty9999
    734     %
    735     % Back up by the size of the box, whether we did a page break or not.
    736     \kern -#1\mil
    737     %
    738     % Do not allow a page break right after this kern.
    739     \nobreak
    740   \fi
    741 }
    742 
    743 % @br   forces paragraph break (and is undocumented).
    744 
    745 \let\br = \par
    746 
    747 % @page forces the start of a new page.
    748 %
    749 \def\page{\par\vfill\supereject}
    750 
    751 % @exdent text....
    752 % outputs text on separate line in roman font, starting at standard page margin
    753 
    754 % This records the amount of indent in the innermost environment.
    755 % That's how much \exdent should take out.
    756 \newskip\exdentamount
    757 
    758 % This defn is used inside fill environments such as @defun.
    759 \parseargdef\exdent{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}
    760 
    761 % This defn is used inside nofill environments such as @example.
    762 \parseargdef\nofillexdent{{\advance \leftskip by -\exdentamount
    763   \leftline{\hskip\leftskip{\rm#1}}}}
    764 
    765 % @inmargin{WHICH}{TEXT} puts TEXT in the WHICH margin next to the current
    766 % paragraph.  For more general purposes, use the \margin insertion
    767 % class.  WHICH is `l' or `r'.  Not documented, written for gawk manual.
    768 %
    769 \newskip\inmarginspacing \inmarginspacing=1cm
    770 \def\strutdepth{\dp\strutbox}
    771 %
    772 \def\doinmargin#1#2{\strut\vadjust{%
    773   \nobreak
    774   \kern-\strutdepth
    775   \vtop to \strutdepth{%
    776     \baselineskip=\strutdepth
    777     \vss
    778     % if you have multiple lines of stuff to put here, you'll need to
    779     % make the vbox yourself of the appropriate size.
    780     \ifx#1l%
    781       \llap{\ignorespaces #2\hskip\inmarginspacing}%
    782     \else
    783       \rlap{\hskip\hsize \hskip\inmarginspacing \ignorespaces #2}%
    784     \fi
    785     \null
    786   }%
    787 }}
    788 \def\inleftmargin{\doinmargin l}
    789 \def\inrightmargin{\doinmargin r}
    790 %
    791 % @inmargin{TEXT [, RIGHT-TEXT]}
    792 % (if RIGHT-TEXT is given, use TEXT for left page, RIGHT-TEXT for right;
    793 % else use TEXT for both).
    794 %
    795 \def\inmargin#1{\parseinmargin #1,,\finish}
    796 \def\parseinmargin#1,#2,#3\finish{% not perfect, but better than nothing.
    797   \setbox0 = \hbox{\ignorespaces #2}%
    798   \ifdim\wd0 > 0pt
    799     \def\lefttext{#1}%  have both texts
    800     \def\righttext{#2}%
    801   \else
    802     \def\lefttext{#1}%  have only one text
    803     \def\righttext{#1}%
    804   \fi
    805   %
    806   \ifodd\pageno
    807     \def\temp{\inrightmargin\righttext}% odd page -> outside is right margin
    808   \else
    809     \def\temp{\inleftmargin\lefttext}%
    810   \fi
    811   \temp
    812 }
    813 
    814 % @| inserts a changebar to the left of the current line.  It should
    815 % surround any changed text.  This approach does *not* work if the
    816 % change spans more than two lines of output.  To handle that, we would
    817 % have adopt a much more difficult approach (putting marks into the main
    818 % vertical list for the beginning and end of each change).  This command
    819 % is not documented, not supported, and doesn't work.
    820 %
    821 \def\|{%
    822   % \vadjust can only be used in horizontal mode.
    823   \leavevmode
    824   %
    825   % Append this vertical mode material after the current line in the output.
    826   \vadjust{%
    827     % We want to insert a rule with the height and depth of the current
    828     % leading; that is exactly what \strutbox is supposed to record.
    829     \vskip-\baselineskip
    830     %
    831     % \vadjust-items are inserted at the left edge of the type.  So
    832     % the \llap here moves out into the left-hand margin.
    833     \llap{%
    834       %
    835       % For a thicker or thinner bar, change the `1pt'.
    836       \vrule height\baselineskip width1pt
    837       %
    838       % This is the space between the bar and the text.
    839       \hskip 12pt
    840     }%
    841   }%
    842 }
    843 
    844 % @include FILE -- \input text of FILE.
    845 %
    846 \def\include{\parseargusing\filenamecatcodes\includezzz}
    847 \def\includezzz#1{%
    848   \pushthisfilestack
    849   \def\thisfile{#1}%
    850   {%
    851     \makevalueexpandable  % we want to expand any @value in FILE.
    852     \turnoffactive        % and allow special characters in the expansion
    853     \indexnofonts         % Allow `@@' and other weird things in file names.
    854     \wlog{texinfo.tex: doing @include of #1^^J}%
    855     \edef\temp{\noexpand\input #1 }%
    856     %
    857     % This trickery is to read FILE outside of a group, in case it makes
    858     % definitions, etc.
    859     \expandafter
    860   }\temp
    861   \popthisfilestack
    862 }
    863 \def\filenamecatcodes{%
    864   \catcode`\\=\other
    865   \catcode`~=\other
    866   \catcode`^=\other
    867   \catcode`_=\other
    868   \catcode`|=\other
    869   \catcode`<=\other
    870   \catcode`>=\other
    871   \catcode`+=\other
    872   \catcode`-=\other
    873   \catcode`\`=\other
    874   \catcode`\'=\other
    875 }
    876 
    877 \def\pushthisfilestack{%
    878   \expandafter\pushthisfilestackX\popthisfilestack\StackTerm
    879 }
    880 \def\pushthisfilestackX{%
    881   \expandafter\pushthisfilestackY\thisfile\StackTerm
    882 }
    883 \def\pushthisfilestackY #1\StackTerm #2\StackTerm {%
    884   \gdef\popthisfilestack{\gdef\thisfile{#1}\gdef\popthisfilestack{#2}}%
    885 }
    886 
    887 \def\popthisfilestack{\errthisfilestackempty}
    888 \def\errthisfilestackempty{\errmessage{Internal error:
    889   the stack of filenames is empty.}}
    890 %
    891 \def\thisfile{}
    892 
    893 % @center line
    894 % outputs that line, centered.
    895 %
    896 \parseargdef\center{%
    897   \ifhmode
    898     \let\centersub\centerH
    899   \else
    900     \let\centersub\centerV
    901   \fi
    902   \centersub{\hfil \ignorespaces#1\unskip \hfil}%
    903   \let\centersub\relax % don't let the definition persist, just in case
    904 }
    905 \def\centerH#1{{%
    906   \hfil\break
    907   \advance\hsize by -\leftskip
    908   \advance\hsize by -\rightskip
    909   \line{#1}%
    910   \break
    911 }}
    912 %
    913 \newcount\centerpenalty
    914 \def\centerV#1{%
    915   % The idea here is the same as in \startdefun, \cartouche, etc.: if
    916   % @center is the first thing after a section heading, we need to wipe
    917   % out the negative parskip inserted by \sectionheading, but still
    918   % prevent a page break here.
    919   \centerpenalty = \lastpenalty
    920   \ifnum\centerpenalty>10000 \vskip\parskip \fi
    921   \ifnum\centerpenalty>9999 \penalty\centerpenalty \fi
    922   \line{\kern\leftskip #1\kern\rightskip}%
    923 }
    924 
    925 % @sp n   outputs n lines of vertical space
    926 %
    927 \parseargdef\sp{\vskip #1\baselineskip}
    928 
    929 % @comment ...line which is ignored...
    930 % @c is the same as @comment
    931 % @ignore ... @end ignore  is another way to write a comment
    932 %
    933 \def\comment{\begingroup \catcode`\^^M=\other%
    934 \catcode`\@=\other \catcode`\{=\other \catcode`\}=\other%
    935 \commentxxx}
    936 {\catcode`\^^M=\other \gdef\commentxxx#1^^M{\endgroup}}
    937 %
    938 \let\c=\comment
    939 
    940 % @paragraphindent NCHARS
    941 % We'll use ems for NCHARS, close enough.
    942 % NCHARS can also be the word `asis' or `none'.
    943 % We cannot feasibly implement @paragraphindent asis, though.
    944 %
    945 \def\asisword{asis} % no translation, these are keywords
    946 \def\noneword{none}
    947 %
    948 \parseargdef\paragraphindent{%
    949   \def\temp{#1}%
    950   \ifx\temp\asisword
    951   \else
    952     \ifx\temp\noneword
    953       \defaultparindent = 0pt
    954     \else
    955       \defaultparindent = #1em
    956     \fi
    957   \fi
    958   \parindent = \defaultparindent
    959 }
    960 
    961 % @exampleindent NCHARS
    962 % We'll use ems for NCHARS like @paragraphindent.
    963 % It seems @exampleindent asis isn't necessary, but
    964 % I preserve it to make it similar to @paragraphindent.
    965 \parseargdef\exampleindent{%
    966   \def\temp{#1}%
    967   \ifx\temp\asisword
    968   \else
    969     \ifx\temp\noneword
    970       \lispnarrowing = 0pt
    971     \else
    972       \lispnarrowing = #1em
    973     \fi
    974   \fi
    975 }
    976 
    977 % @firstparagraphindent WORD
    978 % If WORD is `none', then suppress indentation of the first paragraph
    979 % after a section heading.  If WORD is `insert', then do indent at such
    980 % paragraphs.
    981 %
    982 % The paragraph indentation is suppressed or not by calling
    983 % \suppressfirstparagraphindent, which the sectioning commands do.
    984 % We switch the definition of this back and forth according to WORD.
    985 % By default, we suppress indentation.
    986 %
    987 \def\suppressfirstparagraphindent{\dosuppressfirstparagraphindent}
    988 \def\insertword{insert}
    989 %
    990 \parseargdef\firstparagraphindent{%
    991   \def\temp{#1}%
    992   \ifx\temp\noneword
    993     \let\suppressfirstparagraphindent = \dosuppressfirstparagraphindent
    994   \else\ifx\temp\insertword
    995     \let\suppressfirstparagraphindent = \relax
    996   \else
    997     \errhelp = \EMsimple
    998     \errmessage{Unknown @firstparagraphindent option `\temp'}%
    999   \fi\fi
   1000 }
   1001 
   1002 % Here is how we actually suppress indentation.  Redefine \everypar to
   1003 % \kern backwards by \parindent, and then reset itself to empty.
   1004 %
   1005 % We also make \indent itself not actually do anything until the next
   1006 % paragraph.
   1007 %
   1008 \gdef\dosuppressfirstparagraphindent{%
   1009   \gdef\indent{%
   1010     \restorefirstparagraphindent
   1011     \indent
   1012   }%
   1013   \gdef\noindent{%
   1014     \restorefirstparagraphindent
   1015     \noindent
   1016   }%
   1017   \global\everypar = {%
   1018     \kern -\parindent
   1019     \restorefirstparagraphindent
   1020   }%
   1021 }
   1022 
   1023 \gdef\restorefirstparagraphindent{%
   1024   \global \let \indent = \ptexindent
   1025   \global \let \noindent = \ptexnoindent
   1026   \global \everypar = {}%
   1027 }
   1028 
   1029 
   1030 % @refill is a no-op.
   1031 \let\refill=\relax
   1032 
   1033 % If working on a large document in chapters, it is convenient to
   1034 % be able to disable indexing, cross-referencing, and contents, for test runs.
   1035 % This is done with @novalidate (before @setfilename).
   1036 %
   1037 \newif\iflinks \linkstrue % by default we want the aux files.
   1038 \let\novalidate = \linksfalse
   1039 
   1040 % @setfilename is done at the beginning of every texinfo file.
   1041 % So open here the files we need to have open while reading the input.
   1042 % This makes it possible to make a .fmt file for texinfo.
   1043 \def\setfilename{%
   1044    \fixbackslash  % Turn off hack to swallow `\input texinfo'.
   1045    \iflinks
   1046      \tryauxfile
   1047      % Open the new aux file.  TeX will close it automatically at exit.
   1048      \immediate\openout\auxfile=\jobname.aux
   1049    \fi % \openindices needs to do some work in any case.
   1050    \openindices
   1051    \let\setfilename=\comment % Ignore extra @setfilename cmds.
   1052    %
   1053    % If texinfo.cnf is present on the system, read it.
   1054    % Useful for site-wide @afourpaper, etc.
   1055    \openin 1 texinfo.cnf
   1056    \ifeof 1 \else \input texinfo.cnf \fi
   1057    \closein 1
   1058    %
   1059    \comment % Ignore the actual filename.
   1060 }
   1061 
   1062 % Called from \setfilename.
   1063 %
   1064 \def\openindices{%
   1065   \newindex{cp}%
   1066   \newcodeindex{fn}%
   1067   \newcodeindex{vr}%
   1068   \newcodeindex{tp}%
   1069   \newcodeindex{ky}%
   1070   \newcodeindex{pg}%
   1071 }
   1072 
   1073 % @bye.
   1074 \outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
   1075 
   1076 
   1077 \message{pdf,}
   1078 % adobe `portable' document format
   1079 \newcount\tempnum
   1080 \newcount\lnkcount
   1081 \newtoks\filename
   1082 \newcount\filenamelength
   1083 \newcount\pgn
   1084 \newtoks\toksA
   1085 \newtoks\toksB
   1086 \newtoks\toksC
   1087 \newtoks\toksD
   1088 \newbox\boxA
   1089 \newcount\countA
   1090 \newif\ifpdf
   1091 \newif\ifpdfmakepagedest
   1092 
   1093 % when pdftex is run in dvi mode, \pdfoutput is defined (so \pdfoutput=1
   1094 % can be set).  So we test for \relax and 0 as well as being undefined.
   1095 \ifx\pdfoutput\thisisundefined
   1096 \else
   1097   \ifx\pdfoutput\relax
   1098   \else
   1099     \ifcase\pdfoutput
   1100     \else
   1101       \pdftrue
   1102     \fi
   1103   \fi
   1104 \fi
   1105 
   1106 % PDF uses PostScript string constants for the names of xref targets,
   1107 % for display in the outlines, and in other places.  Thus, we have to
   1108 % double any backslashes.  Otherwise, a name like "\node" will be
   1109 % interpreted as a newline (\n), followed by o, d, e.  Not good.
   1110 % 
   1111 % See http://www.ntg.nl/pipermail/ntg-pdftex/2004-July/000654.html and
   1112 % related messages.  The final outcome is that it is up to the TeX user
   1113 % to double the backslashes and otherwise make the string valid, so
   1114 % that's what we do.  pdftex 1.30.0 (ca.2005) introduced a primitive to
   1115 % do this reliably, so we use it.
   1116 
   1117 % #1 is a control sequence in which to do the replacements,
   1118 % which we \xdef.
   1119 \def\txiescapepdf#1{%
   1120   \ifx\pdfescapestring\thisisundefined
   1121     % No primitive available; should we give a warning or log?
   1122     % Many times it won't matter.
   1123   \else
   1124     % The expandable \pdfescapestring primitive escapes parentheses,
   1125     % backslashes, and other special chars.
   1126     \xdef#1{\pdfescapestring{#1}}%
   1127   \fi
   1128 }
   1129 
   1130 \newhelp\nopdfimagehelp{Texinfo supports .png, .jpg, .jpeg, and .pdf images
   1131 with PDF output, and none of those formats could be found.  (.eps cannot
   1132 be supported due to the design of the PDF format; use regular TeX (DVI
   1133 output) for that.)}
   1134 
   1135 \ifpdf
   1136   %
   1137   % Color manipulation macros based on pdfcolor.tex,
   1138   % except using rgb instead of cmyk; the latter is said to render as a
   1139   % very dark gray on-screen and a very dark halftone in print, instead
   1140   % of actual black.
   1141   \def\rgbDarkRed{0.50 0.09 0.12}
   1142   \def\rgbBlack{0 0 0}
   1143   %
   1144   % k sets the color for filling (usual text, etc.);
   1145   % K sets the color for stroking (thin rules, e.g., normal _'s).
   1146   \def\pdfsetcolor#1{\pdfliteral{#1 rg  #1 RG}}
   1147   %
   1148   % Set color, and create a mark which defines \thiscolor accordingly,
   1149   % so that \makeheadline knows which color to restore.
   1150   \def\setcolor#1{%
   1151     \xdef\lastcolordefs{\gdef\noexpand\thiscolor{#1}}%
   1152     \domark
   1153     \pdfsetcolor{#1}%
   1154   }
   1155   %
   1156   \def\maincolor{\rgbBlack}
   1157   \pdfsetcolor{\maincolor}
   1158   \edef\thiscolor{\maincolor}
   1159   \def\lastcolordefs{}
   1160   %
   1161   \def\makefootline{%
   1162     \baselineskip24pt
   1163     \line{\pdfsetcolor{\maincolor}\the\footline}%
   1164   }
   1165   %
   1166   \def\makeheadline{%
   1167     \vbox to 0pt{%
   1168       \vskip-22.5pt
   1169       \line{%
   1170         \vbox to8.5pt{}%
   1171         % Extract \thiscolor definition from the marks.
   1172         \getcolormarks
   1173         % Typeset the headline with \maincolor, then restore the color.
   1174         \pdfsetcolor{\maincolor}\the\headline\pdfsetcolor{\thiscolor}%
   1175       }%
   1176       \vss
   1177     }%
   1178     \nointerlineskip
   1179   }
   1180   %
   1181   %
   1182   \pdfcatalog{/PageMode /UseOutlines}
   1183   %
   1184   % #1 is image name, #2 width (might be empty/whitespace), #3 height (ditto).
   1185   \def\dopdfimage#1#2#3{%
   1186     \def\pdfimagewidth{#2}\setbox0 = \hbox{\ignorespaces #2}%
   1187     \def\pdfimageheight{#3}\setbox2 = \hbox{\ignorespaces #3}%
   1188     %
   1189     % pdftex (and the PDF format) support .pdf, .png, .jpg (among
   1190     % others).  Let's try in that order, PDF first since if
   1191     % someone has a scalable image, presumably better to use that than a
   1192     % bitmap.
   1193     \let\pdfimgext=\empty
   1194     \begingroup
   1195       \openin 1 #1.pdf \ifeof 1
   1196         \openin 1 #1.PDF \ifeof 1
   1197           \openin 1 #1.png \ifeof 1
   1198             \openin 1 #1.jpg \ifeof 1
   1199               \openin 1 #1.jpeg \ifeof 1
   1200                 \openin 1 #1.JPG \ifeof 1
   1201                   \errhelp = \nopdfimagehelp
   1202                   \errmessage{Could not find image file #1 for pdf}%
   1203                 \else \gdef\pdfimgext{JPG}%
   1204                 \fi
   1205               \else \gdef\pdfimgext{jpeg}%
   1206               \fi
   1207             \else \gdef\pdfimgext{jpg}%
   1208             \fi
   1209           \else \gdef\pdfimgext{png}%
   1210           \fi
   1211         \else \gdef\pdfimgext{PDF}%
   1212         \fi
   1213       \else \gdef\pdfimgext{pdf}%
   1214       \fi
   1215       \closein 1
   1216     \endgroup
   1217     %
   1218     % without \immediate, ancient pdftex seg faults when the same image is
   1219     % included twice.  (Version 3.14159-pre-1.0-unofficial-20010704.)
   1220     \ifnum\pdftexversion < 14
   1221       \immediate\pdfimage
   1222     \else
   1223       \immediate\pdfximage
   1224     \fi
   1225       \ifdim \wd0 >0pt width \pdfimagewidth \fi
   1226       \ifdim \wd2 >0pt height \pdfimageheight \fi
   1227       \ifnum\pdftexversion<13
   1228          #1.\pdfimgext
   1229        \else
   1230          {#1.\pdfimgext}%
   1231        \fi
   1232     \ifnum\pdftexversion < 14 \else
   1233       \pdfrefximage \pdflastximage
   1234     \fi}
   1235   %
   1236   \def\pdfmkdest#1{{%
   1237     % We have to set dummies so commands such as @code, and characters
   1238     % such as \, aren't expanded when present in a section title.
   1239     \indexnofonts
   1240     \turnoffactive
   1241     \makevalueexpandable
   1242     \def\pdfdestname{#1}%
   1243     \txiescapepdf\pdfdestname
   1244     \safewhatsit{\pdfdest name{\pdfdestname} xyz}%
   1245   }}
   1246   %
   1247   % used to mark target names; must be expandable.
   1248   \def\pdfmkpgn#1{#1}
   1249   %
   1250   % by default, use a color that is dark enough to print on paper as
   1251   % nearly black, but still distinguishable for online viewing.
   1252   \def\urlcolor{\rgbDarkRed}
   1253   \def\linkcolor{\rgbDarkRed}
   1254   \def\endlink{\setcolor{\maincolor}\pdfendlink}
   1255   %
   1256   % Adding outlines to PDF; macros for calculating structure of outlines
   1257   % come from Petr Olsak
   1258   \def\expnumber#1{\expandafter\ifx\csname#1\endcsname\relax 0%
   1259     \else \csname#1\endcsname \fi}
   1260   \def\advancenumber#1{\tempnum=\expnumber{#1}\relax
   1261     \advance\tempnum by 1
   1262     \expandafter\xdef\csname#1\endcsname{\the\tempnum}}
   1263   %
   1264   % #1 is the section text, which is what will be displayed in the
   1265   % outline by the pdf viewer.  #2 is the pdf expression for the number
   1266   % of subentries (or empty, for subsubsections).  #3 is the node text,
   1267   % which might be empty if this toc entry had no corresponding node.
   1268   % #4 is the page number
   1269   %
   1270   \def\dopdfoutline#1#2#3#4{%
   1271     % Generate a link to the node text if that exists; else, use the
   1272     % page number.  We could generate a destination for the section
   1273     % text in the case where a section has no node, but it doesn't
   1274     % seem worth the trouble, since most documents are normally structured.
   1275     \edef\pdfoutlinedest{#3}%
   1276     \ifx\pdfoutlinedest\empty
   1277       \def\pdfoutlinedest{#4}%
   1278     \else
   1279       \txiescapepdf\pdfoutlinedest
   1280     \fi
   1281     %
   1282     % Also escape PDF chars in the display string.
   1283     \edef\pdfoutlinetext{#1}%
   1284     \txiescapepdf\pdfoutlinetext
   1285     %
   1286     \pdfoutline goto name{\pdfmkpgn{\pdfoutlinedest}}#2{\pdfoutlinetext}%
   1287   }
   1288   %
   1289   \def\pdfmakeoutlines{%
   1290     \begingroup
   1291       % Read toc silently, to get counts of subentries for \pdfoutline.
   1292       \def\partentry##1##2##3##4{}% ignore parts in the outlines
   1293       \def\numchapentry##1##2##3##4{%
   1294 	\def\thischapnum{##2}%
   1295 	\def\thissecnum{0}%
   1296 	\def\thissubsecnum{0}%
   1297       }%
   1298       \def\numsecentry##1##2##3##4{%
   1299 	\advancenumber{chap\thischapnum}%
   1300 	\def\thissecnum{##2}%
   1301 	\def\thissubsecnum{0}%
   1302       }%
   1303       \def\numsubsecentry##1##2##3##4{%
   1304 	\advancenumber{sec\thissecnum}%
   1305 	\def\thissubsecnum{##2}%
   1306       }%
   1307       \def\numsubsubsecentry##1##2##3##4{%
   1308 	\advancenumber{subsec\thissubsecnum}%
   1309       }%
   1310       \def\thischapnum{0}%
   1311       \def\thissecnum{0}%
   1312       \def\thissubsecnum{0}%
   1313       %
   1314       % use \def rather than \let here because we redefine \chapentry et
   1315       % al. a second time, below.
   1316       \def\appentry{\numchapentry}%
   1317       \def\appsecentry{\numsecentry}%
   1318       \def\appsubsecentry{\numsubsecentry}%
   1319       \def\appsubsubsecentry{\numsubsubsecentry}%
   1320       \def\unnchapentry{\numchapentry}%
   1321       \def\unnsecentry{\numsecentry}%
   1322       \def\unnsubsecentry{\numsubsecentry}%
   1323       \def\unnsubsubsecentry{\numsubsubsecentry}%
   1324       \readdatafile{toc}%
   1325       %
   1326       % Read toc second time, this time actually producing the outlines.
   1327       % The `-' means take the \expnumber as the absolute number of
   1328       % subentries, which we calculated on our first read of the .toc above.
   1329       %
   1330       % We use the node names as the destinations.
   1331       \def\numchapentry##1##2##3##4{%
   1332         \dopdfoutline{##1}{count-\expnumber{chap##2}}{##3}{##4}}%
   1333       \def\numsecentry##1##2##3##4{%
   1334         \dopdfoutline{##1}{count-\expnumber{sec##2}}{##3}{##4}}%
   1335       \def\numsubsecentry##1##2##3##4{%
   1336         \dopdfoutline{##1}{count-\expnumber{subsec##2}}{##3}{##4}}%
   1337       \def\numsubsubsecentry##1##2##3##4{% count is always zero
   1338         \dopdfoutline{##1}{}{##3}{##4}}%
   1339       %
   1340       % PDF outlines are displayed using system fonts, instead of
   1341       % document fonts.  Therefore we cannot use special characters,
   1342       % since the encoding is unknown.  For example, the eogonek from
   1343       % Latin 2 (0xea) gets translated to a | character.  Info from
   1344       % Staszek Wawrykiewicz, 19 Jan 2004 04:09:24 +0100.
   1345       %
   1346       % TODO this right, we have to translate 8-bit characters to
   1347       % their "best" equivalent, based on the @documentencoding.  Too
   1348       % much work for too little return.  Just use the ASCII equivalents
   1349       % we use for the index sort strings.
   1350       % 
   1351       \indexnofonts
   1352       \setupdatafile
   1353       % We can have normal brace characters in the PDF outlines, unlike
   1354       % Texinfo index files.  So set that up.
   1355       \def\{{\lbracecharliteral}%
   1356       \def\}{\rbracecharliteral}%
   1357       \catcode`\\=\active \otherbackslash
   1358       \input \tocreadfilename
   1359     \endgroup
   1360   }
   1361   {\catcode`[=1 \catcode`]=2
   1362    \catcode`{=\other \catcode`}=\other
   1363    \gdef\lbracecharliteral[{]%
   1364    \gdef\rbracecharliteral[}]%
   1365   ]
   1366   %
   1367   \def\skipspaces#1{\def\PP{#1}\def\D{|}%
   1368     \ifx\PP\D\let\nextsp\relax
   1369     \else\let\nextsp\skipspaces
   1370       \addtokens{\filename}{\PP}%
   1371       \advance\filenamelength by 1
   1372     \fi
   1373     \nextsp}
   1374   \def\getfilename#1{%
   1375     \filenamelength=0
   1376     % If we don't expand the argument now, \skipspaces will get
   1377     % snagged on things like "@value{foo}".
   1378     \edef\temp{#1}%
   1379     \expandafter\skipspaces\temp|\relax
   1380   }
   1381   \ifnum\pdftexversion < 14
   1382     \let \startlink \pdfannotlink
   1383   \else
   1384     \let \startlink \pdfstartlink
   1385   \fi
   1386   % make a live url in pdf output.
   1387   \def\pdfurl#1{%
   1388     \begingroup
   1389       % it seems we really need yet another set of dummies; have not
   1390       % tried to figure out what each command should do in the context
   1391       % of @url.  for now, just make @/ a no-op, that's the only one
   1392       % people have actually reported a problem with.
   1393       %
   1394       \normalturnoffactive
   1395       \def\@{@}%
   1396       \let\/=\empty
   1397       \makevalueexpandable
   1398       % do we want to go so far as to use \indexnofonts instead of just
   1399       % special-casing \var here?
   1400       \def\var##1{##1}%
   1401       %
   1402       \leavevmode\setcolor{\urlcolor}%
   1403       \startlink attr{/Border [0 0 0]}%
   1404         user{/Subtype /Link /A << /S /URI /URI (#1) >>}%
   1405     \endgroup}
   1406   \def\pdfgettoks#1.{\setbox\boxA=\hbox{\toksA={#1.}\toksB={}\maketoks}}
   1407   \def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks}
   1408   \def\adn#1{\addtokens{\toksC}{#1}\global\countA=1\let\next=\maketoks}
   1409   \def\poptoks#1#2|ENDTOKS|{\let\first=#1\toksD={#1}\toksA={#2}}
   1410   \def\maketoks{%
   1411     \expandafter\poptoks\the\toksA|ENDTOKS|\relax
   1412     \ifx\first0\adn0
   1413     \else\ifx\first1\adn1 \else\ifx\first2\adn2 \else\ifx\first3\adn3
   1414     \else\ifx\first4\adn4 \else\ifx\first5\adn5 \else\ifx\first6\adn6
   1415     \else\ifx\first7\adn7 \else\ifx\first8\adn8 \else\ifx\first9\adn9
   1416     \else
   1417       \ifnum0=\countA\else\makelink\fi
   1418       \ifx\first.\let\next=\done\else
   1419         \let\next=\maketoks
   1420         \addtokens{\toksB}{\the\toksD}
   1421         \ifx\first,\addtokens{\toksB}{\space}\fi
   1422       \fi
   1423     \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
   1424     \next}
   1425   \def\makelink{\addtokens{\toksB}%
   1426     {\noexpand\pdflink{\the\toksC}}\toksC={}\global\countA=0}
   1427   \def\pdflink#1{%
   1428     \startlink attr{/Border [0 0 0]} goto name{\pdfmkpgn{#1}}
   1429     \setcolor{\linkcolor}#1\endlink}
   1430   \def\done{\edef\st{\global\noexpand\toksA={\the\toksB}}\st}
   1431 \else
   1432   % non-pdf mode
   1433   \let\pdfmkdest = \gobble
   1434   \let\pdfurl = \gobble
   1435   \let\endlink = \relax
   1436   \let\setcolor = \gobble
   1437   \let\pdfsetcolor = \gobble
   1438   \let\pdfmakeoutlines = \relax
   1439 \fi  % \ifx\pdfoutput
   1440 
   1441 
   1442 \message{fonts,}
   1443 
   1444 % Change the current font style to #1, remembering it in \curfontstyle.
   1445 % For now, we do not accumulate font styles: @b{@i{foo}} prints foo in
   1446 % italics, not bold italics.
   1447 %
   1448 \def\setfontstyle#1{%
   1449   \def\curfontstyle{#1}% not as a control sequence, because we are \edef'd.
   1450   \csname ten#1\endcsname  % change the current font
   1451 }
   1452 
   1453 % Select #1 fonts with the current style.
   1454 %
   1455 \def\selectfonts#1{\csname #1fonts\endcsname \csname\curfontstyle\endcsname}
   1456 
   1457 \def\rm{\fam=0 \setfontstyle{rm}}
   1458 \def\it{\fam=\itfam \setfontstyle{it}}
   1459 \def\sl{\fam=\slfam \setfontstyle{sl}}
   1460 \def\bf{\fam=\bffam \setfontstyle{bf}}\def\bfstylename{bf}
   1461 \def\tt{\fam=\ttfam \setfontstyle{tt}}
   1462 
   1463 % Unfortunately, we have to override this for titles and the like, since
   1464 % in those cases "rm" is bold.  Sigh.
   1465 \def\rmisbold{\rm\def\curfontstyle{bf}}
   1466 
   1467 % Texinfo sort of supports the sans serif font style, which plain TeX does not.
   1468 % So we set up a \sf.
   1469 \newfam\sffam
   1470 \def\sf{\fam=\sffam \setfontstyle{sf}}
   1471 \let\li = \sf % Sometimes we call it \li, not \sf.
   1472 
   1473 % We don't need math for this font style.
   1474 \def\ttsl{\setfontstyle{ttsl}}
   1475 
   1476 
   1477 % Set the baselineskip to #1, and the lineskip and strut size
   1478 % correspondingly.  There is no deep meaning behind these magic numbers
   1479 % used as factors; they just match (closely enough) what Knuth defined.
   1480 %
   1481 \def\lineskipfactor{.08333}
   1482 \def\strutheightpercent{.70833}
   1483 \def\strutdepthpercent {.29167}
   1484 %
   1485 % can get a sort of poor man's double spacing by redefining this.
   1486 \def\baselinefactor{1}
   1487 %
   1488 \newdimen\textleading
   1489 \def\setleading#1{%
   1490   \dimen0 = #1\relax
   1491   \normalbaselineskip = \baselinefactor\dimen0
   1492   \normallineskip = \lineskipfactor\normalbaselineskip
   1493   \normalbaselines
   1494   \setbox\strutbox =\hbox{%
   1495     \vrule width0pt height\strutheightpercent\baselineskip
   1496                     depth \strutdepthpercent \baselineskip
   1497   }%
   1498 }
   1499 
   1500 % PDF CMaps.  See also LaTeX's t1.cmap.
   1501 %
   1502 % do nothing with this by default.
   1503 \expandafter\let\csname cmapOT1\endcsname\gobble
   1504 \expandafter\let\csname cmapOT1IT\endcsname\gobble
   1505 \expandafter\let\csname cmapOT1TT\endcsname\gobble
   1506 
   1507 % if we are producing pdf, and we have \pdffontattr, then define cmaps.
   1508 % (\pdffontattr was introduced many years ago, but people still run
   1509 % older pdftex's; it's easy to conditionalize, so we do.)
   1510 \ifpdf \ifx\pdffontattr\thisisundefined \else
   1511   \begingroup
   1512     \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
   1513     \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
   1514 %%DocumentNeededResources: ProcSet (CIDInit)
   1515 %%IncludeResource: ProcSet (CIDInit)
   1516 %%BeginResource: CMap (TeX-OT1-0)
   1517 %%Title: (TeX-OT1-0 TeX OT1 0)
   1518 %%Version: 1.000
   1519 %%EndComments
   1520 /CIDInit /ProcSet findresource begin
   1521 12 dict begin
   1522 begincmap
   1523 /CIDSystemInfo
   1524 << /Registry (TeX)
   1525 /Ordering (OT1)
   1526 /Supplement 0
   1527 >> def
   1528 /CMapName /TeX-OT1-0 def
   1529 /CMapType 2 def
   1530 1 begincodespacerange
   1531 <00> <7F>
   1532 endcodespacerange
   1533 8 beginbfrange
   1534 <00> <01> <0393>
   1535 <09> <0A> <03A8>
   1536 <23> <26> <0023>
   1537 <28> <3B> <0028>
   1538 <3F> <5B> <003F>
   1539 <5D> <5E> <005D>
   1540 <61> <7A> <0061>
   1541 <7B> <7C> <2013>
   1542 endbfrange
   1543 40 beginbfchar
   1544 <02> <0398>
   1545 <03> <039B>
   1546 <04> <039E>
   1547 <05> <03A0>
   1548 <06> <03A3>
   1549 <07> <03D2>
   1550 <08> <03A6>
   1551 <0B> <00660066>
   1552 <0C> <00660069>
   1553 <0D> <0066006C>
   1554 <0E> <006600660069>
   1555 <0F> <00660066006C>
   1556 <10> <0131>
   1557 <11> <0237>
   1558 <12> <0060>
   1559 <13> <00B4>
   1560 <14> <02C7>
   1561 <15> <02D8>
   1562 <16> <00AF>
   1563 <17> <02DA>
   1564 <18> <00B8>
   1565 <19> <00DF>
   1566 <1A> <00E6>
   1567 <1B> <0153>
   1568 <1C> <00F8>
   1569 <1D> <00C6>
   1570 <1E> <0152>
   1571 <1F> <00D8>
   1572 <21> <0021>
   1573 <22> <201D>
   1574 <27> <2019>
   1575 <3C> <00A1>
   1576 <3D> <003D>
   1577 <3E> <00BF>
   1578 <5C> <201C>
   1579 <5F> <02D9>
   1580 <60> <2018>
   1581 <7D> <02DD>
   1582 <7E> <007E>
   1583 <7F> <00A8>
   1584 endbfchar
   1585 endcmap
   1586 CMapName currentdict /CMap defineresource pop
   1587 end
   1588 end
   1589 %%EndResource
   1590 %%EOF
   1591     }\endgroup
   1592   \expandafter\edef\csname cmapOT1\endcsname#1{%
   1593     \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
   1594   }%
   1595 %
   1596 % \cmapOT1IT
   1597   \begingroup
   1598     \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
   1599     \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
   1600 %%DocumentNeededResources: ProcSet (CIDInit)
   1601 %%IncludeResource: ProcSet (CIDInit)
   1602 %%BeginResource: CMap (TeX-OT1IT-0)
   1603 %%Title: (TeX-OT1IT-0 TeX OT1IT 0)
   1604 %%Version: 1.000
   1605 %%EndComments
   1606 /CIDInit /ProcSet findresource begin
   1607 12 dict begin
   1608 begincmap
   1609 /CIDSystemInfo
   1610 << /Registry (TeX)
   1611 /Ordering (OT1IT)
   1612 /Supplement 0
   1613 >> def
   1614 /CMapName /TeX-OT1IT-0 def
   1615 /CMapType 2 def
   1616 1 begincodespacerange
   1617 <00> <7F>
   1618 endcodespacerange
   1619 8 beginbfrange
   1620 <00> <01> <0393>
   1621 <09> <0A> <03A8>
   1622 <25> <26> <0025>
   1623 <28> <3B> <0028>
   1624 <3F> <5B> <003F>
   1625 <5D> <5E> <005D>
   1626 <61> <7A> <0061>
   1627 <7B> <7C> <2013>
   1628 endbfrange
   1629 42 beginbfchar
   1630 <02> <0398>
   1631 <03> <039B>
   1632 <04> <039E>
   1633 <05> <03A0>
   1634 <06> <03A3>
   1635 <07> <03D2>
   1636 <08> <03A6>
   1637 <0B> <00660066>
   1638 <0C> <00660069>
   1639 <0D> <0066006C>
   1640 <0E> <006600660069>
   1641 <0F> <00660066006C>
   1642 <10> <0131>
   1643 <11> <0237>
   1644 <12> <0060>
   1645 <13> <00B4>
   1646 <14> <02C7>
   1647 <15> <02D8>
   1648 <16> <00AF>
   1649 <17> <02DA>
   1650 <18> <00B8>
   1651 <19> <00DF>
   1652 <1A> <00E6>
   1653 <1B> <0153>
   1654 <1C> <00F8>
   1655 <1D> <00C6>
   1656 <1E> <0152>
   1657 <1F> <00D8>
   1658 <21> <0021>
   1659 <22> <201D>
   1660 <23> <0023>
   1661 <24> <00A3>
   1662 <27> <2019>
   1663 <3C> <00A1>
   1664 <3D> <003D>
   1665 <3E> <00BF>
   1666 <5C> <201C>
   1667 <5F> <02D9>
   1668 <60> <2018>
   1669 <7D> <02DD>
   1670 <7E> <007E>
   1671 <7F> <00A8>
   1672 endbfchar
   1673 endcmap
   1674 CMapName currentdict /CMap defineresource pop
   1675 end
   1676 end
   1677 %%EndResource
   1678 %%EOF
   1679     }\endgroup
   1680   \expandafter\edef\csname cmapOT1IT\endcsname#1{%
   1681     \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
   1682   }%
   1683 %
   1684 % \cmapOT1TT
   1685   \begingroup
   1686     \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
   1687     \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
   1688 %%DocumentNeededResources: ProcSet (CIDInit)
   1689 %%IncludeResource: ProcSet (CIDInit)
   1690 %%BeginResource: CMap (TeX-OT1TT-0)
   1691 %%Title: (TeX-OT1TT-0 TeX OT1TT 0)
   1692 %%Version: 1.000
   1693 %%EndComments
   1694 /CIDInit /ProcSet findresource begin
   1695 12 dict begin
   1696 begincmap
   1697 /CIDSystemInfo
   1698 << /Registry (TeX)
   1699 /Ordering (OT1TT)
   1700 /Supplement 0
   1701 >> def
   1702 /CMapName /TeX-OT1TT-0 def
   1703 /CMapType 2 def
   1704 1 begincodespacerange
   1705 <00> <7F>
   1706 endcodespacerange
   1707 5 beginbfrange
   1708 <00> <01> <0393>
   1709 <09> <0A> <03A8>
   1710 <21> <26> <0021>
   1711 <28> <5F> <0028>
   1712 <61> <7E> <0061>
   1713 endbfrange
   1714 32 beginbfchar
   1715 <02> <0398>
   1716 <03> <039B>
   1717 <04> <039E>
   1718 <05> <03A0>
   1719 <06> <03A3>
   1720 <07> <03D2>
   1721 <08> <03A6>
   1722 <0B> <2191>
   1723 <0C> <2193>
   1724 <0D> <0027>
   1725 <0E> <00A1>
   1726 <0F> <00BF>
   1727 <10> <0131>
   1728 <11> <0237>
   1729 <12> <0060>
   1730 <13> <00B4>
   1731 <14> <02C7>
   1732 <15> <02D8>
   1733 <16> <00AF>
   1734 <17> <02DA>
   1735 <18> <00B8>
   1736 <19> <00DF>
   1737 <1A> <00E6>
   1738 <1B> <0153>
   1739 <1C> <00F8>
   1740 <1D> <00C6>
   1741 <1E> <0152>
   1742 <1F> <00D8>
   1743 <20> <2423>
   1744 <27> <2019>
   1745 <60> <2018>
   1746 <7F> <00A8>
   1747 endbfchar
   1748 endcmap
   1749 CMapName currentdict /CMap defineresource pop
   1750 end
   1751 end
   1752 %%EndResource
   1753 %%EOF
   1754     }\endgroup
   1755   \expandafter\edef\csname cmapOT1TT\endcsname#1{%
   1756     \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
   1757   }%
   1758 \fi\fi
   1759 
   1760 
   1761 % Set the font macro #1 to the font named \fontprefix#2.
   1762 % #3 is the font's design size, #4 is a scale factor, #5 is the CMap
   1763 % encoding (only OT1, OT1IT and OT1TT are allowed, or empty to omit).
   1764 % Example:
   1765 % #1 = \textrm
   1766 % #2 = \rmshape
   1767 % #3 = 10
   1768 % #4 = \mainmagstep
   1769 % #5 = OT1
   1770 %
   1771 \def\setfont#1#2#3#4#5{%
   1772   \font#1=\fontprefix#2#3 scaled #4
   1773   \csname cmap#5\endcsname#1%
   1774 }
   1775 % This is what gets called when #5 of \setfont is empty.
   1776 \let\cmap\gobble
   1777 %
   1778 % (end of cmaps)
   1779 
   1780 % Use cm as the default font prefix.
   1781 % To specify the font prefix, you must define \fontprefix
   1782 % before you read in texinfo.tex.
   1783 \ifx\fontprefix\thisisundefined
   1784 \def\fontprefix{cm}
   1785 \fi
   1786 % Support font families that don't use the same naming scheme as CM.
   1787 \def\rmshape{r}
   1788 \def\rmbshape{bx}               % where the normal face is bold
   1789 \def\bfshape{b}
   1790 \def\bxshape{bx}
   1791 \def\ttshape{tt}
   1792 \def\ttbshape{tt}
   1793 \def\ttslshape{sltt}
   1794 \def\itshape{ti}
   1795 \def\itbshape{bxti}
   1796 \def\slshape{sl}
   1797 \def\slbshape{bxsl}
   1798 \def\sfshape{ss}
   1799 \def\sfbshape{ss}
   1800 \def\scshape{csc}
   1801 \def\scbshape{csc}
   1802 
   1803 % Definitions for a main text size of 11pt.  (The default in Texinfo.)
   1804 %
   1805 \def\definetextfontsizexi{%
   1806 % Text fonts (11.2pt, magstep1).
   1807 \def\textnominalsize{11pt}
   1808 \edef\mainmagstep{\magstephalf}
   1809 \setfont\textrm\rmshape{10}{\mainmagstep}{OT1}
   1810 \setfont\texttt\ttshape{10}{\mainmagstep}{OT1TT}
   1811 \setfont\textbf\bfshape{10}{\mainmagstep}{OT1}
   1812 \setfont\textit\itshape{10}{\mainmagstep}{OT1IT}
   1813 \setfont\textsl\slshape{10}{\mainmagstep}{OT1}
   1814 \setfont\textsf\sfshape{10}{\mainmagstep}{OT1}
   1815 \setfont\textsc\scshape{10}{\mainmagstep}{OT1}
   1816 \setfont\textttsl\ttslshape{10}{\mainmagstep}{OT1TT}
   1817 \font\texti=cmmi10 scaled \mainmagstep
   1818 \font\textsy=cmsy10 scaled \mainmagstep
   1819 \def\textecsize{1095}
   1820 
   1821 % A few fonts for @defun names and args.
   1822 \setfont\defbf\bfshape{10}{\magstep1}{OT1}
   1823 \setfont\deftt\ttshape{10}{\magstep1}{OT1TT}
   1824 \setfont\defttsl\ttslshape{10}{\magstep1}{OT1TT}
   1825 \def\df{\let\tentt=\deftt \let\tenbf = \defbf \let\tenttsl=\defttsl \bf}
   1826 
   1827 % Fonts for indices, footnotes, small examples (9pt).
   1828 \def\smallnominalsize{9pt}
   1829 \setfont\smallrm\rmshape{9}{1000}{OT1}
   1830 \setfont\smalltt\ttshape{9}{1000}{OT1TT}
   1831 \setfont\smallbf\bfshape{10}{900}{OT1}
   1832 \setfont\smallit\itshape{9}{1000}{OT1IT}
   1833 \setfont\smallsl\slshape{9}{1000}{OT1}
   1834 \setfont\smallsf\sfshape{9}{1000}{OT1}
   1835 \setfont\smallsc\scshape{10}{900}{OT1}
   1836 \setfont\smallttsl\ttslshape{10}{900}{OT1TT}
   1837 \font\smalli=cmmi9
   1838 \font\smallsy=cmsy9
   1839 \def\smallecsize{0900}
   1840 
   1841 % Fonts for small examples (8pt).
   1842 \def\smallernominalsize{8pt}
   1843 \setfont\smallerrm\rmshape{8}{1000}{OT1}
   1844 \setfont\smallertt\ttshape{8}{1000}{OT1TT}
   1845 \setfont\smallerbf\bfshape{10}{800}{OT1}
   1846 \setfont\smallerit\itshape{8}{1000}{OT1IT}
   1847 \setfont\smallersl\slshape{8}{1000}{OT1}
   1848 \setfont\smallersf\sfshape{8}{1000}{OT1}
   1849 \setfont\smallersc\scshape{10}{800}{OT1}
   1850 \setfont\smallerttsl\ttslshape{10}{800}{OT1TT}
   1851 \font\smalleri=cmmi8
   1852 \font\smallersy=cmsy8
   1853 \def\smallerecsize{0800}
   1854 
   1855 % Fonts for title page (20.4pt):
   1856 \def\titlenominalsize{20pt}
   1857 \setfont\titlerm\rmbshape{12}{\magstep3}{OT1}
   1858 \setfont\titleit\itbshape{10}{\magstep4}{OT1IT}
   1859 \setfont\titlesl\slbshape{10}{\magstep4}{OT1}
   1860 \setfont\titlett\ttbshape{12}{\magstep3}{OT1TT}
   1861 \setfont\titlettsl\ttslshape{10}{\magstep4}{OT1TT}
   1862 \setfont\titlesf\sfbshape{17}{\magstep1}{OT1}
   1863 \let\titlebf=\titlerm
   1864 \setfont\titlesc\scbshape{10}{\magstep4}{OT1}
   1865 \font\titlei=cmmi12 scaled \magstep3
   1866 \font\titlesy=cmsy10 scaled \magstep4
   1867 \def\titleecsize{2074}
   1868 
   1869 % Chapter (and unnumbered) fonts (17.28pt).
   1870 \def\chapnominalsize{17pt}
   1871 \setfont\chaprm\rmbshape{12}{\magstep2}{OT1}
   1872 \setfont\chapit\itbshape{10}{\magstep3}{OT1IT}
   1873 \setfont\chapsl\slbshape{10}{\magstep3}{OT1}
   1874 \setfont\chaptt\ttbshape{12}{\magstep2}{OT1TT}
   1875 \setfont\chapttsl\ttslshape{10}{\magstep3}{OT1TT}
   1876 \setfont\chapsf\sfbshape{17}{1000}{OT1}
   1877 \let\chapbf=\chaprm
   1878 \setfont\chapsc\scbshape{10}{\magstep3}{OT1}
   1879 \font\chapi=cmmi12 scaled \magstep2
   1880 \font\chapsy=cmsy10 scaled \magstep3
   1881 \def\chapecsize{1728}
   1882 
   1883 % Section fonts (14.4pt).
   1884 \def\secnominalsize{14pt}
   1885 \setfont\secrm\rmbshape{12}{\magstep1}{OT1}
   1886 \setfont\secit\itbshape{10}{\magstep2}{OT1IT}
   1887 \setfont\secsl\slbshape{10}{\magstep2}{OT1}
   1888 \setfont\sectt\ttbshape{12}{\magstep1}{OT1TT}
   1889 \setfont\secttsl\ttslshape{10}{\magstep2}{OT1TT}
   1890 \setfont\secsf\sfbshape{12}{\magstep1}{OT1}
   1891 \let\secbf\secrm
   1892 \setfont\secsc\scbshape{10}{\magstep2}{OT1}
   1893 \font\seci=cmmi12 scaled \magstep1
   1894 \font\secsy=cmsy10 scaled \magstep2
   1895 \def\sececsize{1440}
   1896 
   1897 % Subsection fonts (13.15pt).
   1898 \def\ssecnominalsize{13pt}
   1899 \setfont\ssecrm\rmbshape{12}{\magstephalf}{OT1}
   1900 \setfont\ssecit\itbshape{10}{1315}{OT1IT}
   1901 \setfont\ssecsl\slbshape{10}{1315}{OT1}
   1902 \setfont\ssectt\ttbshape{12}{\magstephalf}{OT1TT}
   1903 \setfont\ssecttsl\ttslshape{10}{1315}{OT1TT}
   1904 \setfont\ssecsf\sfbshape{12}{\magstephalf}{OT1}
   1905 \let\ssecbf\ssecrm
   1906 \setfont\ssecsc\scbshape{10}{1315}{OT1}
   1907 \font\sseci=cmmi12 scaled \magstephalf
   1908 \font\ssecsy=cmsy10 scaled 1315
   1909 \def\ssececsize{1200}
   1910 
   1911 % Reduced fonts for @acro in text (10pt).
   1912 \def\reducednominalsize{10pt}
   1913 \setfont\reducedrm\rmshape{10}{1000}{OT1}
   1914 \setfont\reducedtt\ttshape{10}{1000}{OT1TT}
   1915 \setfont\reducedbf\bfshape{10}{1000}{OT1}
   1916 \setfont\reducedit\itshape{10}{1000}{OT1IT}
   1917 \setfont\reducedsl\slshape{10}{1000}{OT1}
   1918 \setfont\reducedsf\sfshape{10}{1000}{OT1}
   1919 \setfont\reducedsc\scshape{10}{1000}{OT1}
   1920 \setfont\reducedttsl\ttslshape{10}{1000}{OT1TT}
   1921 \font\reducedi=cmmi10
   1922 \font\reducedsy=cmsy10
   1923 \def\reducedecsize{1000}
   1924 
   1925 \textleading = 13.2pt % line spacing for 11pt CM
   1926 \textfonts            % reset the current fonts
   1927 \rm
   1928 } % end of 11pt text font size definitions, \definetextfontsizexi
   1929 
   1930 
   1931 % Definitions to make the main text be 10pt Computer Modern, with
   1932 % section, chapter, etc., sizes following suit.  This is for the GNU
   1933 % Press printing of the Emacs 22 manual.  Maybe other manuals in the
   1934 % future.  Used with @smallbook, which sets the leading to 12pt.
   1935 %
   1936 \def\definetextfontsizex{%
   1937 % Text fonts (10pt).
   1938 \def\textnominalsize{10pt}
   1939 \edef\mainmagstep{1000}
   1940 \setfont\textrm\rmshape{10}{\mainmagstep}{OT1}
   1941 \setfont\texttt\ttshape{10}{\mainmagstep}{OT1TT}
   1942 \setfont\textbf\bfshape{10}{\mainmagstep}{OT1}
   1943 \setfont\textit\itshape{10}{\mainmagstep}{OT1IT}
   1944 \setfont\textsl\slshape{10}{\mainmagstep}{OT1}
   1945 \setfont\textsf\sfshape{10}{\mainmagstep}{OT1}
   1946 \setfont\textsc\scshape{10}{\mainmagstep}{OT1}
   1947 \setfont\textttsl\ttslshape{10}{\mainmagstep}{OT1TT}
   1948 \font\texti=cmmi10 scaled \mainmagstep
   1949 \font\textsy=cmsy10 scaled \mainmagstep
   1950 \def\textecsize{1000}
   1951 
   1952 % A few fonts for @defun names and args.
   1953 \setfont\defbf\bfshape{10}{\magstephalf}{OT1}
   1954 \setfont\deftt\ttshape{10}{\magstephalf}{OT1TT}
   1955 \setfont\defttsl\ttslshape{10}{\magstephalf}{OT1TT}
   1956 \def\df{\let\tentt=\deftt \let\tenbf = \defbf \let\tenttsl=\defttsl \bf}
   1957 
   1958 % Fonts for indices, footnotes, small examples (9pt).
   1959 \def\smallnominalsize{9pt}
   1960 \setfont\smallrm\rmshape{9}{1000}{OT1}
   1961 \setfont\smalltt\ttshape{9}{1000}{OT1TT}
   1962 \setfont\smallbf\bfshape{10}{900}{OT1}
   1963 \setfont\smallit\itshape{9}{1000}{OT1IT}
   1964 \setfont\smallsl\slshape{9}{1000}{OT1}
   1965 \setfont\smallsf\sfshape{9}{1000}{OT1}
   1966 \setfont\smallsc\scshape{10}{900}{OT1}
   1967 \setfont\smallttsl\ttslshape{10}{900}{OT1TT}
   1968 \font\smalli=cmmi9
   1969 \font\smallsy=cmsy9
   1970 \def\smallecsize{0900}
   1971 
   1972 % Fonts for small examples (8pt).
   1973 \def\smallernominalsize{8pt}
   1974 \setfont\smallerrm\rmshape{8}{1000}{OT1}
   1975 \setfont\smallertt\ttshape{8}{1000}{OT1TT}
   1976 \setfont\smallerbf\bfshape{10}{800}{OT1}
   1977 \setfont\smallerit\itshape{8}{1000}{OT1IT}
   1978 \setfont\smallersl\slshape{8}{1000}{OT1}
   1979 \setfont\smallersf\sfshape{8}{1000}{OT1}
   1980 \setfont\smallersc\scshape{10}{800}{OT1}
   1981 \setfont\smallerttsl\ttslshape{10}{800}{OT1TT}
   1982 \font\smalleri=cmmi8
   1983 \font\smallersy=cmsy8
   1984 \def\smallerecsize{0800}
   1985 
   1986 % Fonts for title page (20.4pt):
   1987 \def\titlenominalsize{20pt}
   1988 \setfont\titlerm\rmbshape{12}{\magstep3}{OT1}
   1989 \setfont\titleit\itbshape{10}{\magstep4}{OT1IT}
   1990 \setfont\titlesl\slbshape{10}{\magstep4}{OT1}
   1991 \setfont\titlett\ttbshape{12}{\magstep3}{OT1TT}
   1992 \setfont\titlettsl\ttslshape{10}{\magstep4}{OT1TT}
   1993 \setfont\titlesf\sfbshape{17}{\magstep1}{OT1}
   1994 \let\titlebf=\titlerm
   1995 \setfont\titlesc\scbshape{10}{\magstep4}{OT1}
   1996 \font\titlei=cmmi12 scaled \magstep3
   1997 \font\titlesy=cmsy10 scaled \magstep4
   1998 \def\titleecsize{2074}
   1999 
   2000 % Chapter fonts (14.4pt).
   2001 \def\chapnominalsize{14pt}
   2002 \setfont\chaprm\rmbshape{12}{\magstep1}{OT1}
   2003 \setfont\chapit\itbshape{10}{\magstep2}{OT1IT}
   2004 \setfont\chapsl\slbshape{10}{\magstep2}{OT1}
   2005 \setfont\chaptt\ttbshape{12}{\magstep1}{OT1TT}
   2006 \setfont\chapttsl\ttslshape{10}{\magstep2}{OT1TT}
   2007 \setfont\chapsf\sfbshape{12}{\magstep1}{OT1}
   2008 \let\chapbf\chaprm
   2009 \setfont\chapsc\scbshape{10}{\magstep2}{OT1}
   2010 \font\chapi=cmmi12 scaled \magstep1
   2011 \font\chapsy=cmsy10 scaled \magstep2
   2012 \def\chapecsize{1440}
   2013 
   2014 % Section fonts (12pt).
   2015 \def\secnominalsize{12pt}
   2016 \setfont\secrm\rmbshape{12}{1000}{OT1}
   2017 \setfont\secit\itbshape{10}{\magstep1}{OT1IT}
   2018 \setfont\secsl\slbshape{10}{\magstep1}{OT1}
   2019 \setfont\sectt\ttbshape{12}{1000}{OT1TT}
   2020 \setfont\secttsl\ttslshape{10}{\magstep1}{OT1TT}
   2021 \setfont\secsf\sfbshape{12}{1000}{OT1}
   2022 \let\secbf\secrm
   2023 \setfont\secsc\scbshape{10}{\magstep1}{OT1}
   2024 \font\seci=cmmi12
   2025 \font\secsy=cmsy10 scaled \magstep1
   2026 \def\sececsize{1200}
   2027 
   2028 % Subsection fonts (10pt).
   2029 \def\ssecnominalsize{10pt}
   2030 \setfont\ssecrm\rmbshape{10}{1000}{OT1}
   2031 \setfont\ssecit\itbshape{10}{1000}{OT1IT}
   2032 \setfont\ssecsl\slbshape{10}{1000}{OT1}
   2033 \setfont\ssectt\ttbshape{10}{1000}{OT1TT}
   2034 \setfont\ssecttsl\ttslshape{10}{1000}{OT1TT}
   2035 \setfont\ssecsf\sfbshape{10}{1000}{OT1}
   2036 \let\ssecbf\ssecrm
   2037 \setfont\ssecsc\scbshape{10}{1000}{OT1}
   2038 \font\sseci=cmmi10
   2039 \font\ssecsy=cmsy10
   2040 \def\ssececsize{1000}
   2041 
   2042 % Reduced fonts for @acro in text (9pt).
   2043 \def\reducednominalsize{9pt}
   2044 \setfont\reducedrm\rmshape{9}{1000}{OT1}
   2045 \setfont\reducedtt\ttshape{9}{1000}{OT1TT}
   2046 \setfont\reducedbf\bfshape{10}{900}{OT1}
   2047 \setfont\reducedit\itshape{9}{1000}{OT1IT}
   2048 \setfont\reducedsl\slshape{9}{1000}{OT1}
   2049 \setfont\reducedsf\sfshape{9}{1000}{OT1}
   2050 \setfont\reducedsc\scshape{10}{900}{OT1}
   2051 \setfont\reducedttsl\ttslshape{10}{900}{OT1TT}
   2052 \font\reducedi=cmmi9
   2053 \font\reducedsy=cmsy9
   2054 \def\reducedecsize{0900}
   2055 
   2056 \divide\parskip by 2  % reduce space between paragraphs
   2057 \textleading = 12pt   % line spacing for 10pt CM
   2058 \textfonts            % reset the current fonts
   2059 \rm
   2060 } % end of 10pt text font size definitions, \definetextfontsizex
   2061 
   2062 
   2063 % We provide the user-level command
   2064 %   @fonttextsize 10
   2065 % (or 11) to redefine the text font size.  pt is assumed.
   2066 %
   2067 \def\xiword{11}
   2068 \def\xword{10}
   2069 \def\xwordpt{10pt}
   2070 %
   2071 \parseargdef\fonttextsize{%
   2072   \def\textsizearg{#1}%
   2073   %\wlog{doing @fonttextsize \textsizearg}%
   2074   %
   2075   % Set \globaldefs so that documents can use this inside @tex, since
   2076   % makeinfo 4.8 does not support it, but we need it nonetheless.
   2077   %
   2078  \begingroup \globaldefs=1
   2079   \ifx\textsizearg\xword \definetextfontsizex
   2080   \else \ifx\textsizearg\xiword \definetextfontsizexi
   2081   \else
   2082     \errhelp=\EMsimple
   2083     \errmessage{@fonttextsize only supports `10' or `11', not `\textsizearg'}
   2084   \fi\fi
   2085  \endgroup
   2086 }
   2087 
   2088 
   2089 % In order for the font changes to affect most math symbols and letters,
   2090 % we have to define the \textfont of the standard families.  Since
   2091 % texinfo doesn't allow for producing subscripts and superscripts except
   2092 % in the main text, we don't bother to reset \scriptfont and
   2093 % \scriptscriptfont (which would also require loading a lot more fonts).
   2094 %
   2095 \def\resetmathfonts{%
   2096   \textfont0=\tenrm \textfont1=\teni \textfont2=\tensy
   2097   \textfont\itfam=\tenit \textfont\slfam=\tensl \textfont\bffam=\tenbf
   2098   \textfont\ttfam=\tentt \textfont\sffam=\tensf
   2099 }
   2100 
   2101 % The font-changing commands redefine the meanings of \tenSTYLE, instead
   2102 % of just \STYLE.  We do this because \STYLE needs to also set the
   2103 % current \fam for math mode.  Our \STYLE (e.g., \rm) commands hardwire
   2104 % \tenSTYLE to set the current font.
   2105 %
   2106 % Each font-changing command also sets the names \lsize (one size lower)
   2107 % and \lllsize (three sizes lower).  These relative commands are used in
   2108 % the LaTeX logo and acronyms.
   2109 %
   2110 % This all needs generalizing, badly.
   2111 %
   2112 \def\textfonts{%
   2113   \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
   2114   \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
   2115   \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy
   2116   \let\tenttsl=\textttsl
   2117   \def\curfontsize{text}%
   2118   \def\lsize{reduced}\def\lllsize{smaller}%
   2119   \resetmathfonts \setleading{\textleading}}
   2120 \def\titlefonts{%
   2121   \let\tenrm=\titlerm \let\tenit=\titleit \let\tensl=\titlesl
   2122   \let\tenbf=\titlebf \let\tentt=\titlett \let\smallcaps=\titlesc
   2123   \let\tensf=\titlesf \let\teni=\titlei \let\tensy=\titlesy
   2124   \let\tenttsl=\titlettsl
   2125   \def\curfontsize{title}%
   2126   \def\lsize{chap}\def\lllsize{subsec}%
   2127   \resetmathfonts \setleading{27pt}}
   2128 \def\titlefont#1{{\titlefonts\rmisbold #1}}
   2129 \def\chapfonts{%
   2130   \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl
   2131   \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
   2132   \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy
   2133   \let\tenttsl=\chapttsl
   2134   \def\curfontsize{chap}%
   2135   \def\lsize{sec}\def\lllsize{text}%
   2136   \resetmathfonts \setleading{19pt}}
   2137 \def\secfonts{%
   2138   \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
   2139   \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
   2140   \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy
   2141   \let\tenttsl=\secttsl
   2142   \def\curfontsize{sec}%
   2143   \def\lsize{subsec}\def\lllsize{reduced}%
   2144   \resetmathfonts \setleading{16pt}}
   2145 \def\subsecfonts{%
   2146   \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
   2147   \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
   2148   \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy
   2149   \let\tenttsl=\ssecttsl
   2150   \def\curfontsize{ssec}%
   2151   \def\lsize{text}\def\lllsize{small}%
   2152   \resetmathfonts \setleading{15pt}}
   2153 \let\subsubsecfonts = \subsecfonts
   2154 \def\reducedfonts{%
   2155   \let\tenrm=\reducedrm \let\tenit=\reducedit \let\tensl=\reducedsl
   2156   \let\tenbf=\reducedbf \let\tentt=\reducedtt \let\reducedcaps=\reducedsc
   2157   \let\tensf=\reducedsf \let\teni=\reducedi \let\tensy=\reducedsy
   2158   \let\tenttsl=\reducedttsl
   2159   \def\curfontsize{reduced}%
   2160   \def\lsize{small}\def\lllsize{smaller}%
   2161   \resetmathfonts \setleading{10.5pt}}
   2162 \def\smallfonts{%
   2163   \let\tenrm=\smallrm \let\tenit=\smallit \let\tensl=\smallsl
   2164   \let\tenbf=\smallbf \let\tentt=\smalltt \let\smallcaps=\smallsc
   2165   \let\tensf=\smallsf \let\teni=\smalli \let\tensy=\smallsy
   2166   \let\tenttsl=\smallttsl
   2167   \def\curfontsize{small}%
   2168   \def\lsize{smaller}\def\lllsize{smaller}%
   2169   \resetmathfonts \setleading{10.5pt}}
   2170 \def\smallerfonts{%
   2171   \let\tenrm=\smallerrm \let\tenit=\smallerit \let\tensl=\smallersl
   2172   \let\tenbf=\smallerbf \let\tentt=\smallertt \let\smallcaps=\smallersc
   2173   \let\tensf=\smallersf \let\teni=\smalleri \let\tensy=\smallersy
   2174   \let\tenttsl=\smallerttsl
   2175   \def\curfontsize{smaller}%
   2176   \def\lsize{smaller}\def\lllsize{smaller}%
   2177   \resetmathfonts \setleading{9.5pt}}
   2178 
   2179 % Fonts for short table of contents.
   2180 \setfont\shortcontrm\rmshape{12}{1000}{OT1}
   2181 \setfont\shortcontbf\bfshape{10}{\magstep1}{OT1}  % no cmb12
   2182 \setfont\shortcontsl\slshape{12}{1000}{OT1}
   2183 \setfont\shortconttt\ttshape{12}{1000}{OT1TT}
   2184 
   2185 % Define these just so they can be easily changed for other fonts.
   2186 \def\angleleft{$\langle$}
   2187 \def\angleright{$\rangle$}
   2188 
   2189 % Set the fonts to use with the @small... environments.
   2190 \let\smallexamplefonts = \smallfonts
   2191 
   2192 % About \smallexamplefonts.  If we use \smallfonts (9pt), @smallexample
   2193 % can fit this many characters:
   2194 %   8.5x11=86   smallbook=72  a4=90  a5=69
   2195 % If we use \scriptfonts (8pt), then we can fit this many characters:
   2196 %   8.5x11=90+  smallbook=80  a4=90+  a5=77
   2197 % For me, subjectively, the few extra characters that fit aren't worth
   2198 % the additional smallness of 8pt.  So I'm making the default 9pt.
   2199 %
   2200 % By the way, for comparison, here's what fits with @example (10pt):
   2201 %   8.5x11=71  smallbook=60  a4=75  a5=58
   2202 % --karl, 24jan03.
   2203 
   2204 % Set up the default fonts, so we can use them for creating boxes.
   2205 %
   2206 \definetextfontsizexi
   2207 
   2208 
   2209 \message{markup,}
   2210 
   2211 % Check if we are currently using a typewriter font.  Since all the
   2212 % Computer Modern typewriter fonts have zero interword stretch (and
   2213 % shrink), and it is reasonable to expect all typewriter fonts to have
   2214 % this property, we can check that font parameter.
   2215 %
   2216 \def\ifmonospace{\ifdim\fontdimen3\font=0pt }
   2217 
   2218 % Markup style infrastructure.  \defmarkupstylesetup\INITMACRO will
   2219 % define and register \INITMACRO to be called on markup style changes.
   2220 % \INITMACRO can check \currentmarkupstyle for the innermost
   2221 % style and the set of \ifmarkupSTYLE switches for all styles
   2222 % currently in effect.
   2223 \newif\ifmarkupvar
   2224 \newif\ifmarkupsamp
   2225 \newif\ifmarkupkey
   2226 %\newif\ifmarkupfile % @file == @samp.
   2227 %\newif\ifmarkupoption % @option == @samp.
   2228 \newif\ifmarkupcode
   2229 \newif\ifmarkupkbd
   2230 %\newif\ifmarkupenv % @env == @code.
   2231 %\newif\ifmarkupcommand % @command == @code.
   2232 \newif\ifmarkuptex % @tex (and part of @math, for now).
   2233 \newif\ifmarkupexample
   2234 \newif\ifmarkupverb
   2235 \newif\ifmarkupverbatim
   2236 
   2237 \let\currentmarkupstyle\empty
   2238 
   2239 \def\setupmarkupstyle#1{%
   2240   \csname markup#1true\endcsname
   2241   \def\currentmarkupstyle{#1}%
   2242   \markupstylesetup
   2243 }
   2244 
   2245 \let\markupstylesetup\empty
   2246 
   2247 \def\defmarkupstylesetup#1{%
   2248   \expandafter\def\expandafter\markupstylesetup
   2249     \expandafter{\markupstylesetup #1}%
   2250   \def#1%
   2251 }
   2252 
   2253 % Markup style setup for left and right quotes.
   2254 \defmarkupstylesetup\markupsetuplq{%
   2255   \expandafter\let\expandafter \temp
   2256     \csname markupsetuplq\currentmarkupstyle\endcsname
   2257   \ifx\temp\relax \markupsetuplqdefault \else \temp \fi
   2258 }
   2259 
   2260 \defmarkupstylesetup\markupsetuprq{%
   2261   \expandafter\let\expandafter \temp
   2262     \csname markupsetuprq\currentmarkupstyle\endcsname
   2263   \ifx\temp\relax \markupsetuprqdefault \else \temp \fi
   2264 }
   2265 
   2266 {
   2267 \catcode`\'=\active
   2268 \catcode`\`=\active
   2269 
   2270 \gdef\markupsetuplqdefault{\let`\lq}
   2271 \gdef\markupsetuprqdefault{\let'\rq}
   2272 
   2273 \gdef\markupsetcodequoteleft{\let`\codequoteleft}
   2274 \gdef\markupsetcodequoteright{\let'\codequoteright}
   2275 }
   2276 
   2277 \let\markupsetuplqcode \markupsetcodequoteleft
   2278 \let\markupsetuprqcode \markupsetcodequoteright
   2279 %
   2280 \let\markupsetuplqexample \markupsetcodequoteleft
   2281 \let\markupsetuprqexample \markupsetcodequoteright
   2282 %
   2283 \let\markupsetuplqkbd     \markupsetcodequoteleft
   2284 \let\markupsetuprqkbd     \markupsetcodequoteright
   2285 %
   2286 \let\markupsetuplqsamp \markupsetcodequoteleft
   2287 \let\markupsetuprqsamp \markupsetcodequoteright
   2288 %
   2289 \let\markupsetuplqverb \markupsetcodequoteleft
   2290 \let\markupsetuprqverb \markupsetcodequoteright
   2291 %
   2292 \let\markupsetuplqverbatim \markupsetcodequoteleft
   2293 \let\markupsetuprqverbatim \markupsetcodequoteright
   2294 
   2295 % Allow an option to not use regular directed right quote/apostrophe
   2296 % (char 0x27), but instead the undirected quote from cmtt (char 0x0d).
   2297 % The undirected quote is ugly, so don't make it the default, but it
   2298 % works for pasting with more pdf viewers (at least evince), the
   2299 % lilypond developers report.  xpdf does work with the regular 0x27.
   2300 %
   2301 \def\codequoteright{%
   2302   \expandafter\ifx\csname SETtxicodequoteundirected\endcsname\relax
   2303     \expandafter\ifx\csname SETcodequoteundirected\endcsname\relax
   2304       '%
   2305     \else \char'15 \fi
   2306   \else \char'15 \fi
   2307 }
   2308 %
   2309 % and a similar option for the left quote char vs. a grave accent.
   2310 % Modern fonts display ASCII 0x60 as a grave accent, so some people like
   2311 % the code environments to do likewise.
   2312 %
   2313 \def\codequoteleft{%
   2314   \expandafter\ifx\csname SETtxicodequotebacktick\endcsname\relax
   2315     \expandafter\ifx\csname SETcodequotebacktick\endcsname\relax
   2316       % [Knuth] pp. 380,381,391
   2317       % \relax disables Spanish ligatures ?` and !` of \tt font.
   2318       \relax`%
   2319     \else \char'22 \fi
   2320   \else \char'22 \fi
   2321 }
   2322 
   2323 % Commands to set the quote options.
   2324 % 
   2325 \parseargdef\codequoteundirected{%
   2326   \def\temp{#1}%
   2327   \ifx\temp\onword
   2328     \expandafter\let\csname SETtxicodequoteundirected\endcsname
   2329       = t%
   2330   \else\ifx\temp\offword
   2331     \expandafter\let\csname SETtxicodequoteundirected\endcsname
   2332       = \relax
   2333   \else
   2334     \errhelp = \EMsimple
   2335     \errmessage{Unknown @codequoteundirected value `\temp', must be on|off}%
   2336   \fi\fi
   2337 }
   2338 %
   2339 \parseargdef\codequotebacktick{%
   2340   \def\temp{#1}%
   2341   \ifx\temp\onword
   2342     \expandafter\let\csname SETtxicodequotebacktick\endcsname
   2343       = t%
   2344   \else\ifx\temp\offword
   2345     \expandafter\let\csname SETtxicodequotebacktick\endcsname
   2346       = \relax
   2347   \else
   2348     \errhelp = \EMsimple
   2349     \errmessage{Unknown @codequotebacktick value `\temp', must be on|off}%
   2350   \fi\fi
   2351 }
   2352 
   2353 % [Knuth] pp. 380,381,391, disable Spanish ligatures ?` and !` of \tt font.
   2354 \def\noligaturesquoteleft{\relax\lq}
   2355 
   2356 % Count depth in font-changes, for error checks
   2357 \newcount\fontdepth \fontdepth=0
   2358 
   2359 % Font commands.
   2360 
   2361 % #1 is the font command (\sl or \it), #2 is the text to slant.
   2362 % If we are in a monospaced environment, however, 1) always use \ttsl,
   2363 % and 2) do not add an italic correction.
   2364 \def\dosmartslant#1#2{%
   2365   \ifusingtt 
   2366     {{\ttsl #2}\let\next=\relax}%
   2367     {\def\next{{#1#2}\futurelet\next\smartitaliccorrection}}%
   2368   \next
   2369 }
   2370 \def\smartslanted{\dosmartslant\sl}
   2371 \def\smartitalic{\dosmartslant\it}
   2372 
   2373 % Output an italic correction unless \next (presumed to be the following
   2374 % character) is such as not to need one.
   2375 \def\smartitaliccorrection{%
   2376   \ifx\next,%
   2377   \else\ifx\next-%
   2378   \else\ifx\next.%
   2379   \else\ptexslash
   2380   \fi\fi\fi
   2381   \aftersmartic
   2382 }
   2383 
   2384 % Unconditional use \ttsl, and no ic.  @var is set to this for defuns.
   2385 \def\ttslanted#1{{\ttsl #1}}
   2386 
   2387 % @cite is like \smartslanted except unconditionally use \sl.  We never want
   2388 % ttsl for book titles, do we?
   2389 \def\cite#1{{\sl #1}\futurelet\next\smartitaliccorrection}
   2390 
   2391 \def\aftersmartic{}
   2392 \def\var#1{%
   2393   \let\saveaftersmartic = \aftersmartic
   2394   \def\aftersmartic{\null\let\aftersmartic=\saveaftersmartic}%
   2395   \smartslanted{#1}%
   2396 }
   2397 
   2398 \let\i=\smartitalic
   2399 \let\slanted=\smartslanted
   2400 \let\dfn=\smartslanted
   2401 \let\emph=\smartitalic
   2402 
   2403 % Explicit font changes: @r, @sc, undocumented @ii.
   2404 \def\r#1{{\rm #1}}              % roman font
   2405 \def\sc#1{{\smallcaps#1}}       % smallcaps font
   2406 \def\ii#1{{\it #1}}             % italic font
   2407 
   2408 % @b, explicit bold.  Also @strong.
   2409 \def\b#1{{\bf #1}}
   2410 \let\strong=\b
   2411 
   2412 % @sansserif, explicit sans.
   2413 \def\sansserif#1{{\sf #1}}
   2414 
   2415 % We can't just use \exhyphenpenalty, because that only has effect at
   2416 % the end of a paragraph.  Restore normal hyphenation at the end of the
   2417 % group within which \nohyphenation is presumably called.
   2418 %
   2419 \def\nohyphenation{\hyphenchar\font = -1  \aftergroup\restorehyphenation}
   2420 \def\restorehyphenation{\hyphenchar\font = `- }
   2421 
   2422 % Set sfcode to normal for the chars that usually have another value.
   2423 % Can't use plain's \frenchspacing because it uses the `\x notation, and
   2424 % sometimes \x has an active definition that messes things up.
   2425 %
   2426 \catcode`@=11
   2427   \def\plainfrenchspacing{%
   2428     \sfcode\dotChar  =\@m \sfcode\questChar=\@m \sfcode\exclamChar=\@m
   2429     \sfcode\colonChar=\@m \sfcode\semiChar =\@m \sfcode\commaChar =\@m
   2430     \def\endofsentencespacefactor{1000}% for @. and friends
   2431   }
   2432   \def\plainnonfrenchspacing{%
   2433     \sfcode`\.3000\sfcode`\?3000\sfcode`\!3000
   2434     \sfcode`\:2000\sfcode`\;1500\sfcode`\,1250
   2435     \def\endofsentencespacefactor{3000}% for @. and friends
   2436   }
   2437 \catcode`@=\other
   2438 \def\endofsentencespacefactor{3000}% default
   2439 
   2440 % @t, explicit typewriter.
   2441 \def\t#1{%
   2442   {\tt \rawbackslash \plainfrenchspacing #1}%
   2443   \null
   2444 }
   2445 
   2446 % @samp.
   2447 \def\samp#1{{\setupmarkupstyle{samp}\lq\tclose{#1}\rq\null}}
   2448 
   2449 % @indicateurl is \samp, that is, with quotes.
   2450 \let\indicateurl=\samp
   2451 
   2452 % @code (and similar) prints in typewriter, but with spaces the same
   2453 % size as normal in the surrounding text, without hyphenation, etc.
   2454 % This is a subroutine for that.
   2455 \def\tclose#1{%
   2456   {%
   2457     % Change normal interword space to be same as for the current font.
   2458     \spaceskip = \fontdimen2\font
   2459     %
   2460     % Switch to typewriter.
   2461     \tt
   2462     %
   2463     % But `\ ' produces the large typewriter interword space.
   2464     \def\ {{\spaceskip = 0pt{} }}%
   2465     %
   2466     % Turn off hyphenation.
   2467     \nohyphenation
   2468     %
   2469     \rawbackslash
   2470     \plainfrenchspacing
   2471     #1%
   2472   }%
   2473   \null % reset spacefactor to 1000
   2474 }
   2475 
   2476 % We *must* turn on hyphenation at `-' and `_' in @code.
   2477 % Otherwise, it is too hard to avoid overfull hboxes
   2478 % in the Emacs manual, the Library manual, etc.
   2479 %
   2480 % Unfortunately, TeX uses one parameter (\hyphenchar) to control
   2481 % both hyphenation at - and hyphenation within words.
   2482 % We must therefore turn them both off (\tclose does that)
   2483 % and arrange explicitly to hyphenate at a dash.
   2484 %  -- rms.
   2485 {
   2486   \catcode`\-=\active \catcode`\_=\active
   2487   \catcode`\'=\active \catcode`\`=\active
   2488   \global\let'=\rq \global\let`=\lq  % default definitions
   2489   %
   2490   \global\def\code{\begingroup
   2491     \setupmarkupstyle{code}%
   2492     % The following should really be moved into \setupmarkupstyle handlers.
   2493     \catcode\dashChar=\active  \catcode\underChar=\active
   2494     \ifallowcodebreaks
   2495      \let-\codedash
   2496      \let_\codeunder
   2497     \else
   2498      \let-\realdash
   2499      \let_\realunder
   2500     \fi
   2501     \codex
   2502   }
   2503 }
   2504 
   2505 \def\codex #1{\tclose{#1}\endgroup}
   2506 
   2507 \def\realdash{-}
   2508 \def\codedash{-\discretionary{}{}{}}
   2509 \def\codeunder{%
   2510   % this is all so @math{@code{var_name}+1} can work.  In math mode, _
   2511   % is "active" (mathcode"8000) and \normalunderscore (or \char95, etc.)
   2512   % will therefore expand the active definition of _, which is us
   2513   % (inside @code that is), therefore an endless loop.
   2514   \ifusingtt{\ifmmode
   2515                \mathchar"075F % class 0=ordinary, family 7=ttfam, pos 0x5F=_.
   2516              \else\normalunderscore \fi
   2517              \discretionary{}{}{}}%
   2518             {\_}%
   2519 }
   2520 
   2521 % An additional complication: the above will allow breaks after, e.g.,
   2522 % each of the four underscores in __typeof__.  This is undesirable in
   2523 % some manuals, especially if they don't have long identifiers in
   2524 % general.  @allowcodebreaks provides a way to control this.
   2525 %
   2526 \newif\ifallowcodebreaks  \allowcodebreakstrue
   2527 
   2528 \def\keywordtrue{true}
   2529 \def\keywordfalse{false}
   2530 
   2531 \parseargdef\allowcodebreaks{%
   2532   \def\txiarg{#1}%
   2533   \ifx\txiarg\keywordtrue
   2534     \allowcodebreakstrue
   2535   \else\ifx\txiarg\keywordfalse
   2536     \allowcodebreaksfalse
   2537   \else
   2538     \errhelp = \EMsimple
   2539     \errmessage{Unknown @allowcodebreaks option `\txiarg', must be true|false}%
   2540   \fi\fi
   2541 }
   2542 
   2543 % For @command, @env, @file, @option quotes seem unnecessary,
   2544 % so use \code rather than \samp.
   2545 \let\command=\code
   2546 \let\env=\code
   2547 \let\file=\code
   2548 \let\option=\code
   2549 
   2550 % @uref (abbreviation for `urlref') takes an optional (comma-separated)
   2551 % second argument specifying the text to display and an optional third
   2552 % arg as text to display instead of (rather than in addition to) the url
   2553 % itself.  First (mandatory) arg is the url.
   2554 % (This \urefnobreak definition isn't used now, leaving it for a while
   2555 % for comparison.)
   2556 \def\urefnobreak#1{\dourefnobreak #1,,,\finish}
   2557 \def\dourefnobreak#1,#2,#3,#4\finish{\begingroup
   2558   \unsepspaces
   2559   \pdfurl{#1}%
   2560   \setbox0 = \hbox{\ignorespaces #3}%
   2561   \ifdim\wd0 > 0pt
   2562     \unhbox0 % third arg given, show only that
   2563   \else
   2564     \setbox0 = \hbox{\ignorespaces #2}%
   2565     \ifdim\wd0 > 0pt
   2566       \ifpdf
   2567         \unhbox0             % PDF: 2nd arg given, show only it
   2568       \else
   2569         \unhbox0\ (\code{#1})% DVI: 2nd arg given, show both it and url
   2570       \fi
   2571     \else
   2572       \code{#1}% only url given, so show it
   2573     \fi
   2574   \fi
   2575   \endlink
   2576 \endgroup}
   2577 
   2578 % This \urefbreak definition is the active one.
   2579 \def\urefbreak{\begingroup \urefcatcodes \dourefbreak}
   2580 \let\uref=\urefbreak
   2581 \def\dourefbreak#1{\urefbreakfinish #1,,,\finish}
   2582 \def\urefbreakfinish#1,#2,#3,#4\finish{% doesn't work in @example
   2583   \unsepspaces
   2584   \pdfurl{#1}%
   2585   \setbox0 = \hbox{\ignorespaces #3}%
   2586   \ifdim\wd0 > 0pt
   2587     \unhbox0 % third arg given, show only that
   2588   \else
   2589     \setbox0 = \hbox{\ignorespaces #2}%
   2590     \ifdim\wd0 > 0pt
   2591       \ifpdf
   2592         \unhbox0             % PDF: 2nd arg given, show only it
   2593       \else
   2594         \unhbox0\ (\urefcode{#1})% DVI: 2nd arg given, show both it and url
   2595       \fi
   2596     \else
   2597       \urefcode{#1}% only url given, so show it
   2598     \fi
   2599   \fi
   2600   \endlink
   2601 \endgroup}
   2602 
   2603 % Allow line breaks around only a few characters (only).
   2604 \def\urefcatcodes{%
   2605   \catcode\ampChar=\active   \catcode\dotChar=\active
   2606   \catcode\hashChar=\active  \catcode\questChar=\active
   2607   \catcode\slashChar=\active
   2608 }
   2609 {
   2610   \urefcatcodes
   2611   %
   2612   \global\def\urefcode{\begingroup
   2613     \setupmarkupstyle{code}%
   2614     \urefcatcodes
   2615     \let&\urefcodeamp
   2616     \let.\urefcodedot
   2617     \let#\urefcodehash
   2618     \let?\urefcodequest
   2619     \let/\urefcodeslash
   2620     \codex
   2621   }
   2622   %
   2623   % By default, they are just regular characters.
   2624   \global\def&{\normalamp}
   2625   \global\def.{\normaldot}
   2626   \global\def#{\normalhash}
   2627   \global\def?{\normalquest}
   2628   \global\def/{\normalslash}
   2629 }
   2630 
   2631 % we put a little stretch before and after the breakable chars, to help
   2632 % line breaking of long url's.  The unequal skips make look better in
   2633 % cmtt at least, especially for dots.
   2634 \def\urefprestretch{\urefprebreak \hskip0pt plus.13em }
   2635 \def\urefpoststretch{\urefpostbreak \hskip0pt plus.1em }
   2636 %
   2637 \def\urefcodeamp{\urefprestretch \&\urefpoststretch}
   2638 \def\urefcodedot{\urefprestretch .\urefpoststretch}
   2639 \def\urefcodehash{\urefprestretch \#\urefpoststretch}
   2640 \def\urefcodequest{\urefprestretch ?\urefpoststretch}
   2641 \def\urefcodeslash{\futurelet\next\urefcodeslashfinish}
   2642 {
   2643   \catcode`\/=\active
   2644   \global\def\urefcodeslashfinish{%
   2645     \urefprestretch \slashChar
   2646     % Allow line break only after the final / in a sequence of
   2647     % slashes, to avoid line break between the slashes in http://.
   2648     \ifx\next/\else \urefpoststretch \fi
   2649   }
   2650 }
   2651 
   2652 % One more complication: by default we'll break after the special
   2653 % characters, but some people like to break before the special chars, so
   2654 % allow that.  Also allow no breaking at all, for manual control.
   2655 % 
   2656 \parseargdef\urefbreakstyle{%
   2657   \def\txiarg{#1}%
   2658   \ifx\txiarg\wordnone
   2659     \def\urefprebreak{\nobreak}\def\urefpostbreak{\nobreak}
   2660   \else\ifx\txiarg\wordbefore
   2661     \def\urefprebreak{\allowbreak}\def\urefpostbreak{\nobreak}
   2662   \else\ifx\txiarg\wordafter
   2663     \def\urefprebreak{\nobreak}\def\urefpostbreak{\allowbreak}
   2664   \else
   2665     \errhelp = \EMsimple
   2666     \errmessage{Unknown @urefbreakstyle setting `\txiarg'}%
   2667   \fi\fi\fi
   2668 }
   2669 \def\wordafter{after}
   2670 \def\wordbefore{before}
   2671 \def\wordnone{none}
   2672 
   2673 \urefbreakstyle after
   2674 
   2675 % @url synonym for @uref, since that's how everyone uses it.
   2676 %
   2677 \let\url=\uref
   2678 
   2679 % rms does not like angle brackets --karl, 17may97.
   2680 % So now @email is just like @uref, unless we are pdf.
   2681 %
   2682 %\def\email#1{\angleleft{\tt #1}\angleright}
   2683 \ifpdf
   2684   \def\email#1{\doemail#1,,\finish}
   2685   \def\doemail#1,#2,#3\finish{\begingroup
   2686     \unsepspaces
   2687     \pdfurl{mailto:#1}%
   2688     \setbox0 = \hbox{\ignorespaces #2}%
   2689     \ifdim\wd0>0pt\unhbox0\else\code{#1}\fi
   2690     \endlink
   2691   \endgroup}
   2692 \else
   2693   \let\email=\uref
   2694 \fi
   2695 
   2696 % @kbdinputstyle -- arg is `distinct' (@kbd uses slanted tty font always),
   2697 %   `example' (@kbd uses ttsl only inside of @example and friends),
   2698 %   or `code' (@kbd uses normal tty font always).
   2699 \parseargdef\kbdinputstyle{%
   2700   \def\txiarg{#1}%
   2701   \ifx\txiarg\worddistinct
   2702     \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}%
   2703   \else\ifx\txiarg\wordexample
   2704     \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\tt}%
   2705   \else\ifx\txiarg\wordcode
   2706     \gdef\kbdexamplefont{\tt}\gdef\kbdfont{\tt}%
   2707   \else
   2708     \errhelp = \EMsimple
   2709     \errmessage{Unknown @kbdinputstyle setting `\txiarg'}%
   2710   \fi\fi\fi
   2711 }
   2712 \def\worddistinct{distinct}
   2713 \def\wordexample{example}
   2714 \def\wordcode{code}
   2715 
   2716 % Default is `distinct'.
   2717 \kbdinputstyle distinct
   2718 
   2719 % @kbd is like @code, except that if the argument is just one @key command,
   2720 % then @kbd has no effect.
   2721 \def\kbd#1{{\def\look{#1}\expandafter\kbdsub\look??\par}}
   2722 
   2723 \def\xkey{\key}
   2724 \def\kbdsub#1#2#3\par{%
   2725   \def\one{#1}\def\three{#3}\def\threex{??}%
   2726   \ifx\one\xkey\ifx\threex\three \key{#2}%
   2727   \else{\tclose{\kbdfont\setupmarkupstyle{kbd}\look}}\fi
   2728   \else{\tclose{\kbdfont\setupmarkupstyle{kbd}\look}}\fi
   2729 }
   2730 
   2731 % definition of @key that produces a lozenge.  Doesn't adjust to text size.
   2732 %\setfont\keyrm\rmshape{8}{1000}{OT1}
   2733 %\font\keysy=cmsy9
   2734 %\def\key#1{{\keyrm\textfont2=\keysy \leavevmode\hbox{%
   2735 %  \raise0.4pt\hbox{\angleleft}\kern-.08em\vtop{%
   2736 %    \vbox{\hrule\kern-0.4pt
   2737 %     \hbox{\raise0.4pt\hbox{\vphantom{\angleleft}}#1}}%
   2738 %    \kern-0.4pt\hrule}%
   2739 %  \kern-.06em\raise0.4pt\hbox{\angleright}}}}
   2740 
   2741 % definition of @key with no lozenge.  If the current font is already
   2742 % monospace, don't change it; that way, we respect @kbdinputstyle.  But
   2743 % if it isn't monospace, then use \tt.
   2744 %
   2745 \def\key#1{{\setupmarkupstyle{key}%
   2746   \nohyphenation
   2747   \ifmonospace\else\tt\fi
   2748   #1}\null}
   2749 
   2750 % @clicksequence{File @click{} Open ...}
   2751 \def\clicksequence#1{\begingroup #1\endgroup}
   2752 
   2753 % @clickstyle @arrow   (by default)
   2754 \parseargdef\clickstyle{\def\click{#1}}
   2755 \def\click{\arrow}
   2756 
   2757 % Typeset a dimension, e.g., `in' or `pt'.  The only reason for the
   2758 % argument is to make the input look right: @dmn{pt} instead of @dmn{}pt.
   2759 %
   2760 \def\dmn#1{\thinspace #1}
   2761 
   2762 % @l was never documented to mean ``switch to the Lisp font'',
   2763 % and it is not used as such in any manual I can find.  We need it for
   2764 % Polish suppressed-l.  --karl, 22sep96.
   2765 %\def\l#1{{\li #1}\null}
   2766 
   2767 % @acronym for "FBI", "NATO", and the like.
   2768 % We print this one point size smaller, since it's intended for
   2769 % all-uppercase.
   2770 %
   2771 \def\acronym#1{\doacronym #1,,\finish}
   2772 \def\doacronym#1,#2,#3\finish{%
   2773   {\selectfonts\lsize #1}%
   2774   \def\temp{#2}%
   2775   \ifx\temp\empty \else
   2776     \space ({\unsepspaces \ignorespaces \temp \unskip})%
   2777   \fi
   2778   \null % reset \spacefactor=1000
   2779 }
   2780 
   2781 % @abbr for "Comput. J." and the like.
   2782 % No font change, but don't do end-of-sentence spacing.
   2783 %
   2784 \def\abbr#1{\doabbr #1,,\finish}
   2785 \def\doabbr#1,#2,#3\finish{%
   2786   {\plainfrenchspacing #1}%
   2787   \def\temp{#2}%
   2788   \ifx\temp\empty \else
   2789     \space ({\unsepspaces \ignorespaces \temp \unskip})%
   2790   \fi
   2791   \null % reset \spacefactor=1000
   2792 }
   2793 
   2794 % @asis just yields its argument.  Used with @table, for example.
   2795 %
   2796 \def\asis#1{#1}
   2797 
   2798 % @math outputs its argument in math mode.
   2799 %
   2800 % One complication: _ usually means subscripts, but it could also mean
   2801 % an actual _ character, as in @math{@var{some_variable} + 1}.  So make
   2802 % _ active, and distinguish by seeing if the current family is \slfam,
   2803 % which is what @var uses.
   2804 {
   2805   \catcode`\_ = \active
   2806   \gdef\mathunderscore{%
   2807     \catcode`\_=\active
   2808     \def_{\ifnum\fam=\slfam \_\else\sb\fi}%
   2809   }
   2810 }
   2811 % Another complication: we want \\ (and @\) to output a math (or tt) \.
   2812 % FYI, plain.tex uses \\ as a temporary control sequence (for no
   2813 % particular reason), but this is not advertised and we don't care.
   2814 %
   2815 % The \mathchar is class=0=ordinary, family=7=ttfam, position=5C=\.
   2816 \def\mathbackslash{\ifnum\fam=\ttfam \mathchar"075C \else\backslash \fi}
   2817 %
   2818 \def\math{%
   2819   \tex
   2820   \mathunderscore
   2821   \let\\ = \mathbackslash
   2822   \mathactive
   2823   % make the texinfo accent commands work in math mode
   2824   \let\"=\ddot
   2825   \let\'=\acute
   2826   \let\==\bar
   2827   \let\^=\hat
   2828   \let\`=\grave
   2829   \let\u=\breve
   2830   \let\v=\check
   2831   \let\~=\tilde
   2832   \let\dotaccent=\dot
   2833   $\finishmath
   2834 }
   2835 \def\finishmath#1{#1$\endgroup}  % Close the group opened by \tex.
   2836 
   2837 % Some active characters (such as <) are spaced differently in math.
   2838 % We have to reset their definitions in case the @math was an argument
   2839 % to a command which sets the catcodes (such as @item or @section).
   2840 %
   2841 {
   2842   \catcode`^ = \active
   2843   \catcode`< = \active
   2844   \catcode`> = \active
   2845   \catcode`+ = \active
   2846   \catcode`' = \active
   2847   \gdef\mathactive{%
   2848     \let^ = \ptexhat
   2849     \let< = \ptexless
   2850     \let> = \ptexgtr
   2851     \let+ = \ptexplus
   2852     \let' = \ptexquoteright
   2853   }
   2854 }
   2855 
   2856 % ctrl is no longer a Texinfo command, but leave this definition for fun.
   2857 \def\ctrl #1{{\tt \rawbackslash \hat}#1}
   2858 
   2859 % @inlinefmt{FMTNAME,PROCESSED-TEXT} and @inlineraw{FMTNAME,RAW-TEXT}.
   2860 % Ignore unless FMTNAME == tex; then it is like @iftex and @tex,
   2861 % except specified as a normal braced arg, so no newlines to worry about.
   2862 % 
   2863 \def\outfmtnametex{tex}
   2864 %
   2865 \long\def\inlinefmt#1{\doinlinefmt #1,\finish}
   2866 \long\def\doinlinefmt#1,#2,\finish{%
   2867   \def\inlinefmtname{#1}%
   2868   \ifx\inlinefmtname\outfmtnametex \ignorespaces #2\fi
   2869 }
   2870 % For raw, must switch into @tex before parsing the argument, to avoid
   2871 % setting catcodes prematurely.  Doing it this way means that, for
   2872 % example, @inlineraw{html, foo{bar} gets a parse error instead of being
   2873 % ignored.  But this isn't important because if people want a literal
   2874 % *right* brace they would have to use a command anyway, so they may as
   2875 % well use a command to get a left brace too.  We could re-use the
   2876 % delimiter character idea from \verb, but it seems like overkill.
   2877 % 
   2878 \long\def\inlineraw{\tex \doinlineraw}
   2879 \long\def\doinlineraw#1{\doinlinerawtwo #1,\finish}
   2880 \def\doinlinerawtwo#1,#2,\finish{%
   2881   \def\inlinerawname{#1}%
   2882   \ifx\inlinerawname\outfmtnametex \ignorespaces #2\fi
   2883   \endgroup % close group opened by \tex.
   2884 }
   2885 
   2886 
   2887 \message{glyphs,}
   2888 % and logos.
   2889 
   2890 % @@ prints an @, as does @atchar{}.
   2891 \def\@{\char64 }
   2892 \let\atchar=\@
   2893 
   2894 % @{ @} @lbracechar{} @rbracechar{} all generate brace characters.
   2895 % Unless we're in typewriter, use \ecfont because the CM text fonts do
   2896 % not have braces, and we don't want to switch into math.
   2897 \def\mylbrace{{\ifmonospace\else\ecfont\fi \char123}}
   2898 \def\myrbrace{{\ifmonospace\else\ecfont\fi \char125}}
   2899 \let\{=\mylbrace \let\lbracechar=\{
   2900 \let\}=\myrbrace \let\rbracechar=\}
   2901 \begingroup
   2902   % Definitions to produce \{ and \} commands for indices,
   2903   % and @{ and @} for the aux/toc files.
   2904   \catcode`\{ = \other \catcode`\} = \other
   2905   \catcode`\[ = 1 \catcode`\] = 2
   2906   \catcode`\! = 0 \catcode`\\ = \other
   2907   !gdef!lbracecmd[\{]%
   2908   !gdef!rbracecmd[\}]%
   2909   !gdef!lbraceatcmd[@{]%
   2910   !gdef!rbraceatcmd[@}]%
   2911 !endgroup
   2912 
   2913 % @comma{} to avoid , parsing problems.
   2914 \let\comma = ,
   2915 
   2916 % Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent
   2917 % Others are defined by plain TeX: @` @' @" @^ @~ @= @u @v @H.
   2918 \let\, = \ptexc
   2919 \let\dotaccent = \ptexdot
   2920 \def\ringaccent#1{{\accent23 #1}}
   2921 \let\tieaccent = \ptext
   2922 \let\ubaraccent = \ptexb
   2923 \let\udotaccent = \d
   2924 
   2925 % Other special characters: @questiondown @exclamdown @ordf @ordm
   2926 % Plain TeX defines: @AA @AE @O @OE @L (plus lowercase versions) @ss.
   2927 \def\questiondown{?`}
   2928 \def\exclamdown{!`}
   2929 \def\ordf{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{a}}}
   2930 \def\ordm{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{o}}}
   2931 
   2932 % Dotless i and dotless j, used for accents.
   2933 \def\imacro{i}
   2934 \def\jmacro{j}
   2935 \def\dotless#1{%
   2936   \def\temp{#1}%
   2937   \ifx\temp\imacro \ifmmode\imath \else\ptexi \fi
   2938   \else\ifx\temp\jmacro \ifmmode\jmath \else\j \fi
   2939   \else \errmessage{@dotless can be used only with i or j}%
   2940   \fi\fi
   2941 }
   2942 
   2943 % The \TeX{} logo, as in plain, but resetting the spacing so that a
   2944 % period following counts as ending a sentence.  (Idea found in latex.)
   2945 %
   2946 \edef\TeX{\TeX \spacefactor=1000 }
   2947 
   2948 % @LaTeX{} logo.  Not quite the same results as the definition in
   2949 % latex.ltx, since we use a different font for the raised A; it's most
   2950 % convenient for us to use an explicitly smaller font, rather than using
   2951 % the \scriptstyle font (since we don't reset \scriptstyle and
   2952 % \scriptscriptstyle).
   2953 %
   2954 \def\LaTeX{%
   2955   L\kern-.36em
   2956   {\setbox0=\hbox{T}%
   2957    \vbox to \ht0{\hbox{%
   2958      \ifx\textnominalsize\xwordpt
   2959        % for 10pt running text, \lllsize (8pt) is too small for the A in LaTeX.
   2960        % Revert to plain's \scriptsize, which is 7pt.
   2961        \count255=\the\fam $\fam\count255 \scriptstyle A$%
   2962      \else
   2963        % For 11pt, we can use our lllsize.
   2964        \selectfonts\lllsize A%
   2965      \fi
   2966      }%
   2967      \vss
   2968   }}%
   2969   \kern-.15em
   2970   \TeX
   2971 }
   2972 
   2973 % Some math mode symbols.
   2974 \def\bullet{$\ptexbullet$}
   2975 \def\geq{\ifmmode \ge\else $\ge$\fi}
   2976 \def\leq{\ifmmode \le\else $\le$\fi}
   2977 \def\minus{\ifmmode -\else $-$\fi}
   2978 
   2979 % @dots{} outputs an ellipsis using the current font.
   2980 % We do .5em per period so that it has the same spacing in the cm
   2981 % typewriter fonts as three actual period characters; on the other hand,
   2982 % in other typewriter fonts three periods are wider than 1.5em.  So do
   2983 % whichever is larger.
   2984 %
   2985 \def\dots{%
   2986   \leavevmode
   2987   \setbox0=\hbox{...}% get width of three periods
   2988   \ifdim\wd0 > 1.5em
   2989     \dimen0 = \wd0
   2990   \else
   2991     \dimen0 = 1.5em
   2992   \fi
   2993   \hbox to \dimen0{%
   2994     \hskip 0pt plus.25fil
   2995     .\hskip 0pt plus1fil
   2996     .\hskip 0pt plus1fil
   2997     .\hskip 0pt plus.5fil
   2998   }%
   2999 }
   3000 
   3001 % @enddots{} is an end-of-sentence ellipsis.
   3002 %
   3003 \def\enddots{%
   3004   \dots
   3005   \spacefactor=\endofsentencespacefactor
   3006 }
   3007 
   3008 % @point{}, @result{}, @expansion{}, @print{}, @equiv{}.
   3009 %
   3010 % Since these characters are used in examples, they should be an even number of
   3011 % \tt widths. Each \tt character is 1en, so two makes it 1em.
   3012 %
   3013 \def\point{$\star$}
   3014 \def\arrow{\leavevmode\raise.05ex\hbox to 1em{\hfil$\rightarrow$\hfil}}
   3015 \def\result{\leavevmode\raise.05ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
   3016 \def\expansion{\leavevmode\hbox to 1em{\hfil$\mapsto$\hfil}}
   3017 \def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
   3018 \def\equiv{\leavevmode\hbox to 1em{\hfil$\ptexequiv$\hfil}}
   3019 
   3020 % The @error{} command.
   3021 % Adapted from the TeXbook's \boxit.
   3022 %
   3023 \newbox\errorbox
   3024 %
   3025 {\tentt \global\dimen0 = 3em}% Width of the box.
   3026 \dimen2 = .55pt % Thickness of rules
   3027 % The text. (`r' is open on the right, `e' somewhat less so on the left.)
   3028 \setbox0 = \hbox{\kern-.75pt \reducedsf \putworderror\kern-1.5pt}
   3029 %
   3030 \setbox\errorbox=\hbox to \dimen0{\hfil
   3031    \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
   3032    \advance\hsize by -2\dimen2 % Rules.
   3033    \vbox{%
   3034       \hrule height\dimen2
   3035       \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text.
   3036          \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
   3037          \kern3pt\vrule width\dimen2}% Space to right.
   3038       \hrule height\dimen2}
   3039     \hfil}
   3040 %
   3041 \def\error{\leavevmode\lower.7ex\copy\errorbox}
   3042 
   3043 % @pounds{} is a sterling sign, which Knuth put in the CM italic font.
   3044 %
   3045 \def\pounds{{\it\$}}
   3046 
   3047 % @euro{} comes from a separate font, depending on the current style.
   3048 % We use the free feym* fonts from the eurosym package by Henrik
   3049 % Theiling, which support regular, slanted, bold and bold slanted (and
   3050 % "outlined" (blackboard board, sort of) versions, which we don't need).
   3051 % It is available from http://www.ctan.org/tex-archive/fonts/eurosym.
   3052 %
   3053 % Although only regular is the truly official Euro symbol, we ignore
   3054 % that.  The Euro is designed to be slightly taller than the regular
   3055 % font height.
   3056 %
   3057 % feymr - regular
   3058 % feymo - slanted
   3059 % feybr - bold
   3060 % feybo - bold slanted
   3061 %
   3062 % There is no good (free) typewriter version, to my knowledge.
   3063 % A feymr10 euro is ~7.3pt wide, while a normal cmtt10 char is ~5.25pt wide.
   3064 % Hmm.
   3065 %
   3066 % Also doesn't work in math.  Do we need to do math with euro symbols?
   3067 % Hope not.
   3068 %
   3069 %
   3070 \def\euro{{\eurofont e}}
   3071 \def\eurofont{%
   3072   % We set the font at each command, rather than predefining it in
   3073   % \textfonts and the other font-switching commands, so that
   3074   % installations which never need the symbol don't have to have the
   3075   % font installed.
   3076   %
   3077   % There is only one designed size (nominal 10pt), so we always scale
   3078   % that to the current nominal size.
   3079   %
   3080   % By the way, simply using "at 1em" works for cmr10 and the like, but
   3081   % does not work for cmbx10 and other extended/shrunken fonts.
   3082   %
   3083   \def\eurosize{\csname\curfontsize nominalsize\endcsname}%
   3084   %
   3085   \ifx\curfontstyle\bfstylename
   3086     % bold:
   3087     \font\thiseurofont = \ifusingit{feybo10}{feybr10} at \eurosize
   3088   \else
   3089     % regular:
   3090     \font\thiseurofont = \ifusingit{feymo10}{feymr10} at \eurosize
   3091   \fi
   3092   \thiseurofont
   3093 }
   3094 
   3095 % Glyphs from the EC fonts.  We don't use \let for the aliases, because
   3096 % sometimes we redefine the original macro, and the alias should reflect
   3097 % the redefinition.
   3098 %
   3099 % Use LaTeX names for the Icelandic letters.
   3100 \def\DH{{\ecfont \char"D0}} % Eth
   3101 \def\dh{{\ecfont \char"F0}} % eth
   3102 \def\TH{{\ecfont \char"DE}} % Thorn
   3103 \def\th{{\ecfont \char"FE}} % thorn
   3104 %
   3105 \def\guillemetleft{{\ecfont \char"13}}
   3106 \def\guillemotleft{\guillemetleft}
   3107 \def\guillemetright{{\ecfont \char"14}}
   3108 \def\guillemotright{\guillemetright}
   3109 \def\guilsinglleft{{\ecfont \char"0E}}
   3110 \def\guilsinglright{{\ecfont \char"0F}}
   3111 \def\quotedblbase{{\ecfont \char"12}}
   3112 \def\quotesinglbase{{\ecfont \char"0D}}
   3113 %
   3114 % This positioning is not perfect (see the ogonek LaTeX package), but
   3115 % we have the precomposed glyphs for the most common cases.  We put the
   3116 % tests to use those glyphs in the single \ogonek macro so we have fewer
   3117 % dummy definitions to worry about for index entries, etc.
   3118 %
   3119 % ogonek is also used with other letters in Lithuanian (IOU), but using
   3120 % the precomposed glyphs for those is not so easy since they aren't in
   3121 % the same EC font.
   3122 \def\ogonek#1{{%
   3123   \def\temp{#1}%
   3124   \ifx\temp\macrocharA\Aogonek
   3125   \else\ifx\temp\macrochara\aogonek
   3126   \else\ifx\temp\macrocharE\Eogonek
   3127   \else\ifx\temp\macrochare\eogonek
   3128   \else
   3129     \ecfont \setbox0=\hbox{#1}%
   3130     \ifdim\ht0=1ex\accent"0C #1%
   3131     \else\ooalign{\unhbox0\crcr\hidewidth\char"0C \hidewidth}%
   3132     \fi
   3133   \fi\fi\fi\fi
   3134   }%
   3135 }
   3136 \def\Aogonek{{\ecfont \char"81}}\def\macrocharA{A}
   3137 \def\aogonek{{\ecfont \char"A1}}\def\macrochara{a}
   3138 \def\Eogonek{{\ecfont \char"86}}\def\macrocharE{E}
   3139 \def\eogonek{{\ecfont \char"A6}}\def\macrochare{e}
   3140 %
   3141 % Use the ec* fonts (cm-super in outline format) for non-CM glyphs.
   3142 \def\ecfont{%
   3143   % We can't distinguish serif/sans and italic/slanted, but this
   3144   % is used for crude hacks anyway (like adding French and German
   3145   % quotes to documents typeset with CM, where we lose kerning), so
   3146   % hopefully nobody will notice/care.
   3147   \edef\ecsize{\csname\curfontsize ecsize\endcsname}%
   3148   \edef\nominalsize{\csname\curfontsize nominalsize\endcsname}%
   3149   \ifmonospace
   3150     % typewriter:
   3151     \font\thisecfont = ectt\ecsize \space at \nominalsize
   3152   \else
   3153     \ifx\curfontstyle\bfstylename
   3154       % bold:
   3155       \font\thisecfont = ecb\ifusingit{i}{x}\ecsize \space at \nominalsize
   3156     \else
   3157       % regular:
   3158       \font\thisecfont = ec\ifusingit{ti}{rm}\ecsize \space at \nominalsize
   3159     \fi
   3160   \fi
   3161   \thisecfont
   3162 }
   3163 
   3164 % @registeredsymbol - R in a circle.  The font for the R should really
   3165 % be smaller yet, but lllsize is the best we can do for now.
   3166 % Adapted from the plain.tex definition of \copyright.
   3167 %
   3168 \def\registeredsymbol{%
   3169   $^{{\ooalign{\hfil\raise.07ex\hbox{\selectfonts\lllsize R}%
   3170                \hfil\crcr\Orb}}%
   3171     }$%
   3172 }
   3173 
   3174 % @textdegree - the normal degrees sign.
   3175 %
   3176 \def\textdegree{$^\circ$}
   3177 
   3178 % Laurent Siebenmann reports \Orb undefined with:
   3179 %  Textures 1.7.7 (preloaded format=plain 93.10.14)  (68K)  16 APR 2004 02:38
   3180 % so we'll define it if necessary.
   3181 %
   3182 \ifx\Orb\thisisundefined
   3183 \def\Orb{\mathhexbox20D}
   3184 \fi
   3185 
   3186 % Quotes.
   3187 \chardef\quotedblleft="5C
   3188 \chardef\quotedblright=`\"
   3189 \chardef\quoteleft=`\`
   3190 \chardef\quoteright=`\'
   3191 
   3192 
   3193 \message{page headings,}
   3194 
   3195 \newskip\titlepagetopglue \titlepagetopglue = 1.5in
   3196 \newskip\titlepagebottomglue \titlepagebottomglue = 2pc
   3197 
   3198 % First the title page.  Must do @settitle before @titlepage.
   3199 \newif\ifseenauthor
   3200 \newif\iffinishedtitlepage
   3201 
   3202 % Do an implicit @contents or @shortcontents after @end titlepage if the
   3203 % user says @setcontentsaftertitlepage or @setshortcontentsaftertitlepage.
   3204 %
   3205 \newif\ifsetcontentsaftertitlepage
   3206  \let\setcontentsaftertitlepage = \setcontentsaftertitlepagetrue
   3207 \newif\ifsetshortcontentsaftertitlepage
   3208  \let\setshortcontentsaftertitlepage = \setshortcontentsaftertitlepagetrue
   3209 
   3210 \parseargdef\shorttitlepage{%
   3211   \begingroup \hbox{}\vskip 1.5in \chaprm \centerline{#1}%
   3212   \endgroup\page\hbox{}\page}
   3213 
   3214 \envdef\titlepage{%
   3215   % Open one extra group, as we want to close it in the middle of \Etitlepage.
   3216   \begingroup
   3217     \parindent=0pt \textfonts
   3218     % Leave some space at the very top of the page.
   3219     \vglue\titlepagetopglue
   3220     % No rule at page bottom unless we print one at the top with @title.
   3221     \finishedtitlepagetrue
   3222     %
   3223     % Most title ``pages'' are actually two pages long, with space
   3224     % at the top of the second.  We don't want the ragged left on the second.
   3225     \let\oldpage = \page
   3226     \def\page{%
   3227       \iffinishedtitlepage\else
   3228 	 \finishtitlepage
   3229       \fi
   3230       \let\page = \oldpage
   3231       \page
   3232       \null
   3233     }%
   3234 }
   3235 
   3236 \def\Etitlepage{%
   3237     \iffinishedtitlepage\else
   3238 	\finishtitlepage
   3239     \fi
   3240     % It is important to do the page break before ending the group,
   3241     % because the headline and footline are only empty inside the group.
   3242     % If we use the new definition of \page, we always get a blank page
   3243     % after the title page, which we certainly don't want.
   3244     \oldpage
   3245   \endgroup
   3246   %
   3247   % Need this before the \...aftertitlepage checks so that if they are
   3248   % in effect the toc pages will come out with page numbers.
   3249   \HEADINGSon
   3250   %
   3251   % If they want short, they certainly want long too.
   3252   \ifsetshortcontentsaftertitlepage
   3253     \shortcontents
   3254     \contents
   3255     \global\let\shortcontents = \relax
   3256     \global\let\contents = \relax
   3257   \fi
   3258   %
   3259   \ifsetcontentsaftertitlepage
   3260     \contents
   3261     \global\let\contents = \relax
   3262     \global\let\shortcontents = \relax
   3263   \fi
   3264 }
   3265 
   3266 \def\finishtitlepage{%
   3267   \vskip4pt \hrule height 2pt width \hsize
   3268   \vskip\titlepagebottomglue
   3269   \finishedtitlepagetrue
   3270 }
   3271 
   3272 % Settings used for typesetting titles: no hyphenation, no indentation,
   3273 % don't worry much about spacing, ragged right.  This should be used
   3274 % inside a \vbox, and fonts need to be set appropriately first.  Because
   3275 % it is always used for titles, nothing else, we call \rmisbold.  \par
   3276 % should be specified before the end of the \vbox, since a vbox is a group.
   3277 % 
   3278 \def\raggedtitlesettings{%
   3279   \rmisbold
   3280   \hyphenpenalty=10000
   3281   \parindent=0pt
   3282   \tolerance=5000
   3283   \ptexraggedright
   3284 }
   3285 
   3286 % Macros to be used within @titlepage:
   3287 
   3288 \let\subtitlerm=\tenrm
   3289 \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}
   3290 
   3291 \parseargdef\title{%
   3292   \checkenv\titlepage
   3293   \vbox{\titlefonts \raggedtitlesettings #1\par}%
   3294   % print a rule at the page bottom also.
   3295   \finishedtitlepagefalse
   3296   \vskip4pt \hrule height 4pt width \hsize \vskip4pt
   3297 }
   3298 
   3299 \parseargdef\subtitle{%
   3300   \checkenv\titlepage
   3301   {\subtitlefont \rightline{#1}}%
   3302 }
   3303 
   3304 % @author should come last, but may come many times.
   3305 % It can also be used inside @quotation.
   3306 %
   3307 \parseargdef\author{%
   3308   \def\temp{\quotation}%
   3309   \ifx\thisenv\temp
   3310     \def\quotationauthor{#1}% printed in \Equotation.
   3311   \else
   3312     \checkenv\titlepage
   3313     \ifseenauthor\else \vskip 0pt plus 1filll \seenauthortrue \fi
   3314     {\secfonts\rmisbold \leftline{#1}}%
   3315   \fi
   3316 }
   3317 
   3318 
   3319 % Set up page headings and footings.
   3320 
   3321 \let\thispage=\folio
   3322 
   3323 \newtoks\evenheadline    % headline on even pages
   3324 \newtoks\oddheadline     % headline on odd pages
   3325 \newtoks\evenfootline    % footline on even pages
   3326 \newtoks\oddfootline     % footline on odd pages
   3327 
   3328 % Now make TeX use those variables
   3329 \headline={{\textfonts\rm \ifodd\pageno \the\oddheadline
   3330                             \else \the\evenheadline \fi}}
   3331 \footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
   3332                             \else \the\evenfootline \fi}\HEADINGShook}
   3333 \let\HEADINGShook=\relax
   3334 
   3335 % Commands to set those variables.
   3336 % For example, this is what  @headings on  does
   3337 % @evenheading @thistitle|@thispage|@thischapter
   3338 % @oddheading @thischapter|@thispage|@thistitle
   3339 % @evenfooting @thisfile||
   3340 % @oddfooting ||@thisfile
   3341 
   3342 
   3343 \def\evenheading{\parsearg\evenheadingxxx}
   3344 \def\evenheadingxxx #1{\evenheadingyyy #1\|\|\|\|\finish}
   3345 \def\evenheadingyyy #1\|#2\|#3\|#4\finish{%
   3346 \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
   3347 
   3348 \def\oddheading{\parsearg\oddheadingxxx}
   3349 \def\oddheadingxxx #1{\oddheadingyyy #1\|\|\|\|\finish}
   3350 \def\oddheadingyyy #1\|#2\|#3\|#4\finish{%
   3351 \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
   3352 
   3353 \parseargdef\everyheading{\oddheadingxxx{#1}\evenheadingxxx{#1}}%
   3354 
   3355 \def\evenfooting{\parsearg\evenfootingxxx}
   3356 \def\evenfootingxxx #1{\evenfootingyyy #1\|\|\|\|\finish}
   3357 \def\evenfootingyyy #1\|#2\|#3\|#4\finish{%
   3358 \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
   3359 
   3360 \def\oddfooting{\parsearg\oddfootingxxx}
   3361 \def\oddfootingxxx #1{\oddfootingyyy #1\|\|\|\|\finish}
   3362 \def\oddfootingyyy #1\|#2\|#3\|#4\finish{%
   3363   \global\oddfootline = {\rlap{\centerline{#2}}\line{#1\hfil#3}}%
   3364   %
   3365   % Leave some space for the footline.  Hopefully ok to assume
   3366   % @evenfooting will not be used by itself.
   3367   \global\advance\pageheight by -12pt
   3368   \global\advance\vsize by -12pt
   3369 }
   3370 
   3371 \parseargdef\everyfooting{\oddfootingxxx{#1}\evenfootingxxx{#1}}
   3372 
   3373 % @evenheadingmarks top     \thischapter <- chapter at the top of a page
   3374 % @evenheadingmarks bottom  \thischapter <- chapter at the bottom of a page
   3375 %
   3376 % The same set of arguments for:
   3377 %
   3378 % @oddheadingmarks
   3379 % @evenfootingmarks
   3380 % @oddfootingmarks
   3381 % @everyheadingmarks
   3382 % @everyfootingmarks
   3383 
   3384 \def\evenheadingmarks{\headingmarks{even}{heading}}
   3385 \def\oddheadingmarks{\headingmarks{odd}{heading}}
   3386 \def\evenfootingmarks{\headingmarks{even}{footing}}
   3387 \def\oddfootingmarks{\headingmarks{odd}{footing}}
   3388 \def\everyheadingmarks#1 {\headingmarks{even}{heading}{#1}
   3389                           \headingmarks{odd}{heading}{#1} }
   3390 \def\everyfootingmarks#1 {\headingmarks{even}{footing}{#1}
   3391                           \headingmarks{odd}{footing}{#1} }
   3392 % #1 = even/odd, #2 = heading/footing, #3 = top/bottom.
   3393 \def\headingmarks#1#2#3 {%
   3394   \expandafter\let\expandafter\temp \csname get#3headingmarks\endcsname
   3395   \global\expandafter\let\csname get#1#2marks\endcsname \temp
   3396 }
   3397 
   3398 \everyheadingmarks bottom
   3399 \everyfootingmarks bottom
   3400 
   3401 % @headings double      turns headings on for double-sided printing.
   3402 % @headings single      turns headings on for single-sided printing.
   3403 % @headings off         turns them off.
   3404 % @headings on          same as @headings double, retained for compatibility.
   3405 % @headings after       turns on double-sided headings after this page.
   3406 % @headings doubleafter turns on double-sided headings after this page.
   3407 % @headings singleafter turns on single-sided headings after this page.
   3408 % By default, they are off at the start of a document,
   3409 % and turned `on' after @end titlepage.
   3410 
   3411 \def\headings #1 {\csname HEADINGS#1\endcsname}
   3412 
   3413 \def\headingsoff{% non-global headings elimination
   3414   \evenheadline={\hfil}\evenfootline={\hfil}%
   3415    \oddheadline={\hfil}\oddfootline={\hfil}%
   3416 }
   3417 
   3418 \def\HEADINGSoff{{\globaldefs=1 \headingsoff}} % global setting
   3419 \HEADINGSoff  % it's the default
   3420 
   3421 % When we turn headings on, set the page number to 1.
   3422 % For double-sided printing, put current file name in lower left corner,
   3423 % chapter name on inside top of right hand pages, document
   3424 % title on inside top of left hand pages, and page numbers on outside top
   3425 % edge of all pages.
   3426 \def\HEADINGSdouble{%
   3427 \global\pageno=1
   3428 \global\evenfootline={\hfil}
   3429 \global\oddfootline={\hfil}
   3430 \global\evenheadline={\line{\folio\hfil\thistitle}}
   3431 \global\oddheadline={\line{\thischapter\hfil\folio}}
   3432 \global\let\contentsalignmacro = \chapoddpage
   3433 }
   3434 \let\contentsalignmacro = \chappager
   3435 
   3436 % For single-sided printing, chapter title goes across top left of page,
   3437 % page number on top right.
   3438 \def\HEADINGSsingle{%
   3439 \global\pageno=1
   3440 \global\evenfootline={\hfil}
   3441 \global\oddfootline={\hfil}
   3442 \global\evenheadline={\line{\thischapter\hfil\folio}}
   3443 \global\oddheadline={\line{\thischapter\hfil\folio}}
   3444 \global\let\contentsalignmacro = \chappager
   3445 }
   3446 \def\HEADINGSon{\HEADINGSdouble}
   3447 
   3448 \def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
   3449 \let\HEADINGSdoubleafter=\HEADINGSafter
   3450 \def\HEADINGSdoublex{%
   3451 \global\evenfootline={\hfil}
   3452 \global\oddfootline={\hfil}
   3453 \global\evenheadline={\line{\folio\hfil\thistitle}}
   3454 \global\oddheadline={\line{\thischapter\hfil\folio}}
   3455 \global\let\contentsalignmacro = \chapoddpage
   3456 }
   3457 
   3458 \def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
   3459 \def\HEADINGSsinglex{%
   3460 \global\evenfootline={\hfil}
   3461 \global\oddfootline={\hfil}
   3462 \global\evenheadline={\line{\thischapter\hfil\folio}}
   3463 \global\oddheadline={\line{\thischapter\hfil\folio}}
   3464 \global\let\contentsalignmacro = \chappager
   3465 }
   3466 
   3467 % Subroutines used in generating headings
   3468 % This produces Day Month Year style of output.
   3469 % Only define if not already defined, in case a txi-??.tex file has set
   3470 % up a different format (e.g., txi-cs.tex does this).
   3471 \ifx\today\thisisundefined
   3472 \def\today{%
   3473   \number\day\space
   3474   \ifcase\month
   3475   \or\putwordMJan\or\putwordMFeb\or\putwordMMar\or\putwordMApr
   3476   \or\putwordMMay\or\putwordMJun\or\putwordMJul\or\putwordMAug
   3477   \or\putwordMSep\or\putwordMOct\or\putwordMNov\or\putwordMDec
   3478   \fi
   3479   \space\number\year}
   3480 \fi
   3481 
   3482 % @settitle line...  specifies the title of the document, for headings.
   3483 % It generates no output of its own.
   3484 \def\thistitle{\putwordNoTitle}
   3485 \def\settitle{\parsearg{\gdef\thistitle}}
   3486 
   3487 
   3488 \message{tables,}
   3489 % Tables -- @table, @ftable, @vtable, @item(x).
   3490 
   3491 % default indentation of table text
   3492 \newdimen\tableindent \tableindent=.8in
   3493 % default indentation of @itemize and @enumerate text
   3494 \newdimen\itemindent  \itemindent=.3in
   3495 % margin between end of table item and start of table text.
   3496 \newdimen\itemmargin  \itemmargin=.1in
   3497 
   3498 % used internally for \itemindent minus \itemmargin
   3499 \newdimen\itemmax
   3500 
   3501 % Note @table, @ftable, and @vtable define @item, @itemx, etc., with
   3502 % these defs.
   3503 % They also define \itemindex
   3504 % to index the item name in whatever manner is desired (perhaps none).
   3505 
   3506 \newif\ifitemxneedsnegativevskip
   3507 
   3508 \def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi}
   3509 
   3510 \def\internalBitem{\smallbreak \parsearg\itemzzz}
   3511 \def\internalBitemx{\itemxpar \parsearg\itemzzz}
   3512 
   3513 \def\itemzzz #1{\begingroup %
   3514   \advance\hsize by -\rightskip
   3515   \advance\hsize by -\tableindent
   3516   \setbox0=\hbox{\itemindicate{#1}}%
   3517   \itemindex{#1}%
   3518   \nobreak % This prevents a break before @itemx.
   3519   %
   3520   % If the item text does not fit in the space we have, put it on a line
   3521   % by itself, and do not allow a page break either before or after that
   3522   % line.  We do not start a paragraph here because then if the next
   3523   % command is, e.g., @kindex, the whatsit would get put into the
   3524   % horizontal list on a line by itself, resulting in extra blank space.
   3525   \ifdim \wd0>\itemmax
   3526     %
   3527     % Make this a paragraph so we get the \parskip glue and wrapping,
   3528     % but leave it ragged-right.
   3529     \begingroup
   3530       \advance\leftskip by-\tableindent
   3531       \advance\hsize by\tableindent
   3532       \advance\rightskip by0pt plus1fil\relax
   3533       \leavevmode\unhbox0\par
   3534     \endgroup
   3535     %
   3536     % We're going to be starting a paragraph, but we don't want the
   3537     % \parskip glue -- logically it's part of the @item we just started.
   3538     \nobreak \vskip-\parskip
   3539     %
   3540     % Stop a page break at the \parskip glue coming up.  However, if
   3541     % what follows is an environment such as @example, there will be no
   3542     % \parskip glue; then the negative vskip we just inserted would
   3543     % cause the example and the item to crash together.  So we use this
   3544     % bizarre value of 10001 as a signal to \aboveenvbreak to insert
   3545     % \parskip glue after all.  Section titles are handled this way also.
   3546     %
   3547     \penalty 10001
   3548     \endgroup
   3549     \itemxneedsnegativevskipfalse
   3550   \else
   3551     % The item text fits into the space.  Start a paragraph, so that the
   3552     % following text (if any) will end up on the same line.
   3553     \noindent
   3554     % Do this with kerns and \unhbox so that if there is a footnote in
   3555     % the item text, it can migrate to the main vertical list and
   3556     % eventually be printed.
   3557     \nobreak\kern-\tableindent
   3558     \dimen0 = \itemmax  \advance\dimen0 by \itemmargin \advance\dimen0 by -\wd0
   3559     \unhbox0
   3560     \nobreak\kern\dimen0
   3561     \endgroup
   3562     \itemxneedsnegativevskiptrue
   3563   \fi
   3564 }
   3565 
   3566 \def\item{\errmessage{@item while not in a list environment}}
   3567 \def\itemx{\errmessage{@itemx while not in a list environment}}
   3568 
   3569 % @table, @ftable, @vtable.
   3570 \envdef\table{%
   3571   \let\itemindex\gobble
   3572   \tablecheck{table}%
   3573 }
   3574 \envdef\ftable{%
   3575   \def\itemindex ##1{\doind {fn}{\code{##1}}}%
   3576   \tablecheck{ftable}%
   3577 }
   3578 \envdef\vtable{%
   3579   \def\itemindex ##1{\doind {vr}{\code{##1}}}%
   3580   \tablecheck{vtable}%
   3581 }
   3582 \def\tablecheck#1{%
   3583   \ifnum \the\catcode`\^^M=\active
   3584     \endgroup
   3585     \errmessage{This command won't work in this context; perhaps the problem is
   3586       that we are \inenvironment\thisenv}%
   3587     \def\next{\doignore{#1}}%
   3588   \else
   3589     \let\next\tablex
   3590   \fi
   3591   \next
   3592 }
   3593 \def\tablex#1{%
   3594   \def\itemindicate{#1}%
   3595   \parsearg\tabley
   3596 }
   3597 \def\tabley#1{%
   3598   {%
   3599     \makevalueexpandable
   3600     \edef\temp{\noexpand\tablez #1\space\space\space}%
   3601     \expandafter
   3602   }\temp \endtablez
   3603 }
   3604 \def\tablez #1 #2 #3 #4\endtablez{%
   3605   \aboveenvbreak
   3606   \ifnum 0#1>0 \advance \leftskip by #1\mil \fi
   3607   \ifnum 0#2>0 \tableindent=#2\mil \fi
   3608   \ifnum 0#3>0 \advance \rightskip by #3\mil \fi
   3609   \itemmax=\tableindent
   3610   \advance \itemmax by -\itemmargin
   3611   \advance \leftskip by \tableindent
   3612   \exdentamount=\tableindent
   3613   \parindent = 0pt
   3614   \parskip = \smallskipamount
   3615   \ifdim \parskip=0pt \parskip=2pt \fi
   3616   \let\item = \internalBitem
   3617   \let\itemx = \internalBitemx
   3618 }
   3619 \def\Etable{\endgraf\afterenvbreak}
   3620 \let\Eftable\Etable
   3621 \let\Evtable\Etable
   3622 \let\Eitemize\Etable
   3623 \let\Eenumerate\Etable
   3624 
   3625 % This is the counter used by @enumerate, which is really @itemize
   3626 
   3627 \newcount \itemno
   3628 
   3629 \envdef\itemize{\parsearg\doitemize}
   3630 
   3631 \def\doitemize#1{%
   3632   \aboveenvbreak
   3633   \itemmax=\itemindent
   3634   \advance\itemmax by -\itemmargin
   3635   \advance\leftskip by \itemindent
   3636   \exdentamount=\itemindent
   3637   \parindent=0pt
   3638   \parskip=\smallskipamount
   3639   \ifdim\parskip=0pt \parskip=2pt \fi
   3640   %
   3641   % Try typesetting the item mark that if the document erroneously says
   3642   % something like @itemize @samp (intending @table), there's an error
   3643   % right away at the @itemize.  It's not the best error message in the
   3644   % world, but it's better than leaving it to the @item.  This means if
   3645   % the user wants an empty mark, they have to say @w{} not just @w.
   3646   \def\itemcontents{#1}%
   3647   \setbox0 = \hbox{\itemcontents}%
   3648   %
   3649   % @itemize with no arg is equivalent to @itemize @bullet.
   3650   \ifx\itemcontents\empty\def\itemcontents{\bullet}\fi
   3651   %
   3652   \let\item=\itemizeitem
   3653 }
   3654 
   3655 % Definition of @item while inside @itemize and @enumerate.
   3656 %
   3657 \def\itemizeitem{%
   3658   \advance\itemno by 1  % for enumerations
   3659   {\let\par=\endgraf \smallbreak}% reasonable place to break
   3660   {%
   3661    % If the document has an @itemize directly after a section title, a
   3662    % \nobreak will be last on the list, and \sectionheading will have
   3663    % done a \vskip-\parskip.  In that case, we don't want to zero
   3664    % parskip, or the item text will crash with the heading.  On the
   3665    % other hand, when there is normal text preceding the item (as there
   3666    % usually is), we do want to zero parskip, or there would be too much
   3667    % space.  In that case, we won't have a \nobreak before.  At least
   3668    % that's the theory.
   3669    \ifnum\lastpenalty<10000 \parskip=0in \fi
   3670    \noindent
   3671    \hbox to 0pt{\hss \itemcontents \kern\itemmargin}%
   3672    %
   3673    \vadjust{\penalty 1200}}% not good to break after first line of item.
   3674   \flushcr
   3675 }
   3676 
   3677 % \splitoff TOKENS\endmark defines \first to be the first token in
   3678 % TOKENS, and \rest to be the remainder.
   3679 %
   3680 \def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
   3681 
   3682 % Allow an optional argument of an uppercase letter, lowercase letter,
   3683 % or number, to specify the first label in the enumerated list.  No
   3684 % argument is the same as `1'.
   3685 %
   3686 \envparseargdef\enumerate{\enumeratey #1  \endenumeratey}
   3687 \def\enumeratey #1 #2\endenumeratey{%
   3688   % If we were given no argument, pretend we were given `1'.
   3689   \def\thearg{#1}%
   3690   \ifx\thearg\empty \def\thearg{1}\fi
   3691   %
   3692   % Detect if the argument is a single token.  If so, it might be a
   3693   % letter.  Otherwise, the only valid thing it can be is a number.
   3694   % (We will always have one token, because of the test we just made.
   3695   % This is a good thing, since \splitoff doesn't work given nothing at
   3696   % all -- the first parameter is undelimited.)
   3697   \expandafter\splitoff\thearg\endmark
   3698   \ifx\rest\empty
   3699     % Only one token in the argument.  It could still be anything.
   3700     % A ``lowercase letter'' is one whose \lccode is nonzero.
   3701     % An ``uppercase letter'' is one whose \lccode is both nonzero, and
   3702     %   not equal to itself.
   3703     % Otherwise, we assume it's a number.
   3704     %
   3705     % We need the \relax at the end of the \ifnum lines to stop TeX from
   3706     % continuing to look for a <number>.
   3707     %
   3708     \ifnum\lccode\expandafter`\thearg=0\relax
   3709       \numericenumerate % a number (we hope)
   3710     \else
   3711       % It's a letter.
   3712       \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
   3713         \lowercaseenumerate % lowercase letter
   3714       \else
   3715         \uppercaseenumerate % uppercase letter
   3716       \fi
   3717     \fi
   3718   \else
   3719     % Multiple tokens in the argument.  We hope it's a number.
   3720     \numericenumerate
   3721   \fi
   3722 }
   3723 
   3724 % An @enumerate whose labels are integers.  The starting integer is
   3725 % given in \thearg.
   3726 %
   3727 \def\numericenumerate{%
   3728   \itemno = \thearg
   3729   \startenumeration{\the\itemno}%
   3730 }
   3731 
   3732 % The starting (lowercase) letter is in \thearg.
   3733 \def\lowercaseenumerate{%
   3734   \itemno = \expandafter`\thearg
   3735   \startenumeration{%
   3736     % Be sure we're not beyond the end of the alphabet.
   3737     \ifnum\itemno=0
   3738       \errmessage{No more lowercase letters in @enumerate; get a bigger
   3739                   alphabet}%
   3740     \fi
   3741     \char\lccode\itemno
   3742   }%
   3743 }
   3744 
   3745 % The starting (uppercase) letter is in \thearg.
   3746 \def\uppercaseenumerate{%
   3747   \itemno = \expandafter`\thearg
   3748   \startenumeration{%
   3749     % Be sure we're not beyond the end of the alphabet.
   3750     \ifnum\itemno=0
   3751       \errmessage{No more uppercase letters in @enumerate; get a bigger
   3752                   alphabet}
   3753     \fi
   3754     \char\uccode\itemno
   3755   }%
   3756 }
   3757 
   3758 % Call \doitemize, adding a period to the first argument and supplying the
   3759 % common last two arguments.  Also subtract one from the initial value in
   3760 % \itemno, since @item increments \itemno.
   3761 %
   3762 \def\startenumeration#1{%
   3763   \advance\itemno by -1
   3764   \doitemize{#1.}\flushcr
   3765 }
   3766 
   3767 % @alphaenumerate and @capsenumerate are abbreviations for giving an arg
   3768 % to @enumerate.
   3769 %
   3770 \def\alphaenumerate{\enumerate{a}}
   3771 \def\capsenumerate{\enumerate{A}}
   3772 \def\Ealphaenumerate{\Eenumerate}
   3773 \def\Ecapsenumerate{\Eenumerate}
   3774 
   3775 
   3776 % @multitable macros
   3777 % Amy Hendrickson, 8/18/94, 3/6/96
   3778 %
   3779 % @multitable ... @end multitable will make as many columns as desired.
   3780 % Contents of each column will wrap at width given in preamble.  Width
   3781 % can be specified either with sample text given in a template line,
   3782 % or in percent of \hsize, the current width of text on page.
   3783 
   3784 % Table can continue over pages but will only break between lines.
   3785 
   3786 % To make preamble:
   3787 %
   3788 % Either define widths of columns in terms of percent of \hsize:
   3789 %   @multitable @columnfractions .25 .3 .45
   3790 %   @item ...
   3791 %
   3792 %   Numbers following @columnfractions are the percent of the total
   3793 %   current hsize to be used for each column. You may use as many
   3794 %   columns as desired.
   3795 
   3796 
   3797 % Or use a template:
   3798 %   @multitable {Column 1 template} {Column 2 template} {Column 3 template}
   3799 %   @item ...
   3800 %   using the widest term desired in each column.
   3801 
   3802 % Each new table line starts with @item, each subsequent new column
   3803 % starts with @tab. Empty columns may be produced by supplying @tab's
   3804 % with nothing between them for as many times as empty columns are needed,
   3805 % ie, @tab@tab@tab will produce two empty columns.
   3806 
   3807 % @item, @tab do not need to be on their own lines, but it will not hurt
   3808 % if they are.
   3809 
   3810 % Sample multitable:
   3811 
   3812 %   @multitable {Column 1 template} {Column 2 template} {Column 3 template}
   3813 %   @item first col stuff @tab second col stuff @tab third col
   3814 %   @item
   3815 %   first col stuff
   3816 %   @tab
   3817 %   second col stuff
   3818 %   @tab
   3819 %   third col
   3820 %   @item first col stuff @tab second col stuff
   3821 %   @tab Many paragraphs of text may be used in any column.
   3822 %
   3823 %         They will wrap at the width determined by the template.
   3824 %   @item@tab@tab This will be in third column.
   3825 %   @end multitable
   3826 
   3827 % Default dimensions may be reset by user.
   3828 % @multitableparskip is vertical space between paragraphs in table.
   3829 % @multitableparindent is paragraph indent in table.
   3830 % @multitablecolmargin is horizontal space to be left between columns.
   3831 % @multitablelinespace is space to leave between table items, baseline
   3832 %                                                            to baseline.
   3833 %   0pt means it depends on current normal line spacing.
   3834 %
   3835 \newskip\multitableparskip
   3836 \newskip\multitableparindent
   3837 \newdimen\multitablecolspace
   3838 \newskip\multitablelinespace
   3839 \multitableparskip=0pt
   3840 \multitableparindent=6pt
   3841 \multitablecolspace=12pt
   3842 \multitablelinespace=0pt
   3843 
   3844 % Macros used to set up halign preamble:
   3845 %
   3846 \let\endsetuptable\relax
   3847 \def\xendsetuptable{\endsetuptable}
   3848 \let\columnfractions\relax
   3849 \def\xcolumnfractions{\columnfractions}
   3850 \newif\ifsetpercent
   3851 
   3852 % #1 is the @columnfraction, usually a decimal number like .5, but might
   3853 % be just 1.  We just use it, whatever it is.
   3854 %
   3855 \def\pickupwholefraction#1 {%
   3856   \global\advance\colcount by 1
   3857   \expandafter\xdef\csname col\the\colcount\endcsname{#1\hsize}%
   3858   \setuptable
   3859 }
   3860 
   3861 \newcount\colcount
   3862 \def\setuptable#1{%
   3863   \def\firstarg{#1}%
   3864   \ifx\firstarg\xendsetuptable
   3865     \let\go = \relax
   3866   \else
   3867     \ifx\firstarg\xcolumnfractions
   3868       \global\setpercenttrue
   3869     \else
   3870       \ifsetpercent
   3871          \let\go\pickupwholefraction
   3872       \else
   3873          \global\advance\colcount by 1
   3874          \setbox0=\hbox{#1\unskip\space}% Add a normal word space as a
   3875                    % separator; typically that is always in the input, anyway.
   3876          \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}%
   3877       \fi
   3878     \fi
   3879     \ifx\go\pickupwholefraction
   3880       % Put the argument back for the \pickupwholefraction call, so
   3881       % we'll always have a period there to be parsed.
   3882       \def\go{\pickupwholefraction#1}%
   3883     \else
   3884       \let\go = \setuptable
   3885     \fi%
   3886   \fi
   3887   \go
   3888 }
   3889 
   3890 % multitable-only commands.
   3891 %
   3892 % @headitem starts a heading row, which we typeset in bold.
   3893 % Assignments have to be global since we are inside the implicit group
   3894 % of an alignment entry.  \everycr resets \everytab so we don't have to
   3895 % undo it ourselves.
   3896 \def\headitemfont{\b}% for people to use in the template row; not changeable
   3897 \def\headitem{%
   3898   \checkenv\multitable
   3899   \crcr
   3900   \global\everytab={\bf}% can't use \headitemfont since the parsing differs
   3901   \the\everytab % for the first item
   3902 }%
   3903 %
   3904 % A \tab used to include \hskip1sp.  But then the space in a template
   3905 % line is not enough.  That is bad.  So let's go back to just `&' until
   3906 % we again encounter the problem the 1sp was intended to solve.
   3907 %					--karl, nathan (a] acm.org, 20apr99.
   3908 \def\tab{\checkenv\multitable &\the\everytab}%
   3909 
   3910 % @multitable ... @end multitable definitions:
   3911 %
   3912 \newtoks\everytab  % insert after every tab.
   3913 %
   3914 \envdef\multitable{%
   3915   \vskip\parskip
   3916   \startsavinginserts
   3917   %
   3918   % @item within a multitable starts a normal row.
   3919   % We use \def instead of \let so that if one of the multitable entries
   3920   % contains an @itemize, we don't choke on the \item (seen as \crcr aka
   3921   % \endtemplate) expanding \doitemize.
   3922   \def\item{\crcr}%
   3923   %
   3924   \tolerance=9500
   3925   \hbadness=9500
   3926   \setmultitablespacing
   3927   \parskip=\multitableparskip
   3928   \parindent=\multitableparindent
   3929   \overfullrule=0pt
   3930   \global\colcount=0
   3931   %
   3932   \everycr = {%
   3933     \noalign{%
   3934       \global\everytab={}%
   3935       \global\colcount=0 % Reset the column counter.
   3936       % Check for saved footnotes, etc.
   3937       \checkinserts
   3938       % Keeps underfull box messages off when table breaks over pages.
   3939       %\filbreak
   3940 	% Maybe so, but it also creates really weird page breaks when the
   3941 	% table breaks over pages. Wouldn't \vfil be better?  Wait until the
   3942 	% problem manifests itself, so it can be fixed for real --karl.
   3943     }%
   3944   }%
   3945   %
   3946   \parsearg\domultitable
   3947 }
   3948 \def\domultitable#1{%
   3949   % To parse everything between @multitable and @item:
   3950   \setuptable#1 \endsetuptable
   3951   %
   3952   % This preamble sets up a generic column definition, which will
   3953   % be used as many times as user calls for columns.
   3954   % \vtop will set a single line and will also let text wrap and
   3955   % continue for many paragraphs if desired.
   3956   \halign\bgroup &%
   3957     \global\advance\colcount by 1
   3958     \multistrut
   3959     \vtop{%
   3960       % Use the current \colcount to find the correct column width:
   3961       \hsize=\expandafter\csname col\the\colcount\endcsname
   3962       %
   3963       % In order to keep entries from bumping into each other
   3964       % we will add a \leftskip of \multitablecolspace to all columns after
   3965       % the first one.
   3966       %
   3967       % If a template has been used, we will add \multitablecolspace
   3968       % to the width of each template entry.
   3969       %
   3970       % If the user has set preamble in terms of percent of \hsize we will
   3971       % use that dimension as the width of the column, and the \leftskip
   3972       % will keep entries from bumping into each other.  Table will start at
   3973       % left margin and final column will justify at right margin.
   3974       %
   3975       % Make sure we don't inherit \rightskip from the outer environment.
   3976       \rightskip=0pt
   3977       \ifnum\colcount=1
   3978 	% The first column will be indented with the surrounding text.
   3979 	\advance\hsize by\leftskip
   3980       \else
   3981 	\ifsetpercent \else
   3982 	  % If user has not set preamble in terms of percent of \hsize
   3983 	  % we will advance \hsize by \multitablecolspace.
   3984 	  \advance\hsize by \multitablecolspace
   3985 	\fi
   3986        % In either case we will make \leftskip=\multitablecolspace:
   3987       \leftskip=\multitablecolspace
   3988       \fi
   3989       % Ignoring space at the beginning and end avoids an occasional spurious
   3990       % blank line, when TeX decides to break the line at the space before the
   3991       % box from the multistrut, so the strut ends up on a line by itself.
   3992       % For example:
   3993       % @multitable @columnfractions .11 .89
   3994       % @item @code{#}
   3995       % @tab Legal holiday which is valid in major parts of the whole country.
   3996       % Is automatically provided with highlighting sequences respectively
   3997       % marking characters.
   3998       \noindent\ignorespaces##\unskip\multistrut
   3999     }\cr
   4000 }
   4001 \def\Emultitable{%
   4002   \crcr
   4003   \egroup % end the \halign
   4004   \global\setpercentfalse
   4005 }
   4006 
   4007 \def\setmultitablespacing{%
   4008   \def\multistrut{\strut}% just use the standard line spacing
   4009   %
   4010   % Compute \multitablelinespace (if not defined by user) for use in
   4011   % \multitableparskip calculation.  We used define \multistrut based on
   4012   % this, but (ironically) that caused the spacing to be off.
   4013   % See bug-texinfo report from Werner Lemberg, 31 Oct 2004 12:52:20 +0100.
   4014 \ifdim\multitablelinespace=0pt
   4015 \setbox0=\vbox{X}\global\multitablelinespace=\the\baselineskip
   4016 \global\advance\multitablelinespace by-\ht0
   4017 \fi
   4018 % Test to see if parskip is larger than space between lines of
   4019 % table. If not, do nothing.
   4020 %        If so, set to same dimension as multitablelinespace.
   4021 \ifdim\multitableparskip>\multitablelinespace
   4022 \global\multitableparskip=\multitablelinespace
   4023 \global\advance\multitableparskip-7pt % to keep parskip somewhat smaller
   4024                                       % than skip between lines in the table.
   4025 \fi%
   4026 \ifdim\multitableparskip=0pt
   4027 \global\multitableparskip=\multitablelinespace
   4028 \global\advance\multitableparskip-7pt % to keep parskip somewhat smaller
   4029                                       % than skip between lines in the table.
   4030 \fi}
   4031 
   4032 
   4033 \message{conditionals,}
   4034 
   4035 % @iftex, @ifnotdocbook, @ifnothtml, @ifnotinfo, @ifnotplaintext,
   4036 % @ifnotxml always succeed.  They currently do nothing; we don't
   4037 % attempt to check whether the conditionals are properly nested.  But we
   4038 % have to remember that they are conditionals, so that @end doesn't
   4039 % attempt to close an environment group.
   4040 %
   4041 \def\makecond#1{%
   4042   \expandafter\let\csname #1\endcsname = \relax
   4043   \expandafter\let\csname iscond.#1\endcsname = 1
   4044 }
   4045 \makecond{iftex}
   4046 \makecond{ifnotdocbook}
   4047 \makecond{ifnothtml}
   4048 \makecond{ifnotinfo}
   4049 \makecond{ifnotplaintext}
   4050 \makecond{ifnotxml}
   4051 
   4052 % Ignore @ignore, @ifhtml, @ifinfo, and the like.
   4053 %
   4054 \def\direntry{\doignore{direntry}}
   4055 \def\documentdescription{\doignore{documentdescription}}
   4056 \def\docbook{\doignore{docbook}}
   4057 \def\html{\doignore{html}}
   4058 \def\ifdocbook{\doignore{ifdocbook}}
   4059 \def\ifhtml{\doignore{ifhtml}}
   4060 \def\ifinfo{\doignore{ifinfo}}
   4061 \def\ifnottex{\doignore{ifnottex}}
   4062 \def\ifplaintext{\doignore{ifplaintext}}
   4063 \def\ifxml{\doignore{ifxml}}
   4064 \def\ignore{\doignore{ignore}}
   4065 \def\menu{\doignore{menu}}
   4066 \def\xml{\doignore{xml}}
   4067 
   4068 % Ignore text until a line `@end #1', keeping track of nested conditionals.
   4069 %
   4070 % A count to remember the depth of nesting.
   4071 \newcount\doignorecount
   4072 
   4073 \def\doignore#1{\begingroup
   4074   % Scan in ``verbatim'' mode:
   4075   \obeylines
   4076   \catcode`\@ = \other
   4077   \catcode`\{ = \other
   4078   \catcode`\} = \other
   4079   %
   4080   % Make sure that spaces turn into tokens that match what \doignoretext wants.
   4081   \spaceisspace
   4082   %
   4083   % Count number of #1's that we've seen.
   4084   \doignorecount = 0
   4085   %
   4086   % Swallow text until we reach the matching `@end #1'.
   4087   \dodoignore{#1}%
   4088 }
   4089 
   4090 { \catcode`_=11 % We want to use \_STOP_ which cannot appear in texinfo source.
   4091   \obeylines %
   4092   %
   4093   \gdef\dodoignore#1{%
   4094     % #1 contains the command name as a string, e.g., `ifinfo'.
   4095     %
   4096     % Define a command to find the next `@end #1'.
   4097     \long\def\doignoretext##1^^M@end #1{%
   4098       \doignoretextyyy##1^^M@#1\_STOP_}%
   4099     %
   4100     % And this command to find another #1 command, at the beginning of a
   4101     % line.  (Otherwise, we would consider a line `@c @ifset', for
   4102     % example, to count as an @ifset for nesting.)
   4103     \long\def\doignoretextyyy##1^^M@#1##2\_STOP_{\doignoreyyy{##2}\_STOP_}%
   4104     %
   4105     % And now expand that command.
   4106     \doignoretext ^^M%
   4107   }%
   4108 }
   4109 
   4110 \def\doignoreyyy#1{%
   4111   \def\temp{#1}%
   4112   \ifx\temp\empty			% Nothing found.
   4113     \let\next\doignoretextzzz
   4114   \else					% Found a nested condition, ...
   4115     \advance\doignorecount by 1
   4116     \let\next\doignoretextyyy		% ..., look for another.
   4117     % If we're here, #1 ends with ^^M\ifinfo (for example).
   4118   \fi
   4119   \next #1% the token \_STOP_ is present just after this macro.
   4120 }
   4121 
   4122 % We have to swallow the remaining "\_STOP_".
   4123 %
   4124 \def\doignoretextzzz#1{%
   4125   \ifnum\doignorecount = 0	% We have just found the outermost @end.
   4126     \let\next\enddoignore
   4127   \else				% Still inside a nested condition.
   4128     \advance\doignorecount by -1
   4129     \let\next\doignoretext      % Look for the next @end.
   4130   \fi
   4131   \next
   4132 }
   4133 
   4134 % Finish off ignored text.
   4135 { \obeylines%
   4136   % Ignore anything after the last `@end #1'; this matters in verbatim
   4137   % environments, where otherwise the newline after an ignored conditional
   4138   % would result in a blank line in the output.
   4139   \gdef\enddoignore#1^^M{\endgroup\ignorespaces}%
   4140 }
   4141 
   4142 
   4143 % @set VAR sets the variable VAR to an empty value.
   4144 % @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE.
   4145 %
   4146 % Since we want to separate VAR from REST-OF-LINE (which might be
   4147 % empty), we can't just use \parsearg; we have to insert a space of our
   4148 % own to delimit the rest of the line, and then take it out again if we
   4149 % didn't need it.
   4150 % We rely on the fact that \parsearg sets \catcode`\ =10.
   4151 %
   4152 \parseargdef\set{\setyyy#1 \endsetyyy}
   4153 \def\setyyy#1 #2\endsetyyy{%
   4154   {%
   4155     \makevalueexpandable
   4156     \def\temp{#2}%
   4157     \edef\next{\gdef\makecsname{SET#1}}%
   4158     \ifx\temp\empty
   4159       \next{}%
   4160     \else
   4161       \setzzz#2\endsetzzz
   4162     \fi
   4163   }%
   4164 }
   4165 % Remove the trailing space \setxxx inserted.
   4166 \def\setzzz#1 \endsetzzz{\next{#1}}
   4167 
   4168 % @clear VAR clears (i.e., unsets) the variable VAR.
   4169 %
   4170 \parseargdef\clear{%
   4171   {%
   4172     \makevalueexpandable
   4173     \global\expandafter\let\csname SET#1\endcsname=\relax
   4174   }%
   4175 }
   4176 
   4177 % @value{foo} gets the text saved in variable foo.
   4178 \def\value{\begingroup\makevalueexpandable\valuexxx}
   4179 \def\valuexxx#1{\expandablevalue{#1}\endgroup}
   4180 {
   4181   \catcode`\- = \active \catcode`\_ = \active
   4182   %
   4183   \gdef\makevalueexpandable{%
   4184     \let\value = \expandablevalue
   4185     % We don't want these characters active, ...
   4186     \catcode`\-=\other \catcode`\_=\other
   4187     % ..., but we might end up with active ones in the argument if
   4188     % we're called from @code, as @code{@value{foo-bar_}}, though.
   4189     % So \let them to their normal equivalents.
   4190     \let-\realdash \let_\normalunderscore
   4191   }
   4192 }
   4193 
   4194 % We have this subroutine so that we can handle at least some @value's
   4195 % properly in indexes (we call \makevalueexpandable in \indexdummies).
   4196 % The command has to be fully expandable (if the variable is set), since
   4197 % the result winds up in the index file.  This means that if the
   4198 % variable's value contains other Texinfo commands, it's almost certain
   4199 % it will fail (although perhaps we could fix that with sufficient work
   4200 % to do a one-level expansion on the result, instead of complete).
   4201 %
   4202 \def\expandablevalue#1{%
   4203   \expandafter\ifx\csname SET#1\endcsname\relax
   4204     {[No value for ``#1'']}%
   4205     \message{Variable `#1', used in @value, is not set.}%
   4206   \else
   4207     \csname SET#1\endcsname
   4208   \fi
   4209 }
   4210 
   4211 % @ifset VAR ... @end ifset reads the `...' iff VAR has been defined
   4212 % with @set.
   4213 %
   4214 % To get special treatment of `@end ifset,' call \makeond and the redefine.
   4215 %
   4216 \makecond{ifset}
   4217 \def\ifset{\parsearg{\doifset{\let\next=\ifsetfail}}}
   4218 \def\doifset#1#2{%
   4219   {%
   4220     \makevalueexpandable
   4221     \let\next=\empty
   4222     \expandafter\ifx\csname SET#2\endcsname\relax
   4223       #1% If not set, redefine \next.
   4224     \fi
   4225     \expandafter
   4226   }\next
   4227 }
   4228 \def\ifsetfail{\doignore{ifset}}
   4229 
   4230 % @ifclear VAR ... @end executes the `...' iff VAR has never been
   4231 % defined with @set, or has been undefined with @clear.
   4232 %
   4233 % The `\else' inside the `\doifset' parameter is a trick to reuse the
   4234 % above code: if the variable is not set, do nothing, if it is set,
   4235 % then redefine \next to \ifclearfail.
   4236 %
   4237 \makecond{ifclear}
   4238 \def\ifclear{\parsearg{\doifset{\else \let\next=\ifclearfail}}}
   4239 \def\ifclearfail{\doignore{ifclear}}
   4240 
   4241 % @ifcommandisdefined CMD ... @end executes the `...' if CMD (written
   4242 % without the @) is in fact defined.  We can only feasibly check at the
   4243 % TeX level, so something like `mathcode' is going to considered
   4244 % defined even though it is not a Texinfo command.
   4245 % 
   4246 \makecond{ifcommanddefined}
   4247 \def\ifcommanddefined{\parsearg{\doifcmddefined{\let\next=\ifcmddefinedfail}}}
   4248 %
   4249 \def\doifcmddefined#1#2{{%
   4250     \makevalueexpandable
   4251     \let\next=\empty
   4252     \expandafter\ifx\csname #2\endcsname\relax
   4253       #1% If not defined, \let\next as above.
   4254     \fi
   4255     \expandafter
   4256   }\next
   4257 }
   4258 \def\ifcmddefinedfail{\doignore{ifcommanddefined}}
   4259 
   4260 % @ifcommandnotdefined CMD ... handled similar to @ifclear above.
   4261 \makecond{ifcommandnotdefined}
   4262 \def\ifcommandnotdefined{%
   4263   \parsearg{\doifcmddefined{\else \let\next=\ifcmdnotdefinedfail}}}
   4264 \def\ifcmdnotdefinedfail{\doignore{ifcommandnotdefined}}
   4265 
   4266 % Set the `txicommandconditionals' variable, so documents have a way to
   4267 % test if the @ifcommand...defined conditionals are available.
   4268 \set txicommandconditionals
   4269 
   4270 % @dircategory CATEGORY  -- specify a category of the dir file
   4271 % which this file should belong to.  Ignore this in TeX.
   4272 \let\dircategory=\comment
   4273 
   4274 % @defininfoenclose.
   4275 \let\definfoenclose=\comment
   4276 
   4277 
   4278 \message{indexing,}
   4279 % Index generation facilities
   4280 
   4281 % Define \newwrite to be identical to plain tex's \newwrite
   4282 % except not \outer, so it can be used within macros and \if's.
   4283 \edef\newwrite{\makecsname{ptexnewwrite}}
   4284 
   4285 % \newindex {foo} defines an index named foo.
   4286 % It automatically defines \fooindex such that
   4287 % \fooindex ...rest of line... puts an entry in the index foo.
   4288 % It also defines \fooindfile to be the number of the output channel for
   4289 % the file that accumulates this index.  The file's extension is foo.
   4290 % The name of an index should be no more than 2 characters long
   4291 % for the sake of vms.
   4292 %
   4293 \def\newindex#1{%
   4294   \iflinks
   4295     \expandafter\newwrite \csname#1indfile\endcsname
   4296     \openout \csname#1indfile\endcsname \jobname.#1 % Open the file
   4297   \fi
   4298   \expandafter\xdef\csname#1index\endcsname{%     % Define @#1index
   4299     \noexpand\doindex{#1}}
   4300 }
   4301 
   4302 % @defindex foo  ==  \newindex{foo}
   4303 %
   4304 \def\defindex{\parsearg\newindex}
   4305 
   4306 % Define @defcodeindex, like @defindex except put all entries in @code.
   4307 %
   4308 \def\defcodeindex{\parsearg\newcodeindex}
   4309 %
   4310 \def\newcodeindex#1{%
   4311   \iflinks
   4312     \expandafter\newwrite \csname#1indfile\endcsname
   4313     \openout \csname#1indfile\endcsname \jobname.#1
   4314   \fi
   4315   \expandafter\xdef\csname#1index\endcsname{%
   4316     \noexpand\docodeindex{#1}}%
   4317 }
   4318 
   4319 
   4320 % @synindex foo bar    makes index foo feed into index bar.
   4321 % Do this instead of @defindex foo if you don't want it as a separate index.
   4322 %
   4323 % @syncodeindex foo bar   similar, but put all entries made for index foo
   4324 % inside @code.
   4325 %
   4326 \def\synindex#1 #2 {\dosynindex\doindex{#1}{#2}}
   4327 \def\syncodeindex#1 #2 {\dosynindex\docodeindex{#1}{#2}}
   4328 
   4329 % #1 is \doindex or \docodeindex, #2 the index getting redefined (foo),
   4330 % #3 the target index (bar).
   4331 \def\dosynindex#1#2#3{%
   4332   % Only do \closeout if we haven't already done it, else we'll end up
   4333   % closing the target index.
   4334   \expandafter \ifx\csname donesynindex#2\endcsname \relax
   4335     % The \closeout helps reduce unnecessary open files; the limit on the
   4336     % Acorn RISC OS is a mere 16 files.
   4337     \expandafter\closeout\csname#2indfile\endcsname
   4338     \expandafter\let\csname donesynindex#2\endcsname = 1
   4339   \fi
   4340   % redefine \fooindfile:
   4341   \expandafter\let\expandafter\temp\expandafter=\csname#3indfile\endcsname
   4342   \expandafter\let\csname#2indfile\endcsname=\temp
   4343   % redefine \fooindex:
   4344   \expandafter\xdef\csname#2index\endcsname{\noexpand#1{#3}}%
   4345 }
   4346 
   4347 % Define \doindex, the driver for all \fooindex macros.
   4348 % Argument #1 is generated by the calling \fooindex macro,
   4349 %  and it is "foo", the name of the index.
   4350 
   4351 % \doindex just uses \parsearg; it calls \doind for the actual work.
   4352 % This is because \doind is more useful to call from other macros.
   4353 
   4354 % There is also \dosubind {index}{topic}{subtopic}
   4355 % which makes an entry in a two-level index such as the operation index.
   4356 
   4357 \def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
   4358 \def\singleindexer #1{\doind{\indexname}{#1}}
   4359 
   4360 % like the previous two, but they put @code around the argument.
   4361 \def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
   4362 \def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
   4363 
   4364 % Take care of Texinfo commands that can appear in an index entry.
   4365 % Since there are some commands we want to expand, and others we don't,
   4366 % we have to laboriously prevent expansion for those that we don't.
   4367 %
   4368 \def\indexdummies{%
   4369   \escapechar = `\\     % use backslash in output files.
   4370   \def\@{@}% change to @@ when we switch to @ as escape char in index files.
   4371   \def\ {\realbackslash\space }%
   4372   %
   4373   % Need these unexpandable (because we define \tt as a dummy)
   4374   % definitions when @{ or @} appear in index entry text.  Also, more
   4375   % complicated, when \tex is in effect and \{ is a \delimiter again.
   4376   % We can't use \lbracecmd and \rbracecmd because texindex assumes
   4377   % braces and backslashes are used only as delimiters.  Perhaps we
   4378   % should define @lbrace and @rbrace commands a la @comma.
   4379   \def\{{{\tt\char123}}%
   4380   \def\}{{\tt\char125}}%
   4381   %
   4382   % I don't entirely understand this, but when an index entry is
   4383   % generated from a macro call, the \endinput which \scanmacro inserts
   4384   % causes processing to be prematurely terminated.  This is,
   4385   % apparently, because \indexsorttmp is fully expanded, and \endinput
   4386   % is an expandable command.  The redefinition below makes \endinput
   4387   % disappear altogether for that purpose -- although logging shows that
   4388   % processing continues to some further point.  On the other hand, it
   4389   % seems \endinput does not hurt in the printed index arg, since that
   4390   % is still getting written without apparent harm.
   4391   %
   4392   % Sample source (mac-idx3.tex, reported by Graham Percival to
   4393   % help-texinfo, 22may06):
   4394   % @macro funindex {WORD}
   4395   % @findex xyz
   4396   % @end macro
   4397   % ...
   4398   % @funindex commtest
   4399   %
   4400   % The above is not enough to reproduce the bug, but it gives the flavor.
   4401   %
   4402   % Sample whatsit resulting:
   4403   % .@write3{\entry{xyz}{@folio }{@code {xyz@endinput }}}
   4404   %
   4405   % So:
   4406   \let\endinput = \empty
   4407   %
   4408   % Do the redefinitions.
   4409   \commondummies
   4410 }
   4411 
   4412 % For the aux and toc files, @ is the escape character.  So we want to
   4413 % redefine everything using @ as the escape character (instead of
   4414 % \realbackslash, still used for index files).  When everything uses @,
   4415 % this will be simpler.
   4416 %
   4417 \def\atdummies{%
   4418   \def\@{@@}%
   4419   \def\ {@ }%
   4420   \let\{ = \lbraceatcmd
   4421   \let\} = \rbraceatcmd
   4422   %
   4423   % Do the redefinitions.
   4424   \commondummies
   4425   \otherbackslash
   4426 }
   4427 
   4428 % Called from \indexdummies and \atdummies.
   4429 %
   4430 \def\commondummies{%
   4431   %
   4432   % \definedummyword defines \#1 as \string\#1\space, thus effectively
   4433   % preventing its expansion.  This is used only for control words,
   4434   % not control letters, because the \space would be incorrect for
   4435   % control characters, but is needed to separate the control word
   4436   % from whatever follows.
   4437   %
   4438   % For control letters, we have \definedummyletter, which omits the
   4439   % space.
   4440   %
   4441   % These can be used both for control words that take an argument and
   4442   % those that do not.  If it is followed by {arg} in the input, then
   4443   % that will dutifully get written to the index (or wherever).
   4444   %
   4445   \def\definedummyword  ##1{\def##1{\string##1\space}}%
   4446   \def\definedummyletter##1{\def##1{\string##1}}%
   4447   \let\definedummyaccent\definedummyletter
   4448   %
   4449   \commondummiesnofonts
   4450   %
   4451   \definedummyletter\_%
   4452   \definedummyletter\-%
   4453   %
   4454   % Non-English letters.
   4455   \definedummyword\AA
   4456   \definedummyword\AE
   4457   \definedummyword\DH
   4458   \definedummyword\L
   4459   \definedummyword\O
   4460   \definedummyword\OE
   4461   \definedummyword\TH
   4462   \definedummyword\aa
   4463   \definedummyword\ae
   4464   \definedummyword\dh
   4465   \definedummyword\exclamdown
   4466   \definedummyword\l
   4467   \definedummyword\o
   4468   \definedummyword\oe
   4469   \definedummyword\ordf
   4470   \definedummyword\ordm
   4471   \definedummyword\questiondown
   4472   \definedummyword\ss
   4473   \definedummyword\th
   4474   %
   4475   % Although these internal commands shouldn't show up, sometimes they do.
   4476   \definedummyword\bf
   4477   \definedummyword\gtr
   4478   \definedummyword\hat
   4479   \definedummyword\less
   4480   \definedummyword\sf
   4481   \definedummyword\sl
   4482   \definedummyword\tclose
   4483   \definedummyword\tt
   4484   %
   4485   \definedummyword\LaTeX
   4486   \definedummyword\TeX
   4487   %
   4488   % Assorted special characters.
   4489   \definedummyword\arrow
   4490   \definedummyword\bullet
   4491   \definedummyword\comma
   4492   \definedummyword\copyright
   4493   \definedummyword\registeredsymbol
   4494   \definedummyword\dots
   4495   \definedummyword\enddots
   4496   \definedummyword\entrybreak
   4497   \definedummyword\equiv
   4498   \definedummyword\error
   4499   \definedummyword\euro
   4500   \definedummyword\expansion
   4501   \definedummyword\geq
   4502   \definedummyword\guillemetleft
   4503   \definedummyword\guillemetright
   4504   \definedummyword\guilsinglleft
   4505   \definedummyword\guilsinglright
   4506   \definedummyword\lbracechar
   4507   \definedummyword\leq
   4508   \definedummyword\minus
   4509   \definedummyword\ogonek
   4510   \definedummyword\pounds
   4511   \definedummyword\point
   4512   \definedummyword\print
   4513   \definedummyword\quotedblbase
   4514   \definedummyword\quotedblleft
   4515   \definedummyword\quotedblright
   4516   \definedummyword\quoteleft
   4517   \definedummyword\quoteright
   4518   \definedummyword\quotesinglbase
   4519   \definedummyword\rbracechar
   4520   \definedummyword\result
   4521   \definedummyword\textdegree
   4522   %
   4523   % We want to disable all macros so that they are not expanded by \write.
   4524   \macrolist
   4525   %
   4526   \normalturnoffactive
   4527   %
   4528   % Handle some cases of @value -- where it does not contain any
   4529   % (non-fully-expandable) commands.
   4530   \makevalueexpandable
   4531 }
   4532 
   4533 % \commondummiesnofonts: common to \commondummies and \indexnofonts.
   4534 %
   4535 \def\commondummiesnofonts{%
   4536   % Control letters and accents.
   4537   \definedummyletter\!%
   4538   \definedummyaccent\"%
   4539   \definedummyaccent\'%
   4540   \definedummyletter\*%
   4541   \definedummyaccent\,%
   4542   \definedummyletter\.%
   4543   \definedummyletter\/%
   4544   \definedummyletter\:%
   4545   \definedummyaccent\=%
   4546   \definedummyletter\?%
   4547   \definedummyaccent\^%
   4548   \definedummyaccent\`%
   4549   \definedummyaccent\~%
   4550   \definedummyword\u
   4551   \definedummyword\v
   4552   \definedummyword\H
   4553   \definedummyword\dotaccent
   4554   \definedummyword\ogonek
   4555   \definedummyword\ringaccent
   4556   \definedummyword\tieaccent
   4557   \definedummyword\ubaraccent
   4558   \definedummyword\udotaccent
   4559   \definedummyword\dotless
   4560   %
   4561   % Texinfo font commands.
   4562   \definedummyword\b
   4563   \definedummyword\i
   4564   \definedummyword\r
   4565   \definedummyword\sansserif
   4566   \definedummyword\sc
   4567   \definedummyword\slanted
   4568   \definedummyword\t
   4569   %
   4570   % Commands that take arguments.
   4571   \definedummyword\abbr
   4572   \definedummyword\acronym
   4573   \definedummyword\anchor
   4574   \definedummyword\cite
   4575   \definedummyword\code
   4576   \definedummyword\command
   4577   \definedummyword\dfn
   4578   \definedummyword\dmn
   4579   \definedummyword\email
   4580   \definedummyword\emph
   4581   \definedummyword\env
   4582   \definedummyword\file
   4583   \definedummyword\image
   4584   \definedummyword\indicateurl
   4585   \definedummyword\inforef
   4586   \definedummyword\kbd
   4587   \definedummyword\key
   4588   \definedummyword\math
   4589   \definedummyword\option
   4590   \definedummyword\pxref
   4591   \definedummyword\ref
   4592   \definedummyword\samp
   4593   \definedummyword\strong
   4594   \definedummyword\tie
   4595   \definedummyword\uref
   4596   \definedummyword\url
   4597   \definedummyword\var
   4598   \definedummyword\verb
   4599   \definedummyword\w
   4600   \definedummyword\xref
   4601 }
   4602 
   4603 % \indexnofonts is used when outputting the strings to sort the index
   4604 % by, and when constructing control sequence names.  It eliminates all
   4605 % control sequences and just writes whatever the best ASCII sort string
   4606 % would be for a given command (usually its argument).
   4607 %
   4608 \def\indexnofonts{%
   4609   % Accent commands should become @asis.
   4610   \def\definedummyaccent##1{\let##1\asis}%
   4611   % We can just ignore other control letters.
   4612   \def\definedummyletter##1{\let##1\empty}%
   4613   % All control words become @asis by default; overrides below.
   4614   \let\definedummyword\definedummyaccent
   4615   %
   4616   \commondummiesnofonts
   4617   %
   4618   % Don't no-op \tt, since it isn't a user-level command
   4619   % and is used in the definitions of the active chars like <, >, |, etc.
   4620   % Likewise with the other plain tex font commands.
   4621   %\let\tt=\asis
   4622   %
   4623   \def\ { }%
   4624   \def\@{@}%
   4625   \def\_{\normalunderscore}%
   4626   \def\-{}% @- shouldn't affect sorting
   4627   %
   4628   % Unfortunately, texindex is not prepared to handle braces in the
   4629   % content at all.  So for index sorting, we map @{ and @} to strings
   4630   % starting with |, since that ASCII character is between ASCII { and }.
   4631   \def\{{|a}%
   4632   \def\lbracechar{|a}%
   4633   %
   4634   \def\}{|b}%
   4635   \def\rbracechar{|b}%
   4636   %
   4637   % Non-English letters.
   4638   \def\AA{AA}%
   4639   \def\AE{AE}%
   4640   \def\DH{DZZ}%
   4641   \def\L{L}%
   4642   \def\OE{OE}%
   4643   \def\O{O}%
   4644   \def\TH{ZZZ}%
   4645   \def\aa{aa}%
   4646   \def\ae{ae}%
   4647   \def\dh{dzz}%
   4648   \def\exclamdown{!}%
   4649   \def\l{l}%
   4650   \def\oe{oe}%
   4651   \def\ordf{a}%
   4652   \def\ordm{o}%
   4653   \def\o{o}%
   4654   \def\questiondown{?}%
   4655   \def\ss{ss}%
   4656   \def\th{zzz}%
   4657   %
   4658   \def\LaTeX{LaTeX}%
   4659   \def\TeX{TeX}%
   4660   %
   4661   % Assorted special characters.
   4662   % (The following {} will end up in the sort string, but that's ok.)
   4663   \def\arrow{->}%
   4664   \def\bullet{bullet}%
   4665   \def\comma{,}%
   4666   \def\copyright{copyright}%
   4667   \def\dots{...}%
   4668   \def\enddots{...}%
   4669   \def\equiv{==}%
   4670   \def\error{error}%
   4671   \def\euro{euro}%
   4672   \def\expansion{==>}%
   4673   \def\geq{>=}%
   4674   \def\guillemetleft{<<}%
   4675   \def\guillemetright{>>}%
   4676   \def\guilsinglleft{<}%
   4677   \def\guilsinglright{>}%
   4678   \def\leq{<=}%
   4679   \def\minus{-}%
   4680   \def\point{.}%
   4681   \def\pounds{pounds}%
   4682   \def\print{-|}%
   4683   \def\quotedblbase{"}%
   4684   \def\quotedblleft{"}%
   4685   \def\quotedblright{"}%
   4686   \def\quoteleft{`}%
   4687   \def\quoteright{'}%
   4688   \def\quotesinglbase{,}%
   4689   \def\registeredsymbol{R}%
   4690   \def\result{=>}%
   4691   \def\textdegree{o}%
   4692   %
   4693   \expandafter\ifx\csname SETtxiindexlquoteignore\endcsname\relax
   4694   \else \indexlquoteignore \fi
   4695   %
   4696   % We need to get rid of all macros, leaving only the arguments (if present).
   4697   % Of course this is not nearly correct, but it is the best we can do for now.
   4698   % makeinfo does not expand macros in the argument to @deffn, which ends up
   4699   % writing an index entry, and texindex isn't prepared for an index sort entry
   4700   % that starts with \.
   4701   %
   4702   % Since macro invocations are followed by braces, we can just redefine them
   4703   % to take a single TeX argument.  The case of a macro invocation that
   4704   % goes to end-of-line is not handled.
   4705   %
   4706   \macrolist
   4707 }
   4708 
   4709 % Undocumented (for FSFS 2nd ed.): @set txiindexlquoteignore makes us
   4710 % ignore left quotes in the sort term.
   4711 {\catcode`\`=\active
   4712  \gdef\indexlquoteignore{\let`=\empty}}
   4713 
   4714 \let\indexbackslash=0  %overridden during \printindex.
   4715 \let\SETmarginindex=\relax % put index entries in margin (undocumented)?
   4716 
   4717 % Most index entries go through here, but \dosubind is the general case.
   4718 % #1 is the index name, #2 is the entry text.
   4719 \def\doind#1#2{\dosubind{#1}{#2}{}}
   4720 
   4721 % Workhorse for all \fooindexes.
   4722 % #1 is name of index, #2 is stuff to put there, #3 is subentry --
   4723 % empty if called from \doind, as we usually are (the main exception
   4724 % is with most defuns, which call us directly).
   4725 %
   4726 \def\dosubind#1#2#3{%
   4727   \iflinks
   4728   {%
   4729     % Store the main index entry text (including the third arg).
   4730     \toks0 = {#2}%
   4731     % If third arg is present, precede it with a space.
   4732     \def\thirdarg{#3}%
   4733     \ifx\thirdarg\empty \else
   4734       \toks0 = \expandafter{\the\toks0 \space #3}%
   4735     \fi
   4736     %
   4737     \edef\writeto{\csname#1indfile\endcsname}%
   4738     %
   4739     \safewhatsit\dosubindwrite
   4740   }%
   4741   \fi
   4742 }
   4743 
   4744 % Write the entry in \toks0 to the index file:
   4745 %
   4746 \def\dosubindwrite{%
   4747   % Put the index entry in the margin if desired.
   4748   \ifx\SETmarginindex\relax\else
   4749     \insert\margin{\hbox{\vrule height8pt depth3pt width0pt \the\toks0}}%
   4750   \fi
   4751   %
   4752   % Remember, we are within a group.
   4753   \indexdummies % Must do this here, since \bf, etc expand at this stage
   4754   \def\backslashcurfont{\indexbackslash}% \indexbackslash isn't defined now
   4755       % so it will be output as is; and it will print as backslash.
   4756   %
   4757   % Process the index entry with all font commands turned off, to
   4758   % get the string to sort by.
   4759   {\indexnofonts
   4760    \edef\temp{\the\toks0}% need full expansion
   4761    \xdef\indexsorttmp{\temp}%
   4762   }%
   4763   %
   4764   % Set up the complete index entry, with both the sort key and
   4765   % the original text, including any font commands.  We write
   4766   % three arguments to \entry to the .?? file (four in the
   4767   % subentry case), texindex reduces to two when writing the .??s
   4768   % sorted result.
   4769   \edef\temp{%
   4770     \write\writeto{%
   4771       \string\entry{\indexsorttmp}{\noexpand\folio}{\the\toks0}}%
   4772   }%
   4773   \temp
   4774 }
   4775 
   4776 % Take care of unwanted page breaks/skips around a whatsit:
   4777 %
   4778 % If a skip is the last thing on the list now, preserve it
   4779 % by backing up by \lastskip, doing the \write, then inserting
   4780 % the skip again.  Otherwise, the whatsit generated by the
   4781 % \write or \pdfdest will make \lastskip zero.  The result is that
   4782 % sequences like this:
   4783 % @end defun
   4784 % @tindex whatever
   4785 % @defun ...
   4786 % will have extra space inserted, because the \medbreak in the
   4787 % start of the @defun won't see the skip inserted by the @end of
   4788 % the previous defun.
   4789 %
   4790 % But don't do any of this if we're not in vertical mode.  We
   4791 % don't want to do a \vskip and prematurely end a paragraph.
   4792 %
   4793 % Avoid page breaks due to these extra skips, too.
   4794 %
   4795 % But wait, there is a catch there:
   4796 % We'll have to check whether \lastskip is zero skip.  \ifdim is not
   4797 % sufficient for this purpose, as it ignores stretch and shrink parts
   4798 % of the skip.  The only way seems to be to check the textual
   4799 % representation of the skip.
   4800 %
   4801 % The following is almost like \def\zeroskipmacro{0.0pt} except that
   4802 % the ``p'' and ``t'' characters have catcode \other, not 11 (letter).
   4803 %
   4804 \edef\zeroskipmacro{\expandafter\the\csname z@skip\endcsname}
   4805 %
   4806 \newskip\whatsitskip
   4807 \newcount\whatsitpenalty
   4808 %
   4809 % ..., ready, GO:
   4810 %
   4811 \def\safewhatsit#1{\ifhmode
   4812   #1%
   4813  \else
   4814   % \lastskip and \lastpenalty cannot both be nonzero simultaneously.
   4815   \whatsitskip = \lastskip
   4816   \edef\lastskipmacro{\the\lastskip}%
   4817   \whatsitpenalty = \lastpenalty
   4818   %
   4819   % If \lastskip is nonzero, that means the last item was a
   4820   % skip.  And since a skip is discardable, that means this
   4821   % -\whatsitskip glue we're inserting is preceded by a
   4822   % non-discardable item, therefore it is not a potential
   4823   % breakpoint, therefore no \nobreak needed.
   4824   \ifx\lastskipmacro\zeroskipmacro
   4825   \else
   4826     \vskip-\whatsitskip
   4827   \fi
   4828   %
   4829   #1%
   4830   %
   4831   \ifx\lastskipmacro\zeroskipmacro
   4832     % If \lastskip was zero, perhaps the last item was a penalty, and
   4833     % perhaps it was >=10000, e.g., a \nobreak.  In that case, we want
   4834     % to re-insert the same penalty (values >10000 are used for various
   4835     % signals); since we just inserted a non-discardable item, any
   4836     % following glue (such as a \parskip) would be a breakpoint.  For example:
   4837     %   @deffn deffn-whatever
   4838     %   @vindex index-whatever
   4839     %   Description.
   4840     % would allow a break between the index-whatever whatsit
   4841     % and the "Description." paragraph.
   4842     \ifnum\whatsitpenalty>9999 \penalty\whatsitpenalty \fi
   4843   \else
   4844     % On the other hand, if we had a nonzero \lastskip,
   4845     % this make-up glue would be preceded by a non-discardable item
   4846     % (the whatsit from the \write), so we must insert a \nobreak.
   4847     \nobreak\vskip\whatsitskip
   4848   \fi
   4849 \fi}
   4850 
   4851 % The index entry written in the file actually looks like
   4852 %  \entry {sortstring}{page}{topic}
   4853 % or
   4854 %  \entry {sortstring}{page}{topic}{subtopic}
   4855 % The texindex program reads in these files and writes files
   4856 % containing these kinds of lines:
   4857 %  \initial {c}
   4858 %     before the first topic whose initial is c
   4859 %  \entry {topic}{pagelist}
   4860 %     for a topic that is used without subtopics
   4861 %  \primary {topic}
   4862 %     for the beginning of a topic that is used with subtopics
   4863 %  \secondary {subtopic}{pagelist}
   4864 %     for each subtopic.
   4865 
   4866 % Define the user-accessible indexing commands
   4867 % @findex, @vindex, @kindex, @cindex.
   4868 
   4869 \def\findex {\fnindex}
   4870 \def\kindex {\kyindex}
   4871 \def\cindex {\cpindex}
   4872 \def\vindex {\vrindex}
   4873 \def\tindex {\tpindex}
   4874 \def\pindex {\pgindex}
   4875 
   4876 \def\cindexsub {\begingroup\obeylines\cindexsub}
   4877 {\obeylines %
   4878 \gdef\cindexsub "#1" #2^^M{\endgroup %
   4879 \dosubind{cp}{#2}{#1}}}
   4880 
   4881 % Define the macros used in formatting output of the sorted index material.
   4882 
   4883 % @printindex causes a particular index (the ??s file) to get printed.
   4884 % It does not print any chapter heading (usually an @unnumbered).
   4885 %
   4886 \parseargdef\printindex{\begingroup
   4887   \dobreak \chapheadingskip{10000}%
   4888   %
   4889   \smallfonts \rm
   4890   \tolerance = 9500
   4891   \plainfrenchspacing
   4892   \everypar = {}% don't want the \kern\-parindent from indentation suppression.
   4893   %
   4894   % See if the index file exists and is nonempty.
   4895   % Change catcode of @ here so that if the index file contains
   4896   % \initial {@}
   4897   % as its first line, TeX doesn't complain about mismatched braces
   4898   % (because it thinks @} is a control sequence).
   4899   \catcode`\@ = 11
   4900   \openin 1 \jobname.#1s
   4901   \ifeof 1
   4902     % \enddoublecolumns gets confused if there is no text in the index,
   4903     % and it loses the chapter title and the aux file entries for the
   4904     % index.  The easiest way to prevent this problem is to make sure
   4905     % there is some text.
   4906     \putwordIndexNonexistent
   4907   \else
   4908     %
   4909     % If the index file exists but is empty, then \openin leaves \ifeof
   4910     % false.  We have to make TeX try to read something from the file, so
   4911     % it can discover if there is anything in it.
   4912     \read 1 to \temp
   4913     \ifeof 1
   4914       \putwordIndexIsEmpty
   4915     \else
   4916       % Index files are almost Texinfo source, but we use \ as the escape
   4917       % character.  It would be better to use @, but that's too big a change
   4918       % to make right now.
   4919       \def\indexbackslash{\backslashcurfont}%
   4920       \catcode`\\ = 0
   4921       \escapechar = `\\
   4922       \begindoublecolumns
   4923       \input \jobname.#1s
   4924       \enddoublecolumns
   4925     \fi
   4926   \fi
   4927   \closein 1
   4928 \endgroup}
   4929 
   4930 % These macros are used by the sorted index file itself.
   4931 % Change them to control the appearance of the index.
   4932 
   4933 \def\initial#1{{%
   4934   % Some minor font changes for the special characters.
   4935   \let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
   4936   %
   4937   % Remove any glue we may have, we'll be inserting our own.
   4938   \removelastskip
   4939   %
   4940   % We like breaks before the index initials, so insert a bonus.
   4941   \nobreak
   4942   \vskip 0pt plus 3\baselineskip
   4943   \penalty 0
   4944   \vskip 0pt plus -3\baselineskip
   4945   %
   4946   % Typeset the initial.  Making this add up to a whole number of
   4947   % baselineskips increases the chance of the dots lining up from column
   4948   % to column.  It still won't often be perfect, because of the stretch
   4949   % we need before each entry, but it's better.
   4950   %
   4951   % No shrink because it confuses \balancecolumns.
   4952   \vskip 1.67\baselineskip plus .5\baselineskip
   4953   \leftline{\secbf #1}%
   4954   % Do our best not to break after the initial.
   4955   \nobreak
   4956   \vskip .33\baselineskip plus .1\baselineskip
   4957 }}
   4958 
   4959 % \entry typesets a paragraph consisting of the text (#1), dot leaders, and
   4960 % then page number (#2) flushed to the right margin.  It is used for index
   4961 % and table of contents entries.  The paragraph is indented by \leftskip.
   4962 %
   4963 % A straightforward implementation would start like this:
   4964 %	\def\entry#1#2{...
   4965 % But this freezes the catcodes in the argument, and can cause problems to
   4966 % @code, which sets - active.  This problem was fixed by a kludge---
   4967 % ``-'' was active throughout whole index, but this isn't really right.
   4968 % The right solution is to prevent \entry from swallowing the whole text.
   4969 %                                 --kasal, 21nov03
   4970 \def\entry{%
   4971   \begingroup
   4972     %
   4973     % Start a new paragraph if necessary, so our assignments below can't
   4974     % affect previous text.
   4975     \par
   4976     %
   4977     % Do not fill out the last line with white space.
   4978     \parfillskip = 0in
   4979     %
   4980     % No extra space above this paragraph.
   4981     \parskip = 0in
   4982     %
   4983     % Do not prefer a separate line ending with a hyphen to fewer lines.
   4984     \finalhyphendemerits = 0
   4985     %
   4986     % \hangindent is only relevant when the entry text and page number
   4987     % don't both fit on one line.  In that case, bob suggests starting the
   4988     % dots pretty far over on the line.  Unfortunately, a large
   4989     % indentation looks wrong when the entry text itself is broken across
   4990     % lines.  So we use a small indentation and put up with long leaders.
   4991     %
   4992     % \hangafter is reset to 1 (which is the value we want) at the start
   4993     % of each paragraph, so we need not do anything with that.
   4994     \hangindent = 2em
   4995     %
   4996     % When the entry text needs to be broken, just fill out the first line
   4997     % with blank space.
   4998     \rightskip = 0pt plus1fil
   4999     %
   5000     % A bit of stretch before each entry for the benefit of balancing
   5001     % columns.
   5002     \vskip 0pt plus1pt
   5003     %
   5004     % When reading the text of entry, convert explicit line breaks
   5005     % from @* into spaces.  The user might give these in long section
   5006     % titles, for instance.
   5007     \def\*{\unskip\space\ignorespaces}%
   5008     \def\entrybreak{\hfil\break}%
   5009     %
   5010     % Swallow the left brace of the text (first parameter):
   5011     \afterassignment\doentry
   5012     \let\temp =
   5013 }
   5014 \def\entrybreak{\unskip\space\ignorespaces}%
   5015 \def\doentry{%
   5016     \bgroup % Instead of the swallowed brace.
   5017       \noindent
   5018       \aftergroup\finishentry
   5019       % And now comes the text of the entry.
   5020 }
   5021 \def\finishentry#1{%
   5022     % #1 is the page number.
   5023     %
   5024     % The following is kludged to not output a line of dots in the index if
   5025     % there are no page numbers.  The next person who breaks this will be
   5026     % cursed by a Unix daemon.
   5027     \setbox\boxA = \hbox{#1}%
   5028     \ifdim\wd\boxA = 0pt
   5029       \ %
   5030     \else
   5031       %
   5032       % If we must, put the page number on a line of its own, and fill out
   5033       % this line with blank space.  (The \hfil is overwhelmed with the
   5034       % fill leaders glue in \indexdotfill if the page number does fit.)
   5035       \hfil\penalty50
   5036       \null\nobreak\indexdotfill % Have leaders before the page number.
   5037       %
   5038       % The `\ ' here is removed by the implicit \unskip that TeX does as
   5039       % part of (the primitive) \par.  Without it, a spurious underfull
   5040       % \hbox ensues.
   5041       \ifpdf
   5042 	\pdfgettoks#1.%
   5043 	\ \the\toksA
   5044       \else
   5045 	\ #1%
   5046       \fi
   5047     \fi
   5048     \par
   5049   \endgroup
   5050 }
   5051 
   5052 % Like plain.tex's \dotfill, except uses up at least 1 em.
   5053 \def\indexdotfill{\cleaders
   5054   \hbox{$\mathsurround=0pt \mkern1.5mu.\mkern1.5mu$}\hskip 1em plus 1fill}
   5055 
   5056 \def\primary #1{\line{#1\hfil}}
   5057 
   5058 \newskip\secondaryindent \secondaryindent=0.5cm
   5059 \def\secondary#1#2{{%
   5060   \parfillskip=0in
   5061   \parskip=0in
   5062   \hangindent=1in
   5063   \hangafter=1
   5064   \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill
   5065   \ifpdf
   5066     \pdfgettoks#2.\ \the\toksA % The page number ends the paragraph.
   5067   \else
   5068     #2
   5069   \fi
   5070   \par
   5071 }}
   5072 
   5073 % Define two-column mode, which we use to typeset indexes.
   5074 % Adapted from the TeXbook, page 416, which is to say,
   5075 % the manmac.tex format used to print the TeXbook itself.
   5076 \catcode`\@=11
   5077 
   5078 \newbox\partialpage
   5079 \newdimen\doublecolumnhsize
   5080 
   5081 \def\begindoublecolumns{\begingroup % ended by \enddoublecolumns
   5082   % Grab any single-column material above us.
   5083   \output = {%
   5084     %
   5085     % Here is a possibility not foreseen in manmac: if we accumulate a
   5086     % whole lot of material, we might end up calling this \output
   5087     % routine twice in a row (see the doublecol-lose test, which is
   5088     % essentially a couple of indexes with @setchapternewpage off).  In
   5089     % that case we just ship out what is in \partialpage with the normal
   5090     % output routine.  Generally, \partialpage will be empty when this
   5091     % runs and this will be a no-op.  See the indexspread.tex test case.
   5092     \ifvoid\partialpage \else
   5093       \onepageout{\pagecontents\partialpage}%
   5094     \fi
   5095     %
   5096     \global\setbox\partialpage = \vbox{%
   5097       % Unvbox the main output page.
   5098       \unvbox\PAGE
   5099       \kern-\topskip \kern\baselineskip
   5100     }%
   5101   }%
   5102   \eject % run that output routine to set \partialpage
   5103   %
   5104   % Use the double-column output routine for subsequent pages.
   5105   \output = {\doublecolumnout}%
   5106   %
   5107   % Change the page size parameters.  We could do this once outside this
   5108   % routine, in each of @smallbook, @afourpaper, and the default 8.5x11
   5109   % format, but then we repeat the same computation.  Repeating a couple
   5110   % of assignments once per index is clearly meaningless for the
   5111   % execution time, so we may as well do it in one place.
   5112   %
   5113   % First we halve the line length, less a little for the gutter between
   5114   % the columns.  We compute the gutter based on the line length, so it
   5115   % changes automatically with the paper format.  The magic constant
   5116   % below is chosen so that the gutter has the same value (well, +-<1pt)
   5117   % as it did when we hard-coded it.
   5118   %
   5119   % We put the result in a separate register, \doublecolumhsize, so we
   5120   % can restore it in \pagesofar, after \hsize itself has (potentially)
   5121   % been clobbered.
   5122   %
   5123   \doublecolumnhsize = \hsize
   5124     \advance\doublecolumnhsize by -.04154\hsize
   5125     \divide\doublecolumnhsize by 2
   5126   \hsize = \doublecolumnhsize
   5127   %
   5128   % Double the \vsize as well.  (We don't need a separate register here,
   5129   % since nobody clobbers \vsize.)
   5130   \vsize = 2\vsize
   5131 }
   5132 
   5133 % The double-column output routine for all double-column pages except
   5134 % the last.
   5135 %
   5136 \def\doublecolumnout{%
   5137   \splittopskip=\topskip \splitmaxdepth=\maxdepth
   5138   % Get the available space for the double columns -- the normal
   5139   % (undoubled) page height minus any material left over from the
   5140   % previous page.
   5141   \dimen@ = \vsize
   5142   \divide\dimen@ by 2
   5143   \advance\dimen@ by -\ht\partialpage
   5144   %
   5145   % box0 will be the left-hand column, box2 the right.
   5146   \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
   5147   \onepageout\pagesofar
   5148   \unvbox255
   5149   \penalty\outputpenalty
   5150 }
   5151 %
   5152 % Re-output the contents of the output page -- any previous material,
   5153 % followed by the two boxes we just split, in box0 and box2.
   5154 \def\pagesofar{%
   5155   \unvbox\partialpage
   5156   %
   5157   \hsize = \doublecolumnhsize
   5158   \wd0=\hsize \wd2=\hsize
   5159   \hbox to\pagewidth{\box0\hfil\box2}%
   5160 }
   5161 %
   5162 % All done with double columns.
   5163 \def\enddoublecolumns{%
   5164   % The following penalty ensures that the page builder is exercised
   5165   % _before_ we change the output routine.  This is necessary in the
   5166   % following situation:
   5167   %
   5168   % The last section of the index consists only of a single entry.
   5169   % Before this section, \pagetotal is less than \pagegoal, so no
   5170   % break occurs before the last section starts.  However, the last
   5171   % section, consisting of \initial and the single \entry, does not
   5172   % fit on the page and has to be broken off.  Without the following
   5173   % penalty the page builder will not be exercised until \eject
   5174   % below, and by that time we'll already have changed the output
   5175   % routine to the \balancecolumns version, so the next-to-last
   5176   % double-column page will be processed with \balancecolumns, which
   5177   % is wrong:  The two columns will go to the main vertical list, with
   5178   % the broken-off section in the recent contributions.  As soon as
   5179   % the output routine finishes, TeX starts reconsidering the page
   5180   % break.  The two columns and the broken-off section both fit on the
   5181   % page, because the two columns now take up only half of the page
   5182   % goal.  When TeX sees \eject from below which follows the final
   5183   % section, it invokes the new output routine that we've set after
   5184   % \balancecolumns below; \onepageout will try to fit the two columns
   5185   % and the final section into the vbox of \pageheight (see
   5186   % \pagebody), causing an overfull box.
   5187   %
   5188   % Note that glue won't work here, because glue does not exercise the
   5189   % page builder, unlike penalties (see The TeXbook, pp. 280-281).
   5190   \penalty0
   5191   %
   5192   \output = {%
   5193     % Split the last of the double-column material.  Leave it on the
   5194     % current page, no automatic page break.
   5195     \balancecolumns
   5196     %
   5197     % If we end up splitting too much material for the current page,
   5198     % though, there will be another page break right after this \output
   5199     % invocation ends.  Having called \balancecolumns once, we do not
   5200     % want to call it again.  Therefore, reset \output to its normal
   5201     % definition right away.  (We hope \balancecolumns will never be
   5202     % called on to balance too much material, but if it is, this makes
   5203     % the output somewhat more palatable.)
   5204     \global\output = {\onepageout{\pagecontents\PAGE}}%
   5205   }%
   5206   \eject
   5207   \endgroup % started in \begindoublecolumns
   5208   %
   5209   % \pagegoal was set to the doubled \vsize above, since we restarted
   5210   % the current page.  We're now back to normal single-column
   5211   % typesetting, so reset \pagegoal to the normal \vsize (after the
   5212   % \endgroup where \vsize got restored).
   5213   \pagegoal = \vsize
   5214 }
   5215 %
   5216 % Called at the end of the double column material.
   5217 \def\balancecolumns{%
   5218   \setbox0 = \vbox{\unvbox255}% like \box255 but more efficient, see p.120.
   5219   \dimen@ = \ht0
   5220   \advance\dimen@ by \topskip
   5221   \advance\dimen@ by-\baselineskip
   5222   \divide\dimen@ by 2 % target to split to
   5223   %debug\message{final 2-column material height=\the\ht0, target=\the\dimen@.}%
   5224   \splittopskip = \topskip
   5225   % Loop until we get a decent breakpoint.
   5226   {%
   5227     \vbadness = 10000
   5228     \loop
   5229       \global\setbox3 = \copy0
   5230       \global\setbox1 = \vsplit3 to \dimen@
   5231     \ifdim\ht3>\dimen@
   5232       \global\advance\dimen@ by 1pt
   5233     \repeat
   5234   }%
   5235   %debug\message{split to \the\dimen@, column heights: \the\ht1, \the\ht3.}%
   5236   \setbox0=\vbox to\dimen@{\unvbox1}%
   5237   \setbox2=\vbox to\dimen@{\unvbox3}%
   5238   %
   5239   \pagesofar
   5240 }
   5241 \catcode`\@ = \other
   5242 
   5243 
   5244 \message{sectioning,}
   5245 % Chapters, sections, etc.
   5246 
   5247 % Let's start with @part.
   5248 \outer\parseargdef\part{\partzzz{#1}}
   5249 \def\partzzz#1{%
   5250   \chapoddpage
   5251   \null
   5252   \vskip.3\vsize  % move it down on the page a bit
   5253   \begingroup
   5254     \noindent \titlefonts\rmisbold #1\par % the text
   5255     \let\lastnode=\empty      % no node to associate with
   5256     \writetocentry{part}{#1}{}% but put it in the toc
   5257     \headingsoff              % no headline or footline on the part page
   5258     \chapoddpage
   5259   \endgroup
   5260 }
   5261 
   5262 % \unnumberedno is an oxymoron.  But we count the unnumbered
   5263 % sections so that we can refer to them unambiguously in the pdf
   5264 % outlines by their "section number".  We avoid collisions with chapter
   5265 % numbers by starting them at 10000.  (If a document ever has 10000
   5266 % chapters, we're in trouble anyway, I'm sure.)
   5267 \newcount\unnumberedno \unnumberedno = 10000
   5268 \newcount\chapno
   5269 \newcount\secno        \secno=0
   5270 \newcount\subsecno     \subsecno=0
   5271 \newcount\subsubsecno  \subsubsecno=0
   5272 
   5273 % This counter is funny since it counts through charcodes of letters A, B, ...
   5274 \newcount\appendixno  \appendixno = `\@
   5275 %
   5276 % \def\appendixletter{\char\the\appendixno}
   5277 % We do the following ugly conditional instead of the above simple
   5278 % construct for the sake of pdftex, which needs the actual
   5279 % letter in the expansion, not just typeset.
   5280 %
   5281 \def\appendixletter{%
   5282   \ifnum\appendixno=`A A%
   5283   \else\ifnum\appendixno=`B B%
   5284   \else\ifnum\appendixno=`C C%
   5285   \else\ifnum\appendixno=`D D%
   5286   \else\ifnum\appendixno=`E E%
   5287   \else\ifnum\appendixno=`F F%
   5288   \else\ifnum\appendixno=`G G%
   5289   \else\ifnum\appendixno=`H H%
   5290   \else\ifnum\appendixno=`I I%
   5291   \else\ifnum\appendixno=`J J%
   5292   \else\ifnum\appendixno=`K K%
   5293   \else\ifnum\appendixno=`L L%
   5294   \else\ifnum\appendixno=`M M%
   5295   \else\ifnum\appendixno=`N N%
   5296   \else\ifnum\appendixno=`O O%
   5297   \else\ifnum\appendixno=`P P%
   5298   \else\ifnum\appendixno=`Q Q%
   5299   \else\ifnum\appendixno=`R R%
   5300   \else\ifnum\appendixno=`S S%
   5301   \else\ifnum\appendixno=`T T%
   5302   \else\ifnum\appendixno=`U U%
   5303   \else\ifnum\appendixno=`V V%
   5304   \else\ifnum\appendixno=`W W%
   5305   \else\ifnum\appendixno=`X X%
   5306   \else\ifnum\appendixno=`Y Y%
   5307   \else\ifnum\appendixno=`Z Z%
   5308   % The \the is necessary, despite appearances, because \appendixletter is
   5309   % expanded while writing the .toc file.  \char\appendixno is not
   5310   % expandable, thus it is written literally, thus all appendixes come out
   5311   % with the same letter (or @) in the toc without it.
   5312   \else\char\the\appendixno
   5313   \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
   5314   \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi}
   5315 
   5316 % Each @chapter defines these (using marks) as the number+name, number
   5317 % and name of the chapter.  Page headings and footings can use
   5318 % these.  @section does likewise.
   5319 \def\thischapter{}
   5320 \def\thischapternum{}
   5321 \def\thischaptername{}
   5322 \def\thissection{}
   5323 \def\thissectionnum{}
   5324 \def\thissectionname{}
   5325 
   5326 \newcount\absseclevel % used to calculate proper heading level
   5327 \newcount\secbase\secbase=0 % @raisesections/@lowersections modify this count
   5328 
   5329 % @raisesections: treat @section as chapter, @subsection as section, etc.
   5330 \def\raisesections{\global\advance\secbase by -1}
   5331 \let\up=\raisesections % original BFox name
   5332 
   5333 % @lowersections: treat @chapter as section, @section as subsection, etc.
   5334 \def\lowersections{\global\advance\secbase by 1}
   5335 \let\down=\lowersections % original BFox name
   5336 
   5337 % we only have subsub.
   5338 \chardef\maxseclevel = 3
   5339 %
   5340 % A numbered section within an unnumbered changes to unnumbered too.
   5341 % To achieve this, remember the "biggest" unnum. sec. we are currently in:
   5342 \chardef\unnlevel = \maxseclevel
   5343 %
   5344 % Trace whether the current chapter is an appendix or not:
   5345 % \chapheadtype is "N" or "A", unnumbered chapters are ignored.
   5346 \def\chapheadtype{N}
   5347 
   5348 % Choose a heading macro
   5349 % #1 is heading type
   5350 % #2 is heading level
   5351 % #3 is text for heading
   5352 \def\genhead#1#2#3{%
   5353   % Compute the abs. sec. level:
   5354   \absseclevel=#2
   5355   \advance\absseclevel by \secbase
   5356   % Make sure \absseclevel doesn't fall outside the range:
   5357   \ifnum \absseclevel < 0
   5358     \absseclevel = 0
   5359   \else
   5360     \ifnum \absseclevel > 3
   5361       \absseclevel = 3
   5362     \fi
   5363   \fi
   5364   % The heading type:
   5365   \def\headtype{#1}%
   5366   \if \headtype U%
   5367     \ifnum \absseclevel < \unnlevel
   5368       \chardef\unnlevel = \absseclevel
   5369     \fi
   5370   \else
   5371     % Check for appendix sections:
   5372     \ifnum \absseclevel = 0
   5373       \edef\chapheadtype{\headtype}%
   5374     \else
   5375       \if \headtype A\if \chapheadtype N%
   5376 	\errmessage{@appendix... within a non-appendix chapter}%
   5377       \fi\fi
   5378     \fi
   5379     % Check for numbered within unnumbered:
   5380     \ifnum \absseclevel > \unnlevel
   5381       \def\headtype{U}%
   5382     \else
   5383       \chardef\unnlevel = 3
   5384     \fi
   5385   \fi
   5386   % Now print the heading:
   5387   \if \headtype U%
   5388     \ifcase\absseclevel
   5389 	\unnumberedzzz{#3}%
   5390     \or \unnumberedseczzz{#3}%
   5391     \or \unnumberedsubseczzz{#3}%
   5392     \or \unnumberedsubsubseczzz{#3}%
   5393     \fi
   5394   \else
   5395     \if \headtype A%
   5396       \ifcase\absseclevel
   5397 	  \appendixzzz{#3}%
   5398       \or \appendixsectionzzz{#3}%
   5399       \or \appendixsubseczzz{#3}%
   5400       \or \appendixsubsubseczzz{#3}%
   5401       \fi
   5402     \else
   5403       \ifcase\absseclevel
   5404 	  \chapterzzz{#3}%
   5405       \or \seczzz{#3}%
   5406       \or \numberedsubseczzz{#3}%
   5407       \or \numberedsubsubseczzz{#3}%
   5408       \fi
   5409     \fi
   5410   \fi
   5411   \suppressfirstparagraphindent
   5412 }
   5413 
   5414 % an interface:
   5415 \def\numhead{\genhead N}
   5416 \def\apphead{\genhead A}
   5417 \def\unnmhead{\genhead U}
   5418 
   5419 % @chapter, @appendix, @unnumbered.  Increment top-level counter, reset
   5420 % all lower-level sectioning counters to zero.
   5421 %
   5422 % Also set \chaplevelprefix, which we prepend to @float sequence numbers
   5423 % (e.g., figures), q.v.  By default (before any chapter), that is empty.
   5424 \let\chaplevelprefix = \empty
   5425 %
   5426 \outer\parseargdef\chapter{\numhead0{#1}} % normally numhead0 calls chapterzzz
   5427 \def\chapterzzz#1{%
   5428   % section resetting is \global in case the chapter is in a group, such
   5429   % as an @include file.
   5430   \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
   5431     \global\advance\chapno by 1
   5432   %
   5433   % Used for \float.
   5434   \gdef\chaplevelprefix{\the\chapno.}%
   5435   \resetallfloatnos
   5436   %
   5437   % \putwordChapter can contain complex things in translations.
   5438   \toks0=\expandafter{\putwordChapter}%
   5439   \message{\the\toks0 \space \the\chapno}%
   5440   %
   5441   % Write the actual heading.
   5442   \chapmacro{#1}{Ynumbered}{\the\chapno}%
   5443   %
   5444   % So @section and the like are numbered underneath this chapter.
   5445   \global\let\section = \numberedsec
   5446   \global\let\subsection = \numberedsubsec
   5447   \global\let\subsubsection = \numberedsubsubsec
   5448 }
   5449 
   5450 \outer\parseargdef\appendix{\apphead0{#1}} % normally calls appendixzzz
   5451 %
   5452 \def\appendixzzz#1{%
   5453   \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
   5454     \global\advance\appendixno by 1
   5455   \gdef\chaplevelprefix{\appendixletter.}%
   5456   \resetallfloatnos
   5457   %
   5458   % \putwordAppendix can contain complex things in translations.
   5459   \toks0=\expandafter{\putwordAppendix}%
   5460   \message{\the\toks0 \space \appendixletter}%
   5461   %
   5462   \chapmacro{#1}{Yappendix}{\appendixletter}%
   5463   %
   5464   \global\let\section = \appendixsec
   5465   \global\let\subsection = \appendixsubsec
   5466   \global\let\subsubsection = \appendixsubsubsec
   5467 }
   5468 
   5469 % normally unnmhead0 calls unnumberedzzz:
   5470 \outer\parseargdef\unnumbered{\unnmhead0{#1}}
   5471 \def\unnumberedzzz#1{%
   5472   \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
   5473     \global\advance\unnumberedno by 1
   5474   %
   5475   % Since an unnumbered has no number, no prefix for figures.
   5476   \global\let\chaplevelprefix = \empty
   5477   \resetallfloatnos
   5478   %
   5479   % This used to be simply \message{#1}, but TeX fully expands the
   5480   % argument to \message.  Therefore, if #1 contained @-commands, TeX
   5481   % expanded them.  For example, in `@unnumbered The @cite{Book}', TeX
   5482   % expanded @cite (which turns out to cause errors because \cite is meant
   5483   % to be executed, not expanded).
   5484   %
   5485   % Anyway, we don't want the fully-expanded definition of @cite to appear
   5486   % as a result of the \message, we just want `@cite' itself.  We use
   5487   % \the<toks register> to achieve this: TeX expands \the<toks> only once,
   5488   % simply yielding the contents of <toks register>.  (We also do this for
   5489   % the toc entries.)
   5490   \toks0 = {#1}%
   5491   \message{(\the\toks0)}%
   5492   %
   5493   \chapmacro{#1}{Ynothing}{\the\unnumberedno}%
   5494   %
   5495   \global\let\section = \unnumberedsec
   5496   \global\let\subsection = \unnumberedsubsec
   5497   \global\let\subsubsection = \unnumberedsubsubsec
   5498 }
   5499 
   5500 % @centerchap is like @unnumbered, but the heading is centered.
   5501 \outer\parseargdef\centerchap{%
   5502   % Well, we could do the following in a group, but that would break
   5503   % an assumption that \chapmacro is called at the outermost level.
   5504   % Thus we are safer this way:		--kasal, 24feb04
   5505   \let\centerparametersmaybe = \centerparameters
   5506   \unnmhead0{#1}%
   5507   \let\centerparametersmaybe = \relax
   5508 }
   5509 
   5510 % @top is like @unnumbered.
   5511 \let\top\unnumbered
   5512 
   5513 % Sections.
   5514 % 
   5515 \outer\parseargdef\numberedsec{\numhead1{#1}} % normally calls seczzz
   5516 \def\seczzz#1{%
   5517   \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
   5518   \sectionheading{#1}{sec}{Ynumbered}{\the\chapno.\the\secno}%
   5519 }
   5520 
   5521 % normally calls appendixsectionzzz:
   5522 \outer\parseargdef\appendixsection{\apphead1{#1}}
   5523 \def\appendixsectionzzz#1{%
   5524   \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
   5525   \sectionheading{#1}{sec}{Yappendix}{\appendixletter.\the\secno}%
   5526 }
   5527 \let\appendixsec\appendixsection
   5528 
   5529 % normally calls unnumberedseczzz:
   5530 \outer\parseargdef\unnumberedsec{\unnmhead1{#1}}
   5531 \def\unnumberedseczzz#1{%
   5532   \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
   5533   \sectionheading{#1}{sec}{Ynothing}{\the\unnumberedno.\the\secno}%
   5534 }
   5535 
   5536 % Subsections.
   5537 % 
   5538 % normally calls numberedsubseczzz:
   5539 \outer\parseargdef\numberedsubsec{\numhead2{#1}}
   5540 \def\numberedsubseczzz#1{%
   5541   \global\subsubsecno=0  \global\advance\subsecno by 1
   5542   \sectionheading{#1}{subsec}{Ynumbered}{\the\chapno.\the\secno.\the\subsecno}%
   5543 }
   5544 
   5545 % normally calls appendixsubseczzz:
   5546 \outer\parseargdef\appendixsubsec{\apphead2{#1}}
   5547 \def\appendixsubseczzz#1{%
   5548   \global\subsubsecno=0  \global\advance\subsecno by 1
   5549   \sectionheading{#1}{subsec}{Yappendix}%
   5550                  {\appendixletter.\the\secno.\the\subsecno}%
   5551 }
   5552 
   5553 % normally calls unnumberedsubseczzz:
   5554 \outer\parseargdef\unnumberedsubsec{\unnmhead2{#1}}
   5555 \def\unnumberedsubseczzz#1{%
   5556   \global\subsubsecno=0  \global\advance\subsecno by 1
   5557   \sectionheading{#1}{subsec}{Ynothing}%
   5558                  {\the\unnumberedno.\the\secno.\the\subsecno}%
   5559 }
   5560 
   5561 % Subsubsections.
   5562 % 
   5563 % normally numberedsubsubseczzz:
   5564 \outer\parseargdef\numberedsubsubsec{\numhead3{#1}}
   5565 \def\numberedsubsubseczzz#1{%
   5566   \global\advance\subsubsecno by 1
   5567   \sectionheading{#1}{subsubsec}{Ynumbered}%
   5568                  {\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno}%
   5569 }
   5570 
   5571 % normally appendixsubsubseczzz:
   5572 \outer\parseargdef\appendixsubsubsec{\apphead3{#1}}
   5573 \def\appendixsubsubseczzz#1{%
   5574   \global\advance\subsubsecno by 1
   5575   \sectionheading{#1}{subsubsec}{Yappendix}%
   5576                  {\appendixletter.\the\secno.\the\subsecno.\the\subsubsecno}%
   5577 }
   5578 
   5579 % normally unnumberedsubsubseczzz:
   5580 \outer\parseargdef\unnumberedsubsubsec{\unnmhead3{#1}}
   5581 \def\unnumberedsubsubseczzz#1{%
   5582   \global\advance\subsubsecno by 1
   5583   \sectionheading{#1}{subsubsec}{Ynothing}%
   5584                  {\the\unnumberedno.\the\secno.\the\subsecno.\the\subsubsecno}%
   5585 }
   5586 
   5587 % These macros control what the section commands do, according
   5588 % to what kind of chapter we are in (ordinary, appendix, or unnumbered).
   5589 % Define them by default for a numbered chapter.
   5590 \let\section = \numberedsec
   5591 \let\subsection = \numberedsubsec
   5592 \let\subsubsection = \numberedsubsubsec
   5593 
   5594 % Define @majorheading, @heading and @subheading
   5595 
   5596 \def\majorheading{%
   5597   {\advance\chapheadingskip by 10pt \chapbreak }%
   5598   \parsearg\chapheadingzzz
   5599 }
   5600 
   5601 \def\chapheading{\chapbreak \parsearg\chapheadingzzz}
   5602 \def\chapheadingzzz#1{%
   5603   \vbox{\chapfonts \raggedtitlesettings #1\par}%
   5604   \nobreak\bigskip \nobreak
   5605   \suppressfirstparagraphindent
   5606 }
   5607 
   5608 % @heading, @subheading, @subsubheading.
   5609 \parseargdef\heading{\sectionheading{#1}{sec}{Yomitfromtoc}{}
   5610   \suppressfirstparagraphindent}
   5611 \parseargdef\subheading{\sectionheading{#1}{subsec}{Yomitfromtoc}{}
   5612   \suppressfirstparagraphindent}
   5613 \parseargdef\subsubheading{\sectionheading{#1}{subsubsec}{Yomitfromtoc}{}
   5614   \suppressfirstparagraphindent}
   5615 
   5616 % These macros generate a chapter, section, etc. heading only
   5617 % (including whitespace, linebreaking, etc. around it),
   5618 % given all the information in convenient, parsed form.
   5619 
   5620 % Args are the skip and penalty (usually negative)
   5621 \def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
   5622 
   5623 % Parameter controlling skip before chapter headings (if needed)
   5624 \newskip\chapheadingskip
   5625 
   5626 % Define plain chapter starts, and page on/off switching for it.
   5627 \def\chapbreak{\dobreak \chapheadingskip {-4000}}
   5628 \def\chappager{\par\vfill\supereject}
   5629 % Because \domark is called before \chapoddpage, the filler page will
   5630 % get the headings for the next chapter, which is wrong.  But we don't
   5631 % care -- we just disable all headings on the filler page.
   5632 \def\chapoddpage{%
   5633   \chappager
   5634   \ifodd\pageno \else
   5635     \begingroup
   5636       \headingsoff
   5637       \null
   5638       \chappager
   5639     \endgroup
   5640   \fi
   5641 }
   5642 
   5643 \def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
   5644 
   5645 \def\CHAPPAGoff{%
   5646 \global\let\contentsalignmacro = \chappager
   5647 \global\let\pchapsepmacro=\chapbreak
   5648 \global\let\pagealignmacro=\chappager}
   5649 
   5650 \def\CHAPPAGon{%
   5651 \global\let\contentsalignmacro = \chappager
   5652 \global\let\pchapsepmacro=\chappager
   5653 \global\let\pagealignmacro=\chappager
   5654 \global\def\HEADINGSon{\HEADINGSsingle}}
   5655 
   5656 \def\CHAPPAGodd{%
   5657 \global\let\contentsalignmacro = \chapoddpage
   5658 \global\let\pchapsepmacro=\chapoddpage
   5659 \global\let\pagealignmacro=\chapoddpage
   5660 \global\def\HEADINGSon{\HEADINGSdouble}}
   5661 
   5662 \CHAPPAGon
   5663 
   5664 % Chapter opening.
   5665 %
   5666 % #1 is the text, #2 is the section type (Ynumbered, Ynothing,
   5667 % Yappendix, Yomitfromtoc), #3 the chapter number.
   5668 %
   5669 % To test against our argument.
   5670 \def\Ynothingkeyword{Ynothing}
   5671 \def\Yomitfromtockeyword{Yomitfromtoc}
   5672 \def\Yappendixkeyword{Yappendix}
   5673 %
   5674 \def\chapmacro#1#2#3{%
   5675   % Insert the first mark before the heading break (see notes for \domark).
   5676   \let\prevchapterdefs=\lastchapterdefs
   5677   \let\prevsectiondefs=\lastsectiondefs
   5678   \gdef\lastsectiondefs{\gdef\thissectionname{}\gdef\thissectionnum{}%
   5679                         \gdef\thissection{}}%
   5680   %
   5681   \def\temptype{#2}%
   5682   \ifx\temptype\Ynothingkeyword
   5683     \gdef\lastchapterdefs{\gdef\thischaptername{#1}\gdef\thischapternum{}%
   5684                           \gdef\thischapter{\thischaptername}}%
   5685   \else\ifx\temptype\Yomitfromtockeyword
   5686     \gdef\lastchapterdefs{\gdef\thischaptername{#1}\gdef\thischapternum{}%
   5687                           \gdef\thischapter{}}%
   5688   \else\ifx\temptype\Yappendixkeyword
   5689     \toks0={#1}%
   5690     \xdef\lastchapterdefs{%
   5691       \gdef\noexpand\thischaptername{\the\toks0}%
   5692       \gdef\noexpand\thischapternum{\appendixletter}%
   5693       % \noexpand\putwordAppendix avoids expanding indigestible
   5694       % commands in some of the translations.
   5695       \gdef\noexpand\thischapter{\noexpand\putwordAppendix{}
   5696                                  \noexpand\thischapternum:
   5697                                  \noexpand\thischaptername}%
   5698     }%
   5699   \else
   5700     \toks0={#1}%
   5701     \xdef\lastchapterdefs{%
   5702       \gdef\noexpand\thischaptername{\the\toks0}%
   5703       \gdef\noexpand\thischapternum{\the\chapno}%
   5704       % \noexpand\putwordChapter avoids expanding indigestible
   5705       % commands in some of the translations.
   5706       \gdef\noexpand\thischapter{\noexpand\putwordChapter{}
   5707                                  \noexpand\thischapternum:
   5708                                  \noexpand\thischaptername}%
   5709     }%
   5710   \fi\fi\fi
   5711   %
   5712   % Output the mark.  Pass it through \safewhatsit, to take care of
   5713   % the preceding space.
   5714   \safewhatsit\domark
   5715   %
   5716   % Insert the chapter heading break.
   5717   \pchapsepmacro
   5718   %
   5719   % Now the second mark, after the heading break.  No break points
   5720   % between here and the heading.
   5721   \let\prevchapterdefs=\lastchapterdefs
   5722   \let\prevsectiondefs=\lastsectiondefs
   5723   \domark
   5724   %
   5725   {%
   5726     \chapfonts \rmisbold
   5727     %
   5728     % Have to define \lastsection before calling \donoderef, because the
   5729     % xref code eventually uses it.  On the other hand, it has to be called
   5730     % after \pchapsepmacro, or the headline will change too soon.
   5731     \gdef\lastsection{#1}%
   5732     %
   5733     % Only insert the separating space if we have a chapter/appendix
   5734     % number, and don't print the unnumbered ``number''.
   5735     \ifx\temptype\Ynothingkeyword
   5736       \setbox0 = \hbox{}%
   5737       \def\toctype{unnchap}%
   5738     \else\ifx\temptype\Yomitfromtockeyword
   5739       \setbox0 = \hbox{}% contents like unnumbered, but no toc entry
   5740       \def\toctype{omit}%
   5741     \else\ifx\temptype\Yappendixkeyword
   5742       \setbox0 = \hbox{\putwordAppendix{} #3\enspace}%
   5743       \def\toctype{app}%
   5744     \else
   5745       \setbox0 = \hbox{#3\enspace}%
   5746       \def\toctype{numchap}%
   5747     \fi\fi\fi
   5748     %
   5749     % Write the toc entry for this chapter.  Must come before the
   5750     % \donoderef, because we include the current node name in the toc
   5751     % entry, and \donoderef resets it to empty.
   5752     \writetocentry{\toctype}{#1}{#3}%
   5753     %
   5754     % For pdftex, we have to write out the node definition (aka, make
   5755     % the pdfdest) after any page break, but before the actual text has
   5756     % been typeset.  If the destination for the pdf outline is after the
   5757     % text, then jumping from the outline may wind up with the text not
   5758     % being visible, for instance under high magnification.
   5759     \donoderef{#2}%
   5760     %
   5761     % Typeset the actual heading.
   5762     \nobreak % Avoid page breaks at the interline glue.
   5763     \vbox{\raggedtitlesettings \hangindent=\wd0 \centerparametersmaybe
   5764           \unhbox0 #1\par}%
   5765   }%
   5766   \nobreak\bigskip % no page break after a chapter title
   5767   \nobreak
   5768 }
   5769 
   5770 % @centerchap -- centered and unnumbered.
   5771 \let\centerparametersmaybe = \relax
   5772 \def\centerparameters{%
   5773   \advance\rightskip by 3\rightskip
   5774   \leftskip = \rightskip
   5775   \parfillskip = 0pt
   5776 }
   5777 
   5778 
   5779 % I don't think this chapter style is supported any more, so I'm not
   5780 % updating it with the new noderef stuff.  We'll see.  --karl, 11aug03.
   5781 %
   5782 \def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
   5783 %
   5784 \def\unnchfopen #1{%
   5785   \chapoddpage
   5786   \vbox{\chapfonts \raggedtitlesettings #1\par}%
   5787   \nobreak\bigskip\nobreak
   5788 }
   5789 \def\chfopen #1#2{\chapoddpage {\chapfonts
   5790 \vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
   5791 \par\penalty 5000 %
   5792 }
   5793 \def\centerchfopen #1{%
   5794   \chapoddpage
   5795   \vbox{\chapfonts \raggedtitlesettings \hfill #1\hfill}%
   5796   \nobreak\bigskip \nobreak
   5797 }
   5798 \def\CHAPFopen{%
   5799   \global\let\chapmacro=\chfopen
   5800   \global\let\centerchapmacro=\centerchfopen}
   5801 
   5802 
   5803 % Section titles.  These macros combine the section number parts and
   5804 % call the generic \sectionheading to do the printing.
   5805 %
   5806 \newskip\secheadingskip
   5807 \def\secheadingbreak{\dobreak \secheadingskip{-1000}}
   5808 
   5809 % Subsection titles.
   5810 \newskip\subsecheadingskip
   5811 \def\subsecheadingbreak{\dobreak \subsecheadingskip{-500}}
   5812 
   5813 % Subsubsection titles.
   5814 \def\subsubsecheadingskip{\subsecheadingskip}
   5815 \def\subsubsecheadingbreak{\subsecheadingbreak}
   5816 
   5817 
   5818 % Print any size, any type, section title.
   5819 %
   5820 % #1 is the text, #2 is the section level (sec/subsec/subsubsec), #3 is
   5821 % the section type for xrefs (Ynumbered, Ynothing, Yappendix), #4 is the
   5822 % section number.
   5823 %
   5824 \def\seckeyword{sec}
   5825 %
   5826 \def\sectionheading#1#2#3#4{%
   5827   {%
   5828     \checkenv{}% should not be in an environment.
   5829     %
   5830     % Switch to the right set of fonts.
   5831     \csname #2fonts\endcsname \rmisbold
   5832     %
   5833     \def\sectionlevel{#2}%
   5834     \def\temptype{#3}%
   5835     %
   5836     % Insert first mark before the heading break (see notes for \domark).
   5837     \let\prevsectiondefs=\lastsectiondefs
   5838     \ifx\temptype\Ynothingkeyword
   5839       \ifx\sectionlevel\seckeyword
   5840         \gdef\lastsectiondefs{\gdef\thissectionname{#1}\gdef\thissectionnum{}%
   5841                               \gdef\thissection{\thissectionname}}%
   5842       \fi
   5843     \else\ifx\temptype\Yomitfromtockeyword
   5844       % Don't redefine \thissection.
   5845     \else\ifx\temptype\Yappendixkeyword
   5846       \ifx\sectionlevel\seckeyword
   5847         \toks0={#1}%
   5848         \xdef\lastsectiondefs{%
   5849           \gdef\noexpand\thissectionname{\the\toks0}%
   5850           \gdef\noexpand\thissectionnum{#4}%
   5851           % \noexpand\putwordSection avoids expanding indigestible
   5852           % commands in some of the translations.
   5853           \gdef\noexpand\thissection{\noexpand\putwordSection{}
   5854                                      \noexpand\thissectionnum:
   5855                                      \noexpand\thissectionname}%
   5856         }%
   5857       \fi
   5858     \else
   5859       \ifx\sectionlevel\seckeyword
   5860         \toks0={#1}%
   5861         \xdef\lastsectiondefs{%
   5862           \gdef\noexpand\thissectionname{\the\toks0}%
   5863           \gdef\noexpand\thissectionnum{#4}%
   5864           % \noexpand\putwordSection avoids expanding indigestible
   5865           % commands in some of the translations.
   5866           \gdef\noexpand\thissection{\noexpand\putwordSection{}
   5867                                      \noexpand\thissectionnum:
   5868                                      \noexpand\thissectionname}%
   5869         }%
   5870       \fi
   5871     \fi\fi\fi
   5872     %
   5873     % Go into vertical mode.  Usually we'll already be there, but we
   5874     % don't want the following whatsit to end up in a preceding paragraph
   5875     % if the document didn't happen to have a blank line.
   5876     \par
   5877     %
   5878     % Output the mark.  Pass it through \safewhatsit, to take care of
   5879     % the preceding space.
   5880     \safewhatsit\domark
   5881     %
   5882     % Insert space above the heading.
   5883     \csname #2headingbreak\endcsname
   5884     %
   5885     % Now the second mark, after the heading break.  No break points
   5886     % between here and the heading.
   5887     \let\prevsectiondefs=\lastsectiondefs
   5888     \domark
   5889     %
   5890     % Only insert the space after the number if we have a section number.
   5891     \ifx\temptype\Ynothingkeyword
   5892       \setbox0 = \hbox{}%
   5893       \def\toctype{unn}%
   5894       \gdef\lastsection{#1}%
   5895     \else\ifx\temptype\Yomitfromtockeyword
   5896       % for @headings -- no section number, don't include in toc,
   5897       % and don't redefine \lastsection.
   5898       \setbox0 = \hbox{}%
   5899       \def\toctype{omit}%
   5900       \let\sectionlevel=\empty
   5901     \else\ifx\temptype\Yappendixkeyword
   5902       \setbox0 = \hbox{#4\enspace}%
   5903       \def\toctype{app}%
   5904       \gdef\lastsection{#1}%
   5905     \else
   5906       \setbox0 = \hbox{#4\enspace}%
   5907       \def\toctype{num}%
   5908       \gdef\lastsection{#1}%
   5909     \fi\fi\fi
   5910     %
   5911     % Write the toc entry (before \donoderef).  See comments in \chapmacro.
   5912     \writetocentry{\toctype\sectionlevel}{#1}{#4}%
   5913     %
   5914     % Write the node reference (= pdf destination for pdftex).
   5915     % Again, see comments in \chapmacro.
   5916     \donoderef{#3}%
   5917     %
   5918     % Interline glue will be inserted when the vbox is completed.
   5919     % That glue will be a valid breakpoint for the page, since it'll be
   5920     % preceded by a whatsit (usually from the \donoderef, or from the
   5921     % \writetocentry if there was no node).  We don't want to allow that
   5922     % break, since then the whatsits could end up on page n while the
   5923     % section is on page n+1, thus toc/etc. are wrong.  Debian bug 276000.
   5924     \nobreak
   5925     %
   5926     % Output the actual section heading.
   5927     \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \ptexraggedright
   5928           \hangindent=\wd0  % zero if no section number
   5929           \unhbox0 #1}%
   5930   }%
   5931   % Add extra space after the heading -- half of whatever came above it.
   5932   % Don't allow stretch, though.
   5933   \kern .5 \csname #2headingskip\endcsname
   5934   %
   5935   % Do not let the kern be a potential breakpoint, as it would be if it
   5936   % was followed by glue.
   5937   \nobreak
   5938   %
   5939   % We'll almost certainly start a paragraph next, so don't let that
   5940   % glue accumulate.  (Not a breakpoint because it's preceded by a
   5941   % discardable item.)  However, when a paragraph is not started next
   5942   % (\startdefun, \cartouche, \center, etc.), this needs to be wiped out
   5943   % or the negative glue will cause weirdly wrong output, typically
   5944   % obscuring the section heading with something else.
   5945   \vskip-\parskip
   5946   %
   5947   % This is so the last item on the main vertical list is a known
   5948   % \penalty > 10000, so \startdefun, etc., can recognize the situation
   5949   % and do the needful.
   5950   \penalty 10001
   5951 }
   5952 
   5953 
   5954 \message{toc,}
   5955 % Table of contents.
   5956 \newwrite\tocfile
   5957 
   5958 % Write an entry to the toc file, opening it if necessary.
   5959 % Called from @chapter, etc.
   5960 %
   5961 % Example usage: \writetocentry{sec}{Section Name}{\the\chapno.\the\secno}
   5962 % We append the current node name (if any) and page number as additional
   5963 % arguments for the \{chap,sec,...}entry macros which will eventually
   5964 % read this.  The node name is used in the pdf outlines as the
   5965 % destination to jump to.
   5966 %
   5967 % We open the .toc file for writing here instead of at @setfilename (or
   5968 % any other fixed time) so that @contents can be anywhere in the document.
   5969 % But if #1 is `omit', then we don't do anything.  This is used for the
   5970 % table of contents chapter openings themselves.
   5971 %
   5972 \newif\iftocfileopened
   5973 \def\omitkeyword{omit}%
   5974 %
   5975 \def\writetocentry#1#2#3{%
   5976   \edef\writetoctype{#1}%
   5977   \ifx\writetoctype\omitkeyword \else
   5978     \iftocfileopened\else
   5979       \immediate\openout\tocfile = \jobname.toc
   5980       \global\tocfileopenedtrue
   5981     \fi
   5982     %
   5983     \iflinks
   5984       {\atdummies
   5985        \edef\temp{%
   5986          \write\tocfile{@#1entry{#2}{#3}{\lastnode}{\noexpand\folio}}}%
   5987        \temp
   5988       }%
   5989     \fi
   5990   \fi
   5991   %
   5992   % Tell \shipout to create a pdf destination on each page, if we're
   5993   % writing pdf.  These are used in the table of contents.  We can't
   5994   % just write one on every page because the title pages are numbered
   5995   % 1 and 2 (the page numbers aren't printed), and so are the first
   5996   % two pages of the document.  Thus, we'd have two destinations named
   5997   % `1', and two named `2'.
   5998   \ifpdf \global\pdfmakepagedesttrue \fi
   5999 }
   6000 
   6001 
   6002 % These characters do not print properly in the Computer Modern roman
   6003 % fonts, so we must take special care.  This is more or less redundant
   6004 % with the Texinfo input format setup at the end of this file.
   6005 %
   6006 \def\activecatcodes{%
   6007   \catcode`\"=\active
   6008   \catcode`\$=\active
   6009   \catcode`\<=\active
   6010   \catcode`\>=\active
   6011   \catcode`\\=\active
   6012   \catcode`\^=\active
   6013   \catcode`\_=\active
   6014   \catcode`\|=\active
   6015   \catcode`\~=\active
   6016 }
   6017 
   6018 
   6019 % Read the toc file, which is essentially Texinfo input.
   6020 \def\readtocfile{%
   6021   \setupdatafile
   6022   \activecatcodes
   6023   \input \tocreadfilename
   6024 }
   6025 
   6026 \newskip\contentsrightmargin \contentsrightmargin=1in
   6027 \newcount\savepageno
   6028 \newcount\lastnegativepageno \lastnegativepageno = -1
   6029 
   6030 % Prepare to read what we've written to \tocfile.
   6031 %
   6032 \def\startcontents#1{%
   6033   % If @setchapternewpage on, and @headings double, the contents should
   6034   % start on an odd page, unlike chapters.  Thus, we maintain
   6035   % \contentsalignmacro in parallel with \pagealignmacro.
   6036   % From: Torbjorn Granlund <tege (a] matematik.su.se>
   6037   \contentsalignmacro
   6038   \immediate\closeout\tocfile
   6039   %
   6040   % Don't need to put `Contents' or `Short Contents' in the headline.
   6041   % It is abundantly clear what they are.
   6042   \chapmacro{#1}{Yomitfromtoc}{}%
   6043   %
   6044   \savepageno = \pageno
   6045   \begingroup                  % Set up to handle contents files properly.
   6046     \raggedbottom              % Worry more about breakpoints than the bottom.
   6047     \advance\hsize by -\contentsrightmargin % Don't use the full line length.
   6048     %
   6049     % Roman numerals for page numbers.
   6050     \ifnum \pageno>0 \global\pageno = \lastnegativepageno \fi
   6051 }
   6052 
   6053 % redefined for the two-volume lispref.  We always output on
   6054 % \jobname.toc even if this is redefined.
   6055 %
   6056 \def\tocreadfilename{\jobname.toc}
   6057 
   6058 % Normal (long) toc.
   6059 %
   6060 \def\contents{%
   6061   \startcontents{\putwordTOC}%
   6062     \openin 1 \tocreadfilename\space
   6063     \ifeof 1 \else
   6064       \readtocfile
   6065     \fi
   6066     \vfill \eject
   6067     \contentsalignmacro % in case @setchapternewpage odd is in effect
   6068     \ifeof 1 \else
   6069       \pdfmakeoutlines
   6070     \fi
   6071     \closein 1
   6072   \endgroup
   6073   \lastnegativepageno = \pageno
   6074   \global\pageno = \savepageno
   6075 }
   6076 
   6077 % And just the chapters.
   6078 \def\summarycontents{%
   6079   \startcontents{\putwordShortTOC}%
   6080     %
   6081     \let\partentry = \shortpartentry
   6082     \let\numchapentry = \shortchapentry
   6083     \let\appentry = \shortchapentry
   6084     \let\unnchapentry = \shortunnchapentry
   6085     % We want a true roman here for the page numbers.
   6086     \secfonts
   6087     \let\rm=\shortcontrm \let\bf=\shortcontbf
   6088     \let\sl=\shortcontsl \let\tt=\shortconttt
   6089     \rm
   6090     \hyphenpenalty = 10000
   6091     \advance\baselineskip by 1pt % Open it up a little.
   6092     \def\numsecentry##1##2##3##4{}
   6093     \let\appsecentry = \numsecentry
   6094     \let\unnsecentry = \numsecentry
   6095     \let\numsubsecentry = \numsecentry
   6096     \let\appsubsecentry = \numsecentry
   6097     \let\unnsubsecentry = \numsecentry
   6098     \let\numsubsubsecentry = \numsecentry
   6099     \let\appsubsubsecentry = \numsecentry
   6100     \let\unnsubsubsecentry = \numsecentry
   6101     \openin 1 \tocreadfilename\space
   6102     \ifeof 1 \else
   6103       \readtocfile
   6104     \fi
   6105     \closein 1
   6106     \vfill \eject
   6107     \contentsalignmacro % in case @setchapternewpage odd is in effect
   6108   \endgroup
   6109   \lastnegativepageno = \pageno
   6110   \global\pageno = \savepageno
   6111 }
   6112 \let\shortcontents = \summarycontents
   6113 
   6114 % Typeset the label for a chapter or appendix for the short contents.
   6115 % The arg is, e.g., `A' for an appendix, or `3' for a chapter.
   6116 %
   6117 \def\shortchaplabel#1{%
   6118   % This space should be enough, since a single number is .5em, and the
   6119   % widest letter (M) is 1em, at least in the Computer Modern fonts.
   6120   % But use \hss just in case.
   6121   % (This space doesn't include the extra space that gets added after
   6122   % the label; that gets put in by \shortchapentry above.)
   6123   %
   6124   % We'd like to right-justify chapter numbers, but that looks strange
   6125   % with appendix letters.  And right-justifying numbers and
   6126   % left-justifying letters looks strange when there is less than 10
   6127   % chapters.  Have to read the whole toc once to know how many chapters
   6128   % there are before deciding ...
   6129   \hbox to 1em{#1\hss}%
   6130 }
   6131 
   6132 % These macros generate individual entries in the table of contents.
   6133 % The first argument is the chapter or section name.
   6134 % The last argument is the page number.
   6135 % The arguments in between are the chapter number, section number, ...
   6136 
   6137 % Parts, in the main contents.  Replace the part number, which doesn't
   6138 % exist, with an empty box.  Let's hope all the numbers have the same width.
   6139 % Also ignore the page number, which is conventionally not printed.
   6140 \def\numeralbox{\setbox0=\hbox{8}\hbox to \wd0{\hfil}}
   6141 \def\partentry#1#2#3#4{\dochapentry{\numeralbox\labelspace#1}{}}
   6142 %
   6143 % Parts, in the short toc.
   6144 \def\shortpartentry#1#2#3#4{%
   6145   \penalty-300
   6146   \vskip.5\baselineskip plus.15\baselineskip minus.1\baselineskip
   6147   \shortchapentry{{\bf #1}}{\numeralbox}{}{}%
   6148 }
   6149 
   6150 % Chapters, in the main contents.
   6151 \def\numchapentry#1#2#3#4{\dochapentry{#2\labelspace#1}{#4}}
   6152 %
   6153 % Chapters, in the short toc.
   6154 % See comments in \dochapentry re vbox and related settings.
   6155 \def\shortchapentry#1#2#3#4{%
   6156   \tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno\bgroup#4\egroup}%
   6157 }
   6158 
   6159 % Appendices, in the main contents.
   6160 % Need the word Appendix, and a fixed-size box.
   6161 %
   6162 \def\appendixbox#1{%
   6163   % We use M since it's probably the widest letter.
   6164   \setbox0 = \hbox{\putwordAppendix{} M}%
   6165   \hbox to \wd0{\putwordAppendix{} #1\hss}}
   6166 %
   6167 \def\appentry#1#2#3#4{\dochapentry{\appendixbox{#2}\labelspace#1}{#4}}
   6168 
   6169 % Unnumbered chapters.
   6170 \def\unnchapentry#1#2#3#4{\dochapentry{#1}{#4}}
   6171 \def\shortunnchapentry#1#2#3#4{\tocentry{#1}{\doshortpageno\bgroup#4\egroup}}
   6172 
   6173 % Sections.
   6174 \def\numsecentry#1#2#3#4{\dosecentry{#2\labelspace#1}{#4}}
   6175 \let\appsecentry=\numsecentry
   6176 \def\unnsecentry#1#2#3#4{\dosecentry{#1}{#4}}
   6177 
   6178 % Subsections.
   6179 \def\numsubsecentry#1#2#3#4{\dosubsecentry{#2\labelspace#1}{#4}}
   6180 \let\appsubsecentry=\numsubsecentry
   6181 \def\unnsubsecentry#1#2#3#4{\dosubsecentry{#1}{#4}}
   6182 
   6183 % And subsubsections.
   6184 \def\numsubsubsecentry#1#2#3#4{\dosubsubsecentry{#2\labelspace#1}{#4}}
   6185 \let\appsubsubsecentry=\numsubsubsecentry
   6186 \def\unnsubsubsecentry#1#2#3#4{\dosubsubsecentry{#1}{#4}}
   6187 
   6188 % This parameter controls the indentation of the various levels.
   6189 % Same as \defaultparindent.
   6190 \newdimen\tocindent \tocindent = 15pt
   6191 
   6192 % Now for the actual typesetting. In all these, #1 is the text and #2 is the
   6193 % page number.
   6194 %
   6195 % If the toc has to be broken over pages, we want it to be at chapters
   6196 % if at all possible; hence the \penalty.
   6197 \def\dochapentry#1#2{%
   6198    \penalty-300 \vskip1\baselineskip plus.33\baselineskip minus.25\baselineskip
   6199    \begingroup
   6200      \chapentryfonts
   6201      \tocentry{#1}{\dopageno\bgroup#2\egroup}%
   6202    \endgroup
   6203    \nobreak\vskip .25\baselineskip plus.1\baselineskip
   6204 }
   6205 
   6206 \def\dosecentry#1#2{\begingroup
   6207   \secentryfonts \leftskip=\tocindent
   6208   \tocentry{#1}{\dopageno\bgroup#2\egroup}%
   6209 \endgroup}
   6210 
   6211 \def\dosubsecentry#1#2{\begingroup
   6212   \subsecentryfonts \leftskip=2\tocindent
   6213   \tocentry{#1}{\dopageno\bgroup#2\egroup}%
   6214 \endgroup}
   6215 
   6216 \def\dosubsubsecentry#1#2{\begingroup
   6217   \subsubsecentryfonts \leftskip=3\tocindent
   6218   \tocentry{#1}{\dopageno\bgroup#2\egroup}%
   6219 \endgroup}
   6220 
   6221 % We use the same \entry macro as for the index entries.
   6222 \let\tocentry = \entry
   6223 
   6224 % Space between chapter (or whatever) number and the title.
   6225 \def\labelspace{\hskip1em \relax}
   6226 
   6227 \def\dopageno#1{{\rm #1}}
   6228 \def\doshortpageno#1{{\rm #1}}
   6229 
   6230 \def\chapentryfonts{\secfonts \rm}
   6231 \def\secentryfonts{\textfonts}
   6232 \def\subsecentryfonts{\textfonts}
   6233 \def\subsubsecentryfonts{\textfonts}
   6234 
   6235 
   6236 \message{environments,}
   6237 % @foo ... @end foo.
   6238 
   6239 % @tex ... @end tex    escapes into raw TeX temporarily.
   6240 % One exception: @ is still an escape character, so that @end tex works.
   6241 % But \@ or @@ will get a plain @ character.
   6242 
   6243 \envdef\tex{%
   6244   \setupmarkupstyle{tex}%
   6245   \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
   6246   \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
   6247   \catcode `\^=7 \catcode `\_=8 \catcode `\~=\active \let~=\tie
   6248   \catcode `\%=14
   6249   \catcode `\+=\other
   6250   \catcode `\"=\other
   6251   \catcode `\|=\other
   6252   \catcode `\<=\other
   6253   \catcode `\>=\other
   6254   \catcode`\`=\other
   6255   \catcode`\'=\other
   6256   \escapechar=`\\
   6257   %
   6258   % ' is active in math mode (mathcode"8000).  So reset it, and all our
   6259   % other math active characters (just in case), to plain's definitions.
   6260   \mathactive
   6261   %
   6262   \let\b=\ptexb
   6263   \let\bullet=\ptexbullet
   6264   \let\c=\ptexc
   6265   \let\,=\ptexcomma
   6266   \let\.=\ptexdot
   6267   \let\dots=\ptexdots
   6268   \let\equiv=\ptexequiv
   6269   \let\!=\ptexexclam
   6270   \let\i=\ptexi
   6271   \let\indent=\ptexindent
   6272   \let\noindent=\ptexnoindent
   6273   \let\{=\ptexlbrace
   6274   \let\+=\tabalign
   6275   \let\}=\ptexrbrace
   6276   \let\/=\ptexslash
   6277   \let\*=\ptexstar
   6278   \let\t=\ptext
   6279   \expandafter \let\csname top\endcsname=\ptextop  % outer
   6280   \let\frenchspacing=\plainfrenchspacing
   6281   %
   6282   \def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}%
   6283   \def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}%
   6284   \def\@{@}%
   6285 }
   6286 % There is no need to define \Etex.
   6287 
   6288 % Define @lisp ... @end lisp.
   6289 % @lisp environment forms a group so it can rebind things,
   6290 % including the definition of @end lisp (which normally is erroneous).
   6291 
   6292 % Amount to narrow the margins by for @lisp.
   6293 \newskip\lispnarrowing \lispnarrowing=0.4in
   6294 
   6295 % This is the definition that ^^M gets inside @lisp, @example, and other
   6296 % such environments.  \null is better than a space, since it doesn't
   6297 % have any width.
   6298 \def\lisppar{\null\endgraf}
   6299 
   6300 % This space is always present above and below environments.
   6301 \newskip\envskipamount \envskipamount = 0pt
   6302 
   6303 % Make spacing and below environment symmetrical.  We use \parskip here
   6304 % to help in doing that, since in @example-like environments \parskip
   6305 % is reset to zero; thus the \afterenvbreak inserts no space -- but the
   6306 % start of the next paragraph will insert \parskip.
   6307 %
   6308 \def\aboveenvbreak{{%
   6309   % =10000 instead of <10000 because of a special case in \itemzzz and
   6310   % \sectionheading, q.v.
   6311   \ifnum \lastpenalty=10000 \else
   6312     \advance\envskipamount by \parskip
   6313     \endgraf
   6314     \ifdim\lastskip<\envskipamount
   6315       \removelastskip
   6316       % it's not a good place to break if the last penalty was \nobreak
   6317       % or better ...
   6318       \ifnum\lastpenalty<10000 \penalty-50 \fi
   6319       \vskip\envskipamount
   6320     \fi
   6321   \fi
   6322 }}
   6323 
   6324 \let\afterenvbreak = \aboveenvbreak
   6325 
   6326 % \nonarrowing is a flag.  If "set", @lisp etc don't narrow margins; it will
   6327 % also clear it, so that its embedded environments do the narrowing again.
   6328 \let\nonarrowing=\relax
   6329 
   6330 % @cartouche ... @end cartouche: draw rectangle w/rounded corners around
   6331 % environment contents.
   6332 \font\circle=lcircle10
   6333 \newdimen\circthick
   6334 \newdimen\cartouter\newdimen\cartinner
   6335 \newskip\normbskip\newskip\normpskip\newskip\normlskip
   6336 \circthick=\fontdimen8\circle
   6337 %
   6338 \def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
   6339 \def\ctr{{\hskip 6pt\circle\char'010}}
   6340 \def\cbl{{\circle\char'012\hskip -6pt}}
   6341 \def\cbr{{\hskip 6pt\circle\char'011}}
   6342 \def\carttop{\hbox to \cartouter{\hskip\lskip
   6343         \ctl\leaders\hrule height\circthick\hfil\ctr
   6344         \hskip\rskip}}
   6345 \def\cartbot{\hbox to \cartouter{\hskip\lskip
   6346         \cbl\leaders\hrule height\circthick\hfil\cbr
   6347         \hskip\rskip}}
   6348 %
   6349 \newskip\lskip\newskip\rskip
   6350 
   6351 \envdef\cartouche{%
   6352   \ifhmode\par\fi  % can't be in the midst of a paragraph.
   6353   \startsavinginserts
   6354   \lskip=\leftskip \rskip=\rightskip
   6355   \leftskip=0pt\rightskip=0pt % we want these *outside*.
   6356   \cartinner=\hsize \advance\cartinner by-\lskip
   6357   \advance\cartinner by-\rskip
   6358   \cartouter=\hsize
   6359   \advance\cartouter by 18.4pt	% allow for 3pt kerns on either
   6360 				% side, and for 6pt waste from
   6361 				% each corner char, and rule thickness
   6362   \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
   6363   % Flag to tell @lisp, etc., not to narrow margin.
   6364   \let\nonarrowing = t%
   6365   %
   6366   % If this cartouche directly follows a sectioning command, we need the
   6367   % \parskip glue (backspaced over by default) or the cartouche can
   6368   % collide with the section heading.
   6369   \ifnum\lastpenalty>10000 \vskip\parskip \penalty\lastpenalty \fi
   6370   %
   6371   \vbox\bgroup
   6372       \baselineskip=0pt\parskip=0pt\lineskip=0pt
   6373       \carttop
   6374       \hbox\bgroup
   6375 	  \hskip\lskip
   6376 	  \vrule\kern3pt
   6377 	  \vbox\bgroup
   6378 	      \kern3pt
   6379 	      \hsize=\cartinner
   6380 	      \baselineskip=\normbskip
   6381 	      \lineskip=\normlskip
   6382 	      \parskip=\normpskip
   6383 	      \vskip -\parskip
   6384 	      \comment % For explanation, see the end of def\group.
   6385 }
   6386 \def\Ecartouche{%
   6387               \ifhmode\par\fi
   6388 	      \kern3pt
   6389 	  \egroup
   6390 	  \kern3pt\vrule
   6391 	  \hskip\rskip
   6392       \egroup
   6393       \cartbot
   6394   \egroup
   6395   \checkinserts
   6396 }
   6397 
   6398 
   6399 % This macro is called at the beginning of all the @example variants,
   6400 % inside a group.
   6401 \newdimen\nonfillparindent
   6402 \def\nonfillstart{%
   6403   \aboveenvbreak
   6404   \hfuzz = 12pt % Don't be fussy
   6405   \sepspaces % Make spaces be word-separators rather than space tokens.
   6406   \let\par = \lisppar % don't ignore blank lines
   6407   \obeylines % each line of input is a line of output
   6408   \parskip = 0pt
   6409   % Turn off paragraph indentation but redefine \indent to emulate
   6410   % the normal \indent.
   6411   \nonfillparindent=\parindent
   6412   \parindent = 0pt
   6413   \let\indent\nonfillindent
   6414   %
   6415   \emergencystretch = 0pt % don't try to avoid overfull boxes
   6416   \ifx\nonarrowing\relax
   6417     \advance \leftskip by \lispnarrowing
   6418     \exdentamount=\lispnarrowing
   6419   \else
   6420     \let\nonarrowing = \relax
   6421   \fi
   6422   \let\exdent=\nofillexdent
   6423 }
   6424 
   6425 \begingroup
   6426 \obeyspaces
   6427 % We want to swallow spaces (but not other tokens) after the fake
   6428 % @indent in our nonfill-environments, where spaces are normally
   6429 % active and set to @tie, resulting in them not being ignored after
   6430 % @indent.
   6431 \gdef\nonfillindent{\futurelet\temp\nonfillindentcheck}%
   6432 \gdef\nonfillindentcheck{%
   6433 \ifx\temp %
   6434 \expandafter\nonfillindentgobble%
   6435 \else%
   6436 \leavevmode\nonfillindentbox%
   6437 \fi%
   6438 }%
   6439 \endgroup
   6440 \def\nonfillindentgobble#1{\nonfillindent}
   6441 \def\nonfillindentbox{\hbox to \nonfillparindent{\hss}}
   6442 
   6443 % If you want all examples etc. small: @set dispenvsize small.
   6444 % If you want even small examples the full size: @set dispenvsize nosmall.
   6445 % This affects the following displayed environments:
   6446 %    @example, @display, @format, @lisp
   6447 %
   6448 \def\smallword{small}
   6449 \def\nosmallword{nosmall}
   6450 \let\SETdispenvsize\relax
   6451 \def\setnormaldispenv{%
   6452   \ifx\SETdispenvsize\smallword
   6453     % end paragraph for sake of leading, in case document has no blank
   6454     % line.  This is redundant with what happens in \aboveenvbreak, but
   6455     % we need to do it before changing the fonts, and it's inconvenient
   6456     % to change the fonts afterward.
   6457     \ifnum \lastpenalty=10000 \else \endgraf \fi
   6458     \smallexamplefonts \rm
   6459   \fi
   6460 }
   6461 \def\setsmalldispenv{%
   6462   \ifx\SETdispenvsize\nosmallword
   6463   \else
   6464     \ifnum \lastpenalty=10000 \else \endgraf \fi
   6465     \smallexamplefonts \rm
   6466   \fi
   6467 }
   6468 
   6469 % We often define two environments, @foo and @smallfoo.
   6470 % Let's do it in one command.  #1 is the env name, #2 the definition.
   6471 \def\makedispenvdef#1#2{%
   6472   \expandafter\envdef\csname#1\endcsname {\setnormaldispenv #2}%
   6473   \expandafter\envdef\csname small#1\endcsname {\setsmalldispenv #2}%
   6474   \expandafter\let\csname E#1\endcsname \afterenvbreak
   6475   \expandafter\let\csname Esmall#1\endcsname \afterenvbreak
   6476 }
   6477 
   6478 % Define two environment synonyms (#1 and #2) for an environment.
   6479 \def\maketwodispenvdef#1#2#3{%
   6480   \makedispenvdef{#1}{#3}%
   6481   \makedispenvdef{#2}{#3}%
   6482 }
   6483 %
   6484 % @lisp: indented, narrowed, typewriter font;
   6485 % @example: same as @lisp.
   6486 %
   6487 % @smallexample and @smalllisp: use smaller fonts.
   6488 % Originally contributed by Pavel@xerox.
   6489 %
   6490 \maketwodispenvdef{lisp}{example}{%
   6491   \nonfillstart
   6492   \tt\setupmarkupstyle{example}%
   6493   \let\kbdfont = \kbdexamplefont % Allow @kbd to do something special.
   6494   \gobble % eat return
   6495 }
   6496 % @display/@smalldisplay: same as @lisp except keep current font.
   6497 %
   6498 \makedispenvdef{display}{%
   6499   \nonfillstart
   6500   \gobble
   6501 }
   6502 
   6503 % @format/@smallformat: same as @display except don't narrow margins.
   6504 %
   6505 \makedispenvdef{format}{%
   6506   \let\nonarrowing = t%
   6507   \nonfillstart
   6508   \gobble
   6509 }
   6510 
   6511 % @flushleft: same as @format, but doesn't obey \SETdispenvsize.
   6512 \envdef\flushleft{%
   6513   \let\nonarrowing = t%
   6514   \nonfillstart
   6515   \gobble
   6516 }
   6517 \let\Eflushleft = \afterenvbreak
   6518 
   6519 % @flushright.
   6520 %
   6521 \envdef\flushright{%
   6522   \let\nonarrowing = t%
   6523   \nonfillstart
   6524   \advance\leftskip by 0pt plus 1fill\relax
   6525   \gobble
   6526 }
   6527 \let\Eflushright = \afterenvbreak
   6528 
   6529 
   6530 % @raggedright does more-or-less normal line breaking but no right
   6531 % justification.  From plain.tex.
   6532 \envdef\raggedright{%
   6533   \rightskip0pt plus2em \spaceskip.3333em \xspaceskip.5em\relax
   6534 }
   6535 \let\Eraggedright\par
   6536 
   6537 \envdef\raggedleft{%
   6538   \parindent=0pt \leftskip0pt plus2em
   6539   \spaceskip.3333em \xspaceskip.5em \parfillskip=0pt
   6540   \hbadness=10000 % Last line will usually be underfull, so turn off
   6541                   % badness reporting.
   6542 }
   6543 \let\Eraggedleft\par
   6544 
   6545 \envdef\raggedcenter{%
   6546   \parindent=0pt \rightskip0pt plus1em \leftskip0pt plus1em
   6547   \spaceskip.3333em \xspaceskip.5em \parfillskip=0pt
   6548   \hbadness=10000 % Last line will usually be underfull, so turn off
   6549                   % badness reporting.
   6550 }
   6551 \let\Eraggedcenter\par
   6552 
   6553 
   6554 % @quotation does normal linebreaking (hence we can't use \nonfillstart)
   6555 % and narrows the margins.  We keep \parskip nonzero in general, since
   6556 % we're doing normal filling.  So, when using \aboveenvbreak and
   6557 % \afterenvbreak, temporarily make \parskip 0.
   6558 %
   6559 \makedispenvdef{quotation}{\quotationstart}
   6560 %
   6561 \def\quotationstart{%
   6562   \indentedblockstart % same as \indentedblock, but increase right margin too.
   6563   \ifx\nonarrowing\relax
   6564     \advance\rightskip by \lispnarrowing
   6565   \fi
   6566   \parsearg\quotationlabel
   6567 }
   6568 
   6569 % We have retained a nonzero parskip for the environment, since we're
   6570 % doing normal filling.
   6571 %
   6572 \def\Equotation{%
   6573   \par
   6574   \ifx\quotationauthor\thisisundefined\else
   6575     % indent a bit.
   6576     \leftline{\kern 2\leftskip \sl ---\quotationauthor}%
   6577   \fi
   6578   {\parskip=0pt \afterenvbreak}%
   6579 }
   6580 \def\Esmallquotation{\Equotation}
   6581 
   6582 % If we're given an argument, typeset it in bold with a colon after.
   6583 \def\quotationlabel#1{%
   6584   \def\temp{#1}%
   6585   \ifx\temp\empty \else
   6586     {\bf #1: }%
   6587   \fi
   6588 }
   6589 
   6590 % @indentedblock is like @quotation, but indents only on the left and
   6591 % has no optional argument.
   6592 % 
   6593 \makedispenvdef{indentedblock}{\indentedblockstart}
   6594 %
   6595 \def\indentedblockstart{%
   6596   {\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip
   6597   \parindent=0pt
   6598   %
   6599   % @cartouche defines \nonarrowing to inhibit narrowing at next level down.
   6600   \ifx\nonarrowing\relax
   6601     \advance\leftskip by \lispnarrowing
   6602     \exdentamount = \lispnarrowing
   6603   \else
   6604     \let\nonarrowing = \relax
   6605   \fi
   6606 }
   6607 
   6608 % Keep a nonzero parskip for the environment, since we're doing normal filling.
   6609 %
   6610 \def\Eindentedblock{%
   6611   \par
   6612   {\parskip=0pt \afterenvbreak}%
   6613 }
   6614 \def\Esmallindentedblock{\Eindentedblock}
   6615 
   6616 
   6617 % LaTeX-like @verbatim...@end verbatim and @verb{<char>...<char>}
   6618 % If we want to allow any <char> as delimiter,
   6619 % we need the curly braces so that makeinfo sees the @verb command, eg:
   6620 % `@verbx...x' would look like the '@verbx' command.  --janneke (a] gnu.org
   6621 %
   6622 % [Knuth]: Donald Ervin Knuth, 1996.  The TeXbook.
   6623 %
   6624 % [Knuth] p.344; only we need to do the other characters Texinfo sets
   6625 % active too.  Otherwise, they get lost as the first character on a
   6626 % verbatim line.
   6627 \def\dospecials{%
   6628   \do\ \do\\\do\{\do\}\do\$\do\&%
   6629   \do\#\do\^\do\^^K\do\_\do\^^A\do\%\do\~%
   6630   \do\<\do\>\do\|\do\@\do+\do\"%
   6631   % Don't do the quotes -- if we do, @set txicodequoteundirected and
   6632   % @set txicodequotebacktick will not have effect on @verb and
   6633   % @verbatim, and ?` and !` ligatures won't get disabled.
   6634   %\do\`\do\'%
   6635 }
   6636 %
   6637 % [Knuth] p. 380
   6638 \def\uncatcodespecials{%
   6639   \def\do##1{\catcode`##1=\other}\dospecials}
   6640 %
   6641 % Setup for the @verb command.
   6642 %
   6643 % Eight spaces for a tab
   6644 \begingroup
   6645   \catcode`\^^I=\active
   6646   \gdef\tabeightspaces{\catcode`\^^I=\active\def^^I{\ \ \ \ \ \ \ \ }}
   6647 \endgroup
   6648 %
   6649 \def\setupverb{%
   6650   \tt  % easiest (and conventionally used) font for verbatim
   6651   \def\par{\leavevmode\endgraf}%
   6652   \setupmarkupstyle{verb}%
   6653   \tabeightspaces
   6654   % Respect line breaks,
   6655   % print special symbols as themselves, and
   6656   % make each space count
   6657   % must do in this order:
   6658   \obeylines \uncatcodespecials \sepspaces
   6659 }
   6660 
   6661 % Setup for the @verbatim environment
   6662 %
   6663 % Real tab expansion.
   6664 \newdimen\tabw \setbox0=\hbox{\tt\space} \tabw=8\wd0 % tab amount
   6665 %
   6666 % We typeset each line of the verbatim in an \hbox, so we can handle
   6667 % tabs.  The \global is in case the verbatim line starts with an accent,
   6668 % or some other command that starts with a begin-group.  Otherwise, the
   6669 % entire \verbbox would disappear at the corresponding end-group, before
   6670 % it is typeset.  Meanwhile, we can't have nested verbatim commands
   6671 % (can we?), so the \global won't be overwriting itself.
   6672 \newbox\verbbox
   6673 \def\starttabbox{\global\setbox\verbbox=\hbox\bgroup}
   6674 %
   6675 \begingroup
   6676   \catcode`\^^I=\active
   6677   \gdef\tabexpand{%
   6678     \catcode`\^^I=\active
   6679     \def^^I{\leavevmode\egroup
   6680       \dimen\verbbox=\wd\verbbox % the width so far, or since the previous tab
   6681       \divide\dimen\verbbox by\tabw
   6682       \multiply\dimen\verbbox by\tabw % compute previous multiple of \tabw
   6683       \advance\dimen\verbbox by\tabw  % advance to next multiple of \tabw
   6684       \wd\verbbox=\dimen\verbbox \box\verbbox \starttabbox
   6685     }%
   6686   }
   6687 \endgroup
   6688 
   6689 % start the verbatim environment.
   6690 \def\setupverbatim{%
   6691   \let\nonarrowing = t%
   6692   \nonfillstart
   6693   \tt % easiest (and conventionally used) font for verbatim
   6694   % The \leavevmode here is for blank lines.  Otherwise, we would
   6695   % never \starttabox and the \egroup would end verbatim mode.
   6696   \def\par{\leavevmode\egroup\box\verbbox\endgraf}%
   6697   \tabexpand
   6698   \setupmarkupstyle{verbatim}%
   6699   % Respect line breaks,
   6700   % print special symbols as themselves, and
   6701   % make each space count.
   6702   % Must do in this order:
   6703   \obeylines \uncatcodespecials \sepspaces
   6704   \everypar{\starttabbox}%
   6705 }
   6706 
   6707 % Do the @verb magic: verbatim text is quoted by unique
   6708 % delimiter characters.  Before first delimiter expect a
   6709 % right brace, after last delimiter expect closing brace:
   6710 %
   6711 %    \def\doverb'{'<char>#1<char>'}'{#1}
   6712 %
   6713 % [Knuth] p. 382; only eat outer {}
   6714 \begingroup
   6715   \catcode`[=1\catcode`]=2\catcode`\{=\other\catcode`\}=\other
   6716   \gdef\doverb{#1[\def\next##1#1}[##1\endgroup]\next]
   6717 \endgroup
   6718 %
   6719 \def\verb{\begingroup\setupverb\doverb}
   6720 %
   6721 %
   6722 % Do the @verbatim magic: define the macro \doverbatim so that
   6723 % the (first) argument ends when '@end verbatim' is reached, ie:
   6724 %
   6725 %     \def\doverbatim#1@end verbatim{#1}
   6726 %
   6727 % For Texinfo it's a lot easier than for LaTeX,
   6728 % because texinfo's \verbatim doesn't stop at '\end{verbatim}':
   6729 % we need not redefine '\', '{' and '}'.
   6730 %
   6731 % Inspired by LaTeX's verbatim command set [latex.ltx]
   6732 %
   6733 \begingroup
   6734   \catcode`\ =\active
   6735   \obeylines %
   6736   % ignore everything up to the first ^^M, that's the newline at the end
   6737   % of the @verbatim input line itself.  Otherwise we get an extra blank
   6738   % line in the output.
   6739   \xdef\doverbatim#1^^M#2@end verbatim{#2\noexpand\end\gobble verbatim}%
   6740   % We really want {...\end verbatim} in the body of the macro, but
   6741   % without the active space; thus we have to use \xdef and \gobble.
   6742 \endgroup
   6743 %
   6744 \envdef\verbatim{%
   6745     \setupverbatim\doverbatim
   6746 }
   6747 \let\Everbatim = \afterenvbreak
   6748 
   6749 
   6750 % @verbatiminclude FILE - insert text of file in verbatim environment.
   6751 %
   6752 \def\verbatiminclude{\parseargusing\filenamecatcodes\doverbatiminclude}
   6753 %
   6754 \def\doverbatiminclude#1{%
   6755   {%
   6756     \makevalueexpandable
   6757     \setupverbatim
   6758     \indexnofonts       % Allow `@@' and other weird things in file names.
   6759     \wlog{texinfo.tex: doing @verbatiminclude of #1^^J}%
   6760     \input #1
   6761     \afterenvbreak
   6762   }%
   6763 }
   6764 
   6765 % @copying ... @end copying.
   6766 % Save the text away for @insertcopying later.
   6767 %
   6768 % We save the uninterpreted tokens, rather than creating a box.
   6769 % Saving the text in a box would be much easier, but then all the
   6770 % typesetting commands (@smallbook, font changes, etc.) have to be done
   6771 % beforehand -- and a) we want @copying to be done first in the source
   6772 % file; b) letting users define the frontmatter in as flexible order as
   6773 % possible is very desirable.
   6774 %
   6775 \def\copying{\checkenv{}\begingroup\scanargctxt\docopying}
   6776 \def\docopying#1@end copying{\endgroup\def\copyingtext{#1}}
   6777 %
   6778 \def\insertcopying{%
   6779   \begingroup
   6780     \parindent = 0pt  % paragraph indentation looks wrong on title page
   6781     \scanexp\copyingtext
   6782   \endgroup
   6783 }
   6784 
   6785 
   6786 \message{defuns,}
   6787 % @defun etc.
   6788 
   6789 \newskip\defbodyindent \defbodyindent=.4in
   6790 \newskip\defargsindent \defargsindent=50pt
   6791 \newskip\deflastargmargin \deflastargmargin=18pt
   6792 \newcount\defunpenalty
   6793 
   6794 % Start the processing of @deffn:
   6795 \def\startdefun{%
   6796   \ifnum\lastpenalty<10000
   6797     \medbreak
   6798     \defunpenalty=10003 % Will keep this @deffn together with the
   6799                         % following @def command, see below.
   6800   \else
   6801     % If there are two @def commands in a row, we'll have a \nobreak,
   6802     % which is there to keep the function description together with its
   6803     % header.  But if there's nothing but headers, we need to allow a
   6804     % break somewhere.  Check specifically for penalty 10002, inserted
   6805     % by \printdefunline, instead of 10000, since the sectioning
   6806     % commands also insert a nobreak penalty, and we don't want to allow
   6807     % a break between a section heading and a defun.
   6808     %
   6809     % As a further refinement, we avoid "club" headers by signalling
   6810     % with penalty of 10003 after the very first @deffn in the
   6811     % sequence (see above), and penalty of 10002 after any following
   6812     % @def command.
   6813     \ifnum\lastpenalty=10002 \penalty2000 \else \defunpenalty=10002 \fi
   6814     %
   6815     % Similarly, after a section heading, do not allow a break.
   6816     % But do insert the glue.
   6817     \medskip  % preceded by discardable penalty, so not a breakpoint
   6818   \fi
   6819   %
   6820   \parindent=0in
   6821   \advance\leftskip by \defbodyindent
   6822   \exdentamount=\defbodyindent
   6823 }
   6824 
   6825 \def\dodefunx#1{%
   6826   % First, check whether we are in the right environment:
   6827   \checkenv#1%
   6828   %
   6829   % As above, allow line break if we have multiple x headers in a row.
   6830   % It's not a great place, though.
   6831   \ifnum\lastpenalty=10002 \penalty3000 \else \defunpenalty=10002 \fi
   6832   %
   6833   % And now, it's time to reuse the body of the original defun:
   6834   \expandafter\gobbledefun#1%
   6835 }
   6836 \def\gobbledefun#1\startdefun{}
   6837 
   6838 % \printdefunline \deffnheader{text}
   6839 %
   6840 \def\printdefunline#1#2{%
   6841   \begingroup
   6842     % call \deffnheader:
   6843     #1#2 \endheader
   6844     % common ending:
   6845     \interlinepenalty = 10000
   6846     \advance\rightskip by 0pt plus 1fil\relax
   6847     \endgraf
   6848     \nobreak\vskip -\parskip
   6849     \penalty\defunpenalty  % signal to \startdefun and \dodefunx
   6850     % Some of the @defun-type tags do not enable magic parentheses,
   6851     % rendering the following check redundant.  But we don't optimize.
   6852     \checkparencounts
   6853   \endgroup
   6854 }
   6855 
   6856 \def\Edefun{\endgraf\medbreak}
   6857 
   6858 % \makedefun{deffn} creates \deffn, \deffnx and \Edeffn;
   6859 % the only thing remaining is to define \deffnheader.
   6860 %
   6861 \def\makedefun#1{%
   6862   \expandafter\let\csname E#1\endcsname = \Edefun
   6863   \edef\temp{\noexpand\domakedefun
   6864     \makecsname{#1}\makecsname{#1x}\makecsname{#1header}}%
   6865   \temp
   6866 }
   6867 
   6868 % \domakedefun \deffn \deffnx \deffnheader
   6869 %
   6870 % Define \deffn and \deffnx, without parameters.
   6871 % \deffnheader has to be defined explicitly.
   6872 %
   6873 \def\domakedefun#1#2#3{%
   6874   \envdef#1{%
   6875     \startdefun
   6876     \doingtypefnfalse    % distinguish typed functions from all else
   6877     \parseargusing\activeparens{\printdefunline#3}%
   6878   }%
   6879   \def#2{\dodefunx#1}%
   6880   \def#3%
   6881 }
   6882 
   6883 \newif\ifdoingtypefn       % doing typed function?
   6884 \newif\ifrettypeownline    % typeset return type on its own line?
   6885 
   6886 % @deftypefnnewline on|off says whether the return type of typed functions
   6887 % are printed on their own line.  This affects @deftypefn, @deftypefun,
   6888 % @deftypeop, and @deftypemethod.
   6889 % 
   6890 \parseargdef\deftypefnnewline{%
   6891   \def\temp{#1}%
   6892   \ifx\temp\onword
   6893     \expandafter\let\csname SETtxideftypefnnl\endcsname
   6894       = \empty
   6895   \else\ifx\temp\offword
   6896     \expandafter\let\csname SETtxideftypefnnl\endcsname
   6897       = \relax
   6898   \else
   6899     \errhelp = \EMsimple
   6900     \errmessage{Unknown @txideftypefnnl value `\temp',
   6901                 must be on|off}%
   6902   \fi\fi
   6903 }
   6904 
   6905 % Untyped functions:
   6906 
   6907 % @deffn category name args
   6908 \makedefun{deffn}{\deffngeneral{}}
   6909 
   6910 % @deffn category class name args
   6911 \makedefun{defop}#1 {\defopon{#1\ \putwordon}}
   6912 
   6913 % \defopon {category on}class name args
   6914 \def\defopon#1#2 {\deffngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} }
   6915 
   6916 % \deffngeneral {subind}category name args
   6917 %
   6918 \def\deffngeneral#1#2 #3 #4\endheader{%
   6919   % Remember that \dosubind{fn}{foo}{} is equivalent to \doind{fn}{foo}.
   6920   \dosubind{fn}{\code{#3}}{#1}%
   6921   \defname{#2}{}{#3}\magicamp\defunargs{#4\unskip}%
   6922 }
   6923 
   6924 % Typed functions:
   6925 
   6926 % @deftypefn category type name args
   6927 \makedefun{deftypefn}{\deftypefngeneral{}}
   6928 
   6929 % @deftypeop category class type name args
   6930 \makedefun{deftypeop}#1 {\deftypeopon{#1\ \putwordon}}
   6931 
   6932 % \deftypeopon {category on}class type name args
   6933 \def\deftypeopon#1#2 {\deftypefngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} }
   6934 
   6935 % \deftypefngeneral {subind}category type name args
   6936 %
   6937 \def\deftypefngeneral#1#2 #3 #4 #5\endheader{%
   6938   \dosubind{fn}{\code{#4}}{#1}%
   6939   \doingtypefntrue
   6940   \defname{#2}{#3}{#4}\defunargs{#5\unskip}%
   6941 }
   6942 
   6943 % Typed variables:
   6944 
   6945 % @deftypevr category type var args
   6946 \makedefun{deftypevr}{\deftypecvgeneral{}}
   6947 
   6948 % @deftypecv category class type var args
   6949 \makedefun{deftypecv}#1 {\deftypecvof{#1\ \putwordof}}
   6950 
   6951 % \deftypecvof {category of}class type var args
   6952 \def\deftypecvof#1#2 {\deftypecvgeneral{\putwordof\ \code{#2}}{#1\ \code{#2}} }
   6953 
   6954 % \deftypecvgeneral {subind}category type var args
   6955 %
   6956 \def\deftypecvgeneral#1#2 #3 #4 #5\endheader{%
   6957   \dosubind{vr}{\code{#4}}{#1}%
   6958   \defname{#2}{#3}{#4}\defunargs{#5\unskip}%
   6959 }
   6960 
   6961 % Untyped variables:
   6962 
   6963 % @defvr category var args
   6964 \makedefun{defvr}#1 {\deftypevrheader{#1} {} }
   6965 
   6966 % @defcv category class var args
   6967 \makedefun{defcv}#1 {\defcvof{#1\ \putwordof}}
   6968 
   6969 % \defcvof {category of}class var args
   6970 \def\defcvof#1#2 {\deftypecvof{#1}#2 {} }
   6971 
   6972 % Types:
   6973 
   6974 % @deftp category name args
   6975 \makedefun{deftp}#1 #2 #3\endheader{%
   6976   \doind{tp}{\code{#2}}%
   6977   \defname{#1}{}{#2}\defunargs{#3\unskip}%
   6978 }
   6979 
   6980 % Remaining @defun-like shortcuts:
   6981 \makedefun{defun}{\deffnheader{\putwordDeffunc} }
   6982 \makedefun{defmac}{\deffnheader{\putwordDefmac} }
   6983 \makedefun{defspec}{\deffnheader{\putwordDefspec} }
   6984 \makedefun{deftypefun}{\deftypefnheader{\putwordDeffunc} }
   6985 \makedefun{defvar}{\defvrheader{\putwordDefvar} }
   6986 \makedefun{defopt}{\defvrheader{\putwordDefopt} }
   6987 \makedefun{deftypevar}{\deftypevrheader{\putwordDefvar} }
   6988 \makedefun{defmethod}{\defopon\putwordMethodon}
   6989 \makedefun{deftypemethod}{\deftypeopon\putwordMethodon}
   6990 \makedefun{defivar}{\defcvof\putwordInstanceVariableof}
   6991 \makedefun{deftypeivar}{\deftypecvof\putwordInstanceVariableof}
   6992 
   6993 % \defname, which formats the name of the @def (not the args).
   6994 % #1 is the category, such as "Function".
   6995 % #2 is the return type, if any.
   6996 % #3 is the function name.
   6997 %
   6998 % We are followed by (but not passed) the arguments, if any.
   6999 %
   7000 \def\defname#1#2#3{%
   7001   \par
   7002   % Get the values of \leftskip and \rightskip as they were outside the @def...
   7003   \advance\leftskip by -\defbodyindent
   7004   %
   7005   % Determine if we are typesetting the return type of a typed function
   7006   % on a line by itself.
   7007   \rettypeownlinefalse
   7008   \ifdoingtypefn  % doing a typed function specifically?
   7009     % then check user option for putting return type on its own line:
   7010     \expandafter\ifx\csname SETtxideftypefnnl\endcsname\relax \else
   7011       \rettypeownlinetrue
   7012     \fi
   7013   \fi
   7014   %
   7015   % How we'll format the category name.  Putting it in brackets helps
   7016   % distinguish it from the body text that may end up on the next line
   7017   % just below it.
   7018   \def\temp{#1}%
   7019   \setbox0=\hbox{\kern\deflastargmargin \ifx\temp\empty\else [\rm\temp]\fi}
   7020   %
   7021   % Figure out line sizes for the paragraph shape.  We'll always have at
   7022   % least two.
   7023   \tempnum = 2
   7024   %
   7025   % The first line needs space for \box0; but if \rightskip is nonzero,
   7026   % we need only space for the part of \box0 which exceeds it:
   7027   \dimen0=\hsize  \advance\dimen0 by -\wd0  \advance\dimen0 by \rightskip
   7028   %
   7029   % If doing a return type on its own line, we'll have another line.
   7030   \ifrettypeownline
   7031     \advance\tempnum by 1
   7032     \def\maybeshapeline{0in \hsize}%
   7033   \else
   7034     \def\maybeshapeline{}%
   7035   \fi
   7036   %
   7037   % The continuations:
   7038   \dimen2=\hsize  \advance\dimen2 by -\defargsindent
   7039   %
   7040   % The final paragraph shape:
   7041   \parshape \tempnum  0in \dimen0  \maybeshapeline  \defargsindent \dimen2
   7042   %
   7043   % Put the category name at the right margin.
   7044   \noindent
   7045   \hbox to 0pt{%
   7046     \hfil\box0 \kern-\hsize
   7047     % \hsize has to be shortened this way:
   7048     \kern\leftskip
   7049     % Intentionally do not respect \rightskip, since we need the space.
   7050   }%
   7051   %
   7052   % Allow all lines to be underfull without complaint:
   7053   \tolerance=10000 \hbadness=10000
   7054   \exdentamount=\defbodyindent
   7055   {%
   7056     % defun fonts. We use typewriter by default (used to be bold) because:
   7057     % . we're printing identifiers, they should be in tt in principle.
   7058     % . in languages with many accents, such as Czech or French, it's
   7059     %   common to leave accents off identifiers.  The result looks ok in
   7060     %   tt, but exceedingly strange in rm.
   7061     % . we don't want -- and --- to be treated as ligatures.
   7062     % . this still does not fix the ?` and !` ligatures, but so far no
   7063     %   one has made identifiers using them :).
   7064     \df \tt
   7065     \def\temp{#2}% text of the return type
   7066     \ifx\temp\empty\else
   7067       \tclose{\temp}% typeset the return type
   7068       \ifrettypeownline
   7069         % put return type on its own line; prohibit line break following:
   7070         \hfil\vadjust{\nobreak}\break  
   7071       \else
   7072         \space  % type on same line, so just followed by a space
   7073       \fi
   7074     \fi           % no return type
   7075     #3% output function name
   7076   }%
   7077   {\rm\enskip}% hskip 0.5 em of \tenrm
   7078   %
   7079   \boldbrax
   7080   % arguments will be output next, if any.
   7081 }
   7082 
   7083 % Print arguments in slanted roman (not ttsl), inconsistently with using
   7084 % tt for the name.  This is because literal text is sometimes needed in
   7085 % the argument list (groff manual), and ttsl and tt are not very
   7086 % distinguishable.  Prevent hyphenation at `-' chars.
   7087 %
   7088 \def\defunargs#1{%
   7089   % use sl by default (not ttsl),
   7090   % tt for the names.
   7091   \df \sl \hyphenchar\font=0
   7092   %
   7093   % On the other hand, if an argument has two dashes (for instance), we
   7094   % want a way to get ttsl.  We used to recommend @var for that, so
   7095   % leave the code in, but it's strange for @var to lead to typewriter.
   7096   % Nowadays we recommend @code, since the difference between a ttsl hyphen
   7097   % and a tt hyphen is pretty tiny.  @code also disables ?` !`.
   7098   \def\var##1{{\setupmarkupstyle{var}\ttslanted{##1}}}%
   7099   #1%
   7100   \sl\hyphenchar\font=45
   7101 }
   7102 
   7103 % We want ()&[] to print specially on the defun line.
   7104 %
   7105 \def\activeparens{%
   7106   \catcode`\(=\active \catcode`\)=\active
   7107   \catcode`\[=\active \catcode`\]=\active
   7108   \catcode`\&=\active
   7109 }
   7110 
   7111 % Make control sequences which act like normal parenthesis chars.
   7112 \let\lparen = ( \let\rparen = )
   7113 
   7114 % Be sure that we always have a definition for `(', etc.  For example,
   7115 % if the fn name has parens in it, \boldbrax will not be in effect yet,
   7116 % so TeX would otherwise complain about undefined control sequence.
   7117 {
   7118   \activeparens
   7119   \global\let(=\lparen \global\let)=\rparen
   7120   \global\let[=\lbrack \global\let]=\rbrack
   7121   \global\let& = \&
   7122 
   7123   \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
   7124   \gdef\magicamp{\let&=\amprm}
   7125 }
   7126 
   7127 \newcount\parencount
   7128 
   7129 % If we encounter &foo, then turn on ()-hacking afterwards
   7130 \newif\ifampseen
   7131 \def\amprm#1 {\ampseentrue{\bf\&#1 }}
   7132 
   7133 \def\parenfont{%
   7134   \ifampseen
   7135     % At the first level, print parens in roman,
   7136     % otherwise use the default font.
   7137     \ifnum \parencount=1 \rm \fi
   7138   \else
   7139     % The \sf parens (in \boldbrax) actually are a little bolder than
   7140     % the contained text.  This is especially needed for [ and ] .
   7141     \sf
   7142   \fi
   7143 }
   7144 \def\infirstlevel#1{%
   7145   \ifampseen
   7146     \ifnum\parencount=1
   7147       #1%
   7148     \fi
   7149   \fi
   7150 }
   7151 \def\bfafterword#1 {#1 \bf}
   7152 
   7153 \def\opnr{%
   7154   \global\advance\parencount by 1
   7155   {\parenfont(}%
   7156   \infirstlevel \bfafterword
   7157 }
   7158 \def\clnr{%
   7159   {\parenfont)}%
   7160   \infirstlevel \sl
   7161   \global\advance\parencount by -1
   7162 }
   7163 
   7164 \newcount\brackcount
   7165 \def\lbrb{%
   7166   \global\advance\brackcount by 1
   7167   {\bf[}%
   7168 }
   7169 \def\rbrb{%
   7170   {\bf]}%
   7171   \global\advance\brackcount by -1
   7172 }
   7173 
   7174 \def\checkparencounts{%
   7175   \ifnum\parencount=0 \else \badparencount \fi
   7176   \ifnum\brackcount=0 \else \badbrackcount \fi
   7177 }
   7178 % these should not use \errmessage; the glibc manual, at least, actually
   7179 % has such constructs (when documenting function pointers).
   7180 \def\badparencount{%
   7181   \message{Warning: unbalanced parentheses in @def...}%
   7182   \global\parencount=0
   7183 }
   7184 \def\badbrackcount{%
   7185   \message{Warning: unbalanced square brackets in @def...}%
   7186   \global\brackcount=0
   7187 }
   7188 
   7189 
   7190 \message{macros,}
   7191 % @macro.
   7192 
   7193 % To do this right we need a feature of e-TeX, \scantokens,
   7194 % which we arrange to emulate with a temporary file in ordinary TeX.
   7195 \ifx\eTeXversion\thisisundefined
   7196   \newwrite\macscribble
   7197   \def\scantokens#1{%
   7198     \toks0={#1}%
   7199     \immediate\openout\macscribble=\jobname.tmp
   7200     \immediate\write\macscribble{\the\toks0}%
   7201     \immediate\closeout\macscribble
   7202     \input \jobname.tmp
   7203   }
   7204 \fi
   7205 
   7206 \def\scanmacro#1{\begingroup
   7207   \newlinechar`\^^M
   7208   \let\xeatspaces\eatspaces
   7209   %
   7210   % Undo catcode changes of \startcontents and \doprintindex
   7211   % When called from @insertcopying or (short)caption, we need active
   7212   % backslash to get it printed correctly.  Previously, we had
   7213   % \catcode`\\=\other instead.  We'll see whether a problem appears
   7214   % with macro expansion.				--kasal, 19aug04
   7215   \catcode`\@=0 \catcode`\\=\active \escapechar=`\@
   7216   %
   7217   % ... and for \example:
   7218   \spaceisspace
   7219   %
   7220   % The \empty here causes a following catcode 5 newline to be eaten as
   7221   % part of reading whitespace after a control sequence.  It does not
   7222   % eat a catcode 13 newline.  There's no good way to handle the two
   7223   % cases (untried: maybe e-TeX's \everyeof could help, though plain TeX
   7224   % would then have different behavior).  See the Macro Details node in
   7225   % the manual for the workaround we recommend for macros and
   7226   % line-oriented commands.
   7227   % 
   7228   \scantokens{#1\empty}%
   7229 \endgroup}
   7230 
   7231 \def\scanexp#1{%
   7232   \edef\temp{\noexpand\scanmacro{#1}}%
   7233   \temp
   7234 }
   7235 
   7236 \newcount\paramno   % Count of parameters
   7237 \newtoks\macname    % Macro name
   7238 \newif\ifrecursive  % Is it recursive?
   7239 
   7240 % List of all defined macros in the form
   7241 %    \definedummyword\macro1\definedummyword\macro2...
   7242 % Currently is also contains all @aliases; the list can be split
   7243 % if there is a need.
   7244 \def\macrolist{}
   7245 
   7246 % Add the macro to \macrolist
   7247 \def\addtomacrolist#1{\expandafter \addtomacrolistxxx \csname#1\endcsname}
   7248 \def\addtomacrolistxxx#1{%
   7249      \toks0 = \expandafter{\macrolist\definedummyword#1}%
   7250      \xdef\macrolist{\the\toks0}%
   7251 }
   7252 
   7253 % Utility routines.
   7254 % This does \let #1 = #2, with \csnames; that is,
   7255 %   \let \csname#1\endcsname = \csname#2\endcsname
   7256 % (except of course we have to play expansion games).
   7257 %
   7258 \def\cslet#1#2{%
   7259   \expandafter\let
   7260   \csname#1\expandafter\endcsname
   7261   \csname#2\endcsname
   7262 }
   7263 
   7264 % Trim leading and trailing spaces off a string.
   7265 % Concepts from aro-bend problem 15 (see CTAN).
   7266 {\catcode`\@=11
   7267 \gdef\eatspaces #1{\expandafter\trim@\expandafter{#1 }}
   7268 \gdef\trim@ #1{\trim@@ @#1 @ #1 @ @@}
   7269 \gdef\trim@@ #1@ #2@ #3@@{\trim@@@\empty #2 @}
   7270 \def\unbrace#1{#1}
   7271 \unbrace{\gdef\trim@@@ #1 } #2@{#1}
   7272 }
   7273 
   7274 % Trim a single trailing ^^M off a string.
   7275 {\catcode`\^^M=\other \catcode`\Q=3%
   7276 \gdef\eatcr #1{\eatcra #1Q^^MQ}%
   7277 \gdef\eatcra#1^^MQ{\eatcrb#1Q}%
   7278 \gdef\eatcrb#1Q#2Q{#1}%
   7279 }
   7280 
   7281 % Macro bodies are absorbed as an argument in a context where
   7282 % all characters are catcode 10, 11 or 12, except \ which is active
   7283 % (as in normal texinfo). It is necessary to change the definition of \
   7284 % to recognize macro arguments; this is the job of \mbodybackslash.
   7285 %
   7286 % Non-ASCII encodings make 8-bit characters active, so un-activate
   7287 % them to avoid their expansion.  Must do this non-globally, to
   7288 % confine the change to the current group.
   7289 %
   7290 % It's necessary to have hard CRs when the macro is executed. This is
   7291 % done by making ^^M (\endlinechar) catcode 12 when reading the macro
   7292 % body, and then making it the \newlinechar in \scanmacro.
   7293 %
   7294 \def\scanctxt{% used as subroutine
   7295   \catcode`\"=\other
   7296   \catcode`\+=\other
   7297   \catcode`\<=\other
   7298   \catcode`\>=\other
   7299   \catcode`\@=\other
   7300   \catcode`\^=\other
   7301   \catcode`\_=\other
   7302   \catcode`\|=\other
   7303   \catcode`\~=\other
   7304   \ifx\declaredencoding\ascii \else \setnonasciicharscatcodenonglobal\other \fi
   7305 }
   7306 
   7307 \def\scanargctxt{% used for copying and captions, not macros.
   7308   \scanctxt
   7309   \catcode`\\=\other
   7310   \catcode`\^^M=\other
   7311 }
   7312 
   7313 \def\macrobodyctxt{% used for @macro definitions
   7314   \scanctxt
   7315   \catcode`\{=\other
   7316   \catcode`\}=\other
   7317   \catcode`\^^M=\other
   7318   \usembodybackslash
   7319 }
   7320 
   7321 \def\macroargctxt{% used when scanning invocations
   7322   \scanctxt
   7323   \catcode`\\=0
   7324 }
   7325 % why catcode 0 for \ in the above?  To recognize \\ \{ \} as "escapes"
   7326 % for the single characters \ { }.  Thus, we end up with the "commands"
   7327 % that would be written @\ @{ @} in a Texinfo document.
   7328 % 
   7329 % We already have @{ and @}.  For @\, we define it here, and only for
   7330 % this purpose, to produce a typewriter backslash (so, the @\ that we
   7331 % define for @math can't be used with @macro calls):
   7332 %
   7333 \def\\{\normalbackslash}%
   7334 % 
   7335 % We would like to do this for \, too, since that is what makeinfo does.
   7336 % But it is not possible, because Texinfo already has a command @, for a
   7337 % cedilla accent.  Documents must use @comma{} instead.
   7338 %
   7339 % \anythingelse will almost certainly be an error of some kind.
   7340 
   7341 
   7342 % \mbodybackslash is the definition of \ in @macro bodies.
   7343 % It maps \foo\ => \csname macarg.foo\endcsname => #N
   7344 % where N is the macro parameter number.
   7345 % We define \csname macarg.\endcsname to be \realbackslash, so
   7346 % \\ in macro replacement text gets you a backslash.
   7347 %
   7348 {\catcode`@=0 @catcode`@\=@active
   7349  @gdef@usembodybackslash{@let\=@mbodybackslash}
   7350  @gdef@mbodybackslash#1\{@csname macarg.#1@endcsname}
   7351 }
   7352 \expandafter\def\csname macarg.\endcsname{\realbackslash}
   7353 
   7354 \def\margbackslash#1{\char`\#1 }
   7355 
   7356 \def\macro{\recursivefalse\parsearg\macroxxx}
   7357 \def\rmacro{\recursivetrue\parsearg\macroxxx}
   7358 
   7359 \def\macroxxx#1{%
   7360   \getargs{#1}% now \macname is the macname and \argl the arglist
   7361   \ifx\argl\empty       % no arguments
   7362      \paramno=0\relax
   7363   \else
   7364      \expandafter\parsemargdef \argl;%
   7365      \if\paramno>256\relax
   7366        \ifx\eTeXversion\thisisundefined
   7367          \errhelp = \EMsimple
   7368          \errmessage{You need eTeX to compile a file with macros with more than 256 arguments}
   7369        \fi
   7370      \fi
   7371   \fi
   7372   \if1\csname ismacro.\the\macname\endcsname
   7373      \message{Warning: redefining \the\macname}%
   7374   \else
   7375      \expandafter\ifx\csname \the\macname\endcsname \relax
   7376      \else \errmessage{Macro name \the\macname\space already defined}\fi
   7377      \global\cslet{macsave.\the\macname}{\the\macname}%
   7378      \global\expandafter\let\csname ismacro.\the\macname\endcsname=1%
   7379      \addtomacrolist{\the\macname}%
   7380   \fi
   7381   \begingroup \macrobodyctxt
   7382   \ifrecursive \expandafter\parsermacbody
   7383   \else \expandafter\parsemacbody
   7384   \fi}
   7385 
   7386 \parseargdef\unmacro{%
   7387   \if1\csname ismacro.#1\endcsname
   7388     \global\cslet{#1}{macsave.#1}%
   7389     \global\expandafter\let \csname ismacro.#1\endcsname=0%
   7390     % Remove the macro name from \macrolist:
   7391     \begingroup
   7392       \expandafter\let\csname#1\endcsname \relax
   7393       \let\definedummyword\unmacrodo
   7394       \xdef\macrolist{\macrolist}%
   7395     \endgroup
   7396   \else
   7397     \errmessage{Macro #1 not defined}%
   7398   \fi
   7399 }
   7400 
   7401 % Called by \do from \dounmacro on each macro.  The idea is to omit any
   7402 % macro definitions that have been changed to \relax.
   7403 %
   7404 \def\unmacrodo#1{%
   7405   \ifx #1\relax
   7406     % remove this
   7407   \else
   7408     \noexpand\definedummyword \noexpand#1%
   7409   \fi
   7410 }
   7411 
   7412 % This makes use of the obscure feature that if the last token of a
   7413 % <parameter list> is #, then the preceding argument is delimited by
   7414 % an opening brace, and that opening brace is not consumed.
   7415 \def\getargs#1{\getargsxxx#1{}}
   7416 \def\getargsxxx#1#{\getmacname #1 \relax\getmacargs}
   7417 \def\getmacname#1 #2\relax{\macname={#1}}
   7418 \def\getmacargs#1{\def\argl{#1}}
   7419 
   7420 % For macro processing make @ a letter so that we can make Texinfo private macro names.
   7421 \edef\texiatcatcode{\the\catcode`\@}
   7422 \catcode `@=11\relax
   7423 
   7424 % Parse the optional {params} list.  Set up \paramno and \paramlist
   7425 % so \defmacro knows what to do.  Define \macarg.BLAH for each BLAH
   7426 % in the params list to some hook where the argument si to be expanded.  If
   7427 % there are less than 10 arguments that hook is to be replaced by ##N where N
   7428 % is the position in that list, that is to say the macro arguments are to be
   7429 % defined `a la TeX in the macro body.  
   7430 %
   7431 % That gets used by \mbodybackslash (above).
   7432 %
   7433 % We need to get `macro parameter char #' into several definitions.
   7434 % The technique used is stolen from LaTeX: let \hash be something
   7435 % unexpandable, insert that wherever you need a #, and then redefine
   7436 % it to # just before using the token list produced.
   7437 %
   7438 % The same technique is used to protect \eatspaces till just before
   7439 % the macro is used.
   7440 %
   7441 % If there are 10 or more arguments, a different technique is used, where the
   7442 % hook remains in the body, and when macro is to be expanded the body is
   7443 % processed again to replace the arguments.
   7444 %
   7445 % In that case, the hook is \the\toks N-1, and we simply set \toks N-1 to the
   7446 % argument N value and then \edef  the body (nothing else will expand because of
   7447 % the catcode regime underwhich the body was input).
   7448 %
   7449 % If you compile with TeX (not eTeX), and you have macros with 10 or more
   7450 % arguments, you need that no macro has more than 256 arguments, otherwise an
   7451 % error is produced.
   7452 \def\parsemargdef#1;{%
   7453   \paramno=0\def\paramlist{}%
   7454   \let\hash\relax
   7455   \let\xeatspaces\relax
   7456   \parsemargdefxxx#1,;,%
   7457   % In case that there are 10 or more arguments we parse again the arguments
   7458   % list to set new definitions for the \macarg.BLAH macros corresponding to
   7459   % each BLAH argument. It was anyhow needed to parse already once this list
   7460   % in order to count the arguments, and as macros with at most 9 arguments
   7461   % are by far more frequent than macro with 10 or more arguments, defining
   7462   % twice the \macarg.BLAH macros does not cost too much processing power.
   7463   \ifnum\paramno<10\relax\else
   7464     \paramno0\relax
   7465     \parsemmanyargdef@@#1,;,% 10 or more arguments
   7466   \fi
   7467 }
   7468 \def\parsemargdefxxx#1,{%
   7469   \if#1;\let\next=\relax
   7470   \else \let\next=\parsemargdefxxx
   7471     \advance\paramno by 1
   7472     \expandafter\edef\csname macarg.\eatspaces{#1}\endcsname
   7473         {\xeatspaces{\hash\the\paramno}}%
   7474     \edef\paramlist{\paramlist\hash\the\paramno,}%
   7475   \fi\next}
   7476 
   7477 \def\parsemmanyargdef@@#1,{%
   7478   \if#1;\let\next=\relax
   7479   \else 
   7480     \let\next=\parsemmanyargdef@@
   7481     \edef\tempb{\eatspaces{#1}}%
   7482     \expandafter\def\expandafter\tempa
   7483        \expandafter{\csname macarg.\tempb\endcsname}%
   7484     % Note that we need some extra \noexpand\noexpand, this is because we
   7485     % don't want \the  to be expanded in the \parsermacbody  as it uses an
   7486     % \xdef .
   7487     \expandafter\edef\tempa
   7488       {\noexpand\noexpand\noexpand\the\toks\the\paramno}%
   7489     \advance\paramno by 1\relax
   7490   \fi\next}
   7491 
   7492 % These two commands read recursive and nonrecursive macro bodies.
   7493 % (They're different since rec and nonrec macros end differently.)
   7494 %
   7495 
   7496 \catcode `\@\texiatcatcode
   7497 \long\def\parsemacbody#1@end macro%
   7498 {\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
   7499 \long\def\parsermacbody#1@end rmacro%
   7500 {\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
   7501 \catcode `\@=11\relax
   7502 
   7503 \let\endargs@\relax
   7504 \let\nil@\relax
   7505 \def\nilm@{\nil@}%
   7506 \long\def\nillm@{\nil@}%
   7507 
   7508 % This macro is expanded during the Texinfo macro expansion, not during its
   7509 % definition.  It gets all the arguments values and assigns them to macros
   7510 % macarg.ARGNAME
   7511 %
   7512 % #1 is the macro name
   7513 % #2 is the list of argument names
   7514 % #3 is the list of argument values
   7515 \def\getargvals@#1#2#3{%
   7516   \def\macargdeflist@{}%
   7517   \def\saveparamlist@{#2}% Need to keep a copy for parameter expansion.
   7518   \def\paramlist{#2,\nil@}%
   7519   \def\macroname{#1}%
   7520   \begingroup
   7521   \macroargctxt
   7522   \def\argvaluelist{#3,\nil@}%
   7523   \def\@tempa{#3}%
   7524   \ifx\@tempa\empty
   7525     \setemptyargvalues@
   7526   \else
   7527     \getargvals@@
   7528   \fi
   7529 }
   7530 
   7531 % 
   7532 \def\getargvals@@{%
   7533   \ifx\paramlist\nilm@
   7534       % Some sanity check needed here that \argvaluelist is also empty.
   7535       \ifx\argvaluelist\nillm@
   7536       \else
   7537         \errhelp = \EMsimple
   7538         \errmessage{Too many arguments in macro `\macroname'!}%
   7539       \fi
   7540       \let\next\macargexpandinbody@
   7541   \else
   7542     \ifx\argvaluelist\nillm@
   7543        % No more arguments values passed to macro.  Set remaining named-arg
   7544        % macros to empty.
   7545        \let\next\setemptyargvalues@
   7546     \else
   7547       % pop current arg name into \@tempb
   7548       \def\@tempa##1{\pop@{\@tempb}{\paramlist}##1\endargs@}%
   7549       \expandafter\@tempa\expandafter{\paramlist}%
   7550        % pop current argument value into \@tempc
   7551       \def\@tempa##1{\longpop@{\@tempc}{\argvaluelist}##1\endargs@}%
   7552       \expandafter\@tempa\expandafter{\argvaluelist}%
   7553        % Here \@tempb is the current arg name and \@tempc is the current arg value.
   7554        % First place the new argument macro definition into \@tempd
   7555        \expandafter\macname\expandafter{\@tempc}%
   7556        \expandafter\let\csname macarg.\@tempb\endcsname\relax
   7557        \expandafter\def\expandafter\@tempe\expandafter{%
   7558          \csname macarg.\@tempb\endcsname}%
   7559        \edef\@tempd{\long\def\@tempe{\the\macname}}%
   7560        \push@\@tempd\macargdeflist@
   7561        \let\next\getargvals@@
   7562     \fi
   7563   \fi
   7564   \next
   7565 }
   7566 
   7567 \def\push@#1#2{%
   7568   \expandafter\expandafter\expandafter\def
   7569   \expandafter\expandafter\expandafter#2%
   7570   \expandafter\expandafter\expandafter{%
   7571   \expandafter#1#2}%
   7572 }
   7573 
   7574 % Replace arguments by their values in the macro body, and place the result
   7575 % in macro \@tempa
   7576 \def\macvalstoargs@{%
   7577   %  To do this we use the property that token registers that are \the'ed
   7578   % within an \edef  expand only once. So we are going to place all argument
   7579   % values into respective token registers.
   7580   %
   7581   % First we save the token context, and initialize argument numbering.
   7582   \begingroup
   7583     \paramno0\relax
   7584     % Then, for each argument number #N, we place the corresponding argument
   7585     % value into a new token list register \toks#N
   7586     \expandafter\putargsintokens@\saveparamlist@,;,%
   7587     % Then, we expand the body so that argument are replaced by their
   7588     % values. The trick for values not to be expanded themselves is that they
   7589     % are within tokens and that tokens expand only once in an \edef .
   7590     \edef\@tempc{\csname mac.\macroname .body\endcsname}%
   7591     % Now we restore the token stack pointer to free the token list registers
   7592     % which we have used, but we make sure that expanded body is saved after
   7593     % group.
   7594     \expandafter
   7595   \endgroup
   7596   \expandafter\def\expandafter\@tempa\expandafter{\@tempc}%
   7597   }
   7598 
   7599 \def\macargexpandinbody@{% 
   7600   %% Define the named-macro outside of this group and then close this group. 
   7601   \expandafter
   7602   \endgroup
   7603   \macargdeflist@
   7604   % First the replace in body the macro arguments by their values, the result
   7605   % is in \@tempa .
   7606   \macvalstoargs@
   7607   % Then we point at the \norecurse or \gobble (for recursive) macro value
   7608   % with \@tempb .
   7609   \expandafter\let\expandafter\@tempb\csname mac.\macroname .recurse\endcsname
   7610   % Depending on whether it is recursive or not, we need some tailing
   7611   % \egroup .
   7612   \ifx\@tempb\gobble
   7613      \let\@tempc\relax
   7614   \else
   7615      \let\@tempc\egroup
   7616   \fi
   7617   % And now we do the real job:
   7618   \edef\@tempd{\noexpand\@tempb{\macroname}\noexpand\scanmacro{\@tempa}\@tempc}%
   7619   \@tempd
   7620 }
   7621 
   7622 \def\putargsintokens@#1,{%
   7623   \if#1;\let\next\relax
   7624   \else
   7625     \let\next\putargsintokens@
   7626     % First we allocate the new token list register, and give it a temporary
   7627     % alias \@tempb .
   7628     \toksdef\@tempb\the\paramno
   7629     % Then we place the argument value into that token list register.
   7630     \expandafter\let\expandafter\@tempa\csname macarg.#1\endcsname
   7631     \expandafter\@tempb\expandafter{\@tempa}%
   7632     \advance\paramno by 1\relax
   7633   \fi
   7634   \next
   7635 }
   7636 
   7637 % Save the token stack pointer into macro #1
   7638 \def\texisavetoksstackpoint#1{\edef#1{\the\@cclvi}}
   7639 % Restore the token stack pointer from number in macro #1
   7640 \def\texirestoretoksstackpoint#1{\expandafter\mathchardef\expandafter\@cclvi#1\relax}
   7641 % newtoks that can be used non \outer .
   7642 \def\texinonouternewtoks{\alloc@ 5\toks \toksdef \@cclvi}
   7643 
   7644 % Tailing missing arguments are set to empty
   7645 \def\setemptyargvalues@{%
   7646   \ifx\paramlist\nilm@
   7647     \let\next\macargexpandinbody@
   7648   \else
   7649     \expandafter\setemptyargvaluesparser@\paramlist\endargs@
   7650     \let\next\setemptyargvalues@
   7651   \fi
   7652   \next
   7653 }
   7654 
   7655 \def\setemptyargvaluesparser@#1,#2\endargs@{%
   7656   \expandafter\def\expandafter\@tempa\expandafter{%
   7657     \expandafter\def\csname macarg.#1\endcsname{}}%
   7658   \push@\@tempa\macargdeflist@
   7659   \def\paramlist{#2}%
   7660 }
   7661 
   7662 % #1 is the element target macro
   7663 % #2 is the list macro
   7664 % #3,#4\endargs@ is the list value
   7665 \def\pop@#1#2#3,#4\endargs@{%
   7666    \def#1{#3}%
   7667    \def#2{#4}%
   7668 }
   7669 \long\def\longpop@#1#2#3,#4\endargs@{%
   7670    \long\def#1{#3}%
   7671    \long\def#2{#4}%
   7672 }
   7673 
   7674 % This defines a Texinfo @macro. There are eight cases: recursive and
   7675 % nonrecursive macros of zero, one, up to nine, and many arguments.
   7676 % Much magic with \expandafter here.
   7677 % \xdef is used so that macro definitions will survive the file
   7678 % they're defined in; @include reads the file inside a group.
   7679 %
   7680 \def\defmacro{%
   7681   \let\hash=##% convert placeholders to macro parameter chars
   7682   \ifrecursive
   7683     \ifcase\paramno
   7684     % 0
   7685       \expandafter\xdef\csname\the\macname\endcsname{%
   7686         \noexpand\scanmacro{\temp}}%
   7687     \or % 1
   7688       \expandafter\xdef\csname\the\macname\endcsname{%
   7689          \bgroup\noexpand\macroargctxt
   7690          \noexpand\braceorline
   7691          \expandafter\noexpand\csname\the\macname xxx\endcsname}%
   7692       \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
   7693          \egroup\noexpand\scanmacro{\temp}}%
   7694     \else
   7695       \ifnum\paramno<10\relax % at most 9
   7696         \expandafter\xdef\csname\the\macname\endcsname{%
   7697            \bgroup\noexpand\macroargctxt
   7698            \noexpand\csname\the\macname xx\endcsname}%
   7699         \expandafter\xdef\csname\the\macname xx\endcsname##1{%
   7700             \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}%
   7701         \expandafter\expandafter
   7702         \expandafter\xdef
   7703         \expandafter\expandafter
   7704           \csname\the\macname xxx\endcsname
   7705             \paramlist{\egroup\noexpand\scanmacro{\temp}}%
   7706       \else % 10 or more
   7707         \expandafter\xdef\csname\the\macname\endcsname{%
   7708           \noexpand\getargvals@{\the\macname}{\argl}%
   7709         }%    
   7710         \global\expandafter\let\csname mac.\the\macname .body\endcsname\temp
   7711         \global\expandafter\let\csname mac.\the\macname .recurse\endcsname\gobble
   7712       \fi
   7713     \fi
   7714   \else
   7715     \ifcase\paramno
   7716     % 0
   7717       \expandafter\xdef\csname\the\macname\endcsname{%
   7718         \noexpand\norecurse{\the\macname}%
   7719         \noexpand\scanmacro{\temp}\egroup}%
   7720     \or % 1
   7721       \expandafter\xdef\csname\the\macname\endcsname{%
   7722          \bgroup\noexpand\macroargctxt
   7723          \noexpand\braceorline
   7724          \expandafter\noexpand\csname\the\macname xxx\endcsname}%
   7725       \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
   7726         \egroup
   7727         \noexpand\norecurse{\the\macname}%
   7728         \noexpand\scanmacro{\temp}\egroup}%
   7729     \else % at most 9
   7730       \ifnum\paramno<10\relax
   7731         \expandafter\xdef\csname\the\macname\endcsname{%
   7732            \bgroup\noexpand\macroargctxt
   7733            \expandafter\noexpand\csname\the\macname xx\endcsname}%
   7734         \expandafter\xdef\csname\the\macname xx\endcsname##1{%
   7735             \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}%
   7736         \expandafter\expandafter
   7737         \expandafter\xdef
   7738         \expandafter\expandafter
   7739         \csname\the\macname xxx\endcsname
   7740         \paramlist{%
   7741             \egroup
   7742             \noexpand\norecurse{\the\macname}%
   7743             \noexpand\scanmacro{\temp}\egroup}%
   7744       \else % 10 or more:
   7745         \expandafter\xdef\csname\the\macname\endcsname{%
   7746           \noexpand\getargvals@{\the\macname}{\argl}%
   7747         }%
   7748         \global\expandafter\let\csname mac.\the\macname .body\endcsname\temp
   7749         \global\expandafter\let\csname mac.\the\macname .recurse\endcsname\norecurse
   7750       \fi
   7751     \fi
   7752   \fi}
   7753 
   7754 \catcode `\@\texiatcatcode\relax
   7755 
   7756 \def\norecurse#1{\bgroup\cslet{#1}{macsave.#1}}
   7757 
   7758 % \braceorline decides whether the next nonwhitespace character is a
   7759 % {.  If so it reads up to the closing }, if not, it reads the whole
   7760 % line.  Whatever was read is then fed to the next control sequence
   7761 % as an argument (by \parsebrace or \parsearg).
   7762 % 
   7763 \def\braceorline#1{\let\macnamexxx=#1\futurelet\nchar\braceorlinexxx}
   7764 \def\braceorlinexxx{%
   7765   \ifx\nchar\bgroup\else
   7766     \expandafter\parsearg
   7767   \fi \macnamexxx}
   7768 
   7769 
   7770 % @alias.
   7771 % We need some trickery to remove the optional spaces around the equal
   7772 % sign.  Make them active and then expand them all to nothing.
   7773 %
   7774 \def\alias{\parseargusing\obeyspaces\aliasxxx}
   7775 \def\aliasxxx #1{\aliasyyy#1\relax}
   7776 \def\aliasyyy #1=#2\relax{%
   7777   {%
   7778     \expandafter\let\obeyedspace=\empty
   7779     \addtomacrolist{#1}%
   7780     \xdef\next{\global\let\makecsname{#1}=\makecsname{#2}}%
   7781   }%
   7782   \next
   7783 }
   7784 
   7785 
   7786 \message{cross references,}
   7787 
   7788 \newwrite\auxfile
   7789 \newif\ifhavexrefs    % True if xref values are known.
   7790 \newif\ifwarnedxrefs  % True if we warned once that they aren't known.
   7791 
   7792 % @inforef is relatively simple.
   7793 \def\inforef #1{\inforefzzz #1,,,,**}
   7794 \def\inforefzzz #1,#2,#3,#4**{%
   7795   \putwordSee{} \putwordInfo{} \putwordfile{} \file{\ignorespaces #3{}},
   7796   node \samp{\ignorespaces#1{}}}
   7797 
   7798 % @node's only job in TeX is to define \lastnode, which is used in
   7799 % cross-references.  The @node line might or might not have commas, and
   7800 % might or might not have spaces before the first comma, like:
   7801 % @node foo , bar , ...
   7802 % We don't want such trailing spaces in the node name.
   7803 %
   7804 \parseargdef\node{\checkenv{}\donode #1 ,\finishnodeparse}
   7805 %
   7806 % also remove a trailing comma, in case of something like this:
   7807 % @node Help-Cross,  ,  , Cross-refs
   7808 \def\donode#1 ,#2\finishnodeparse{\dodonode #1,\finishnodeparse}
   7809 \def\dodonode#1,#2\finishnodeparse{\gdef\lastnode{#1}}
   7810 
   7811 \let\nwnode=\node
   7812 \let\lastnode=\empty
   7813 
   7814 % Write a cross-reference definition for the current node.  #1 is the
   7815 % type (Ynumbered, Yappendix, Ynothing).
   7816 %
   7817 \def\donoderef#1{%
   7818   \ifx\lastnode\empty\else
   7819     \setref{\lastnode}{#1}%
   7820     \global\let\lastnode=\empty
   7821   \fi
   7822 }
   7823 
   7824 % @anchor{NAME} -- define xref target at arbitrary point.
   7825 %
   7826 \newcount\savesfregister
   7827 %
   7828 \def\savesf{\relax \ifhmode \savesfregister=\spacefactor \fi}
   7829 \def\restoresf{\relax \ifhmode \spacefactor=\savesfregister \fi}
   7830 \def\anchor#1{\savesf \setref{#1}{Ynothing}\restoresf \ignorespaces}
   7831 
   7832 % \setref{NAME}{SNT} defines a cross-reference point NAME (a node or an
   7833 % anchor), which consists of three parts:
   7834 % 1) NAME-title - the current sectioning name taken from \lastsection,
   7835 %                 or the anchor name.
   7836 % 2) NAME-snt   - section number and type, passed as the SNT arg, or
   7837 %                 empty for anchors.
   7838 % 3) NAME-pg    - the page number.
   7839 %
   7840 % This is called from \donoderef, \anchor, and \dofloat.  In the case of
   7841 % floats, there is an additional part, which is not written here:
   7842 % 4) NAME-lof   - the text as it should appear in a @listoffloats.
   7843 %
   7844 \def\setref#1#2{%
   7845   \pdfmkdest{#1}%
   7846   \iflinks
   7847     {%
   7848       \atdummies  % preserve commands, but don't expand them
   7849       \edef\writexrdef##1##2{%
   7850 	\write\auxfile{@xrdef{#1-% #1 of \setref, expanded by the \edef
   7851 	  ##1}{##2}}% these are parameters of \writexrdef
   7852       }%
   7853       \toks0 = \expandafter{\lastsection}%
   7854       \immediate \writexrdef{title}{\the\toks0 }%
   7855       \immediate \writexrdef{snt}{\csname #2\endcsname}% \Ynumbered etc.
   7856       \safewhatsit{\writexrdef{pg}{\folio}}% will be written later, at \shipout
   7857     }%
   7858   \fi
   7859 }
   7860 
   7861 % @xrefautosectiontitle on|off says whether @section(ing) names are used
   7862 % automatically in xrefs, if the third arg is not explicitly specified.
   7863 % This was provided as a "secret" @set xref-automatic-section-title
   7864 % variable, now it's official.
   7865 % 
   7866 \parseargdef\xrefautomaticsectiontitle{%
   7867   \def\temp{#1}%
   7868   \ifx\temp\onword
   7869     \expandafter\let\csname SETxref-automatic-section-title\endcsname
   7870       = \empty
   7871   \else\ifx\temp\offword
   7872     \expandafter\let\csname SETxref-automatic-section-title\endcsname
   7873       = \relax
   7874   \else
   7875     \errhelp = \EMsimple
   7876     \errmessage{Unknown @xrefautomaticsectiontitle value `\temp',
   7877                 must be on|off}%
   7878   \fi\fi
   7879 }
   7880 
   7881 % 
   7883 % @xref, @pxref, and @ref generate cross-references.  For \xrefX, #1 is
   7884 % the node name, #2 the name of the Info cross-reference, #3 the printed
   7885 % node name, #4 the name of the Info file, #5 the name of the printed
   7886 % manual.  All but the node name can be omitted.
   7887 %
   7888 \def\pxref#1{\putwordsee{} \xrefX[#1,,,,,,,]}
   7889 \def\xref#1{\putwordSee{} \xrefX[#1,,,,,,,]}
   7890 \def\ref#1{\xrefX[#1,,,,,,,]}
   7891 %
   7892 \newbox\toprefbox
   7893 \newbox\printedrefnamebox
   7894 \newbox\infofilenamebox
   7895 \newbox\printedmanualbox
   7896 %
   7897 \def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup
   7898   \unsepspaces
   7899   %
   7900   % Get args without leading/trailing spaces.
   7901   \def\printedrefname{\ignorespaces #3}%
   7902   \setbox\printedrefnamebox = \hbox{\printedrefname\unskip}%
   7903   %
   7904   \def\infofilename{\ignorespaces #4}%
   7905   \setbox\infofilenamebox = \hbox{\infofilename\unskip}%
   7906   %
   7907   \def\printedmanual{\ignorespaces #5}%
   7908   \setbox\printedmanualbox  = \hbox{\printedmanual\unskip}%
   7909   %
   7910   % If the printed reference name (arg #3) was not explicitly given in
   7911   % the @xref, figure out what we want to use.
   7912   \ifdim \wd\printedrefnamebox = 0pt
   7913     % No printed node name was explicitly given.
   7914     \expandafter\ifx\csname SETxref-automatic-section-title\endcsname \relax
   7915       % Not auto section-title: use node name inside the square brackets.
   7916       \def\printedrefname{\ignorespaces #1}%
   7917     \else
   7918       % Auto section-title: use chapter/section title inside
   7919       % the square brackets if we have it.
   7920       \ifdim \wd\printedmanualbox > 0pt
   7921         % It is in another manual, so we don't have it; use node name.
   7922         \def\printedrefname{\ignorespaces #1}%
   7923       \else
   7924         \ifhavexrefs
   7925           % We (should) know the real title if we have the xref values.
   7926           \def\printedrefname{\refx{#1-title}{}}%
   7927         \else
   7928           % Otherwise just copy the Info node name.
   7929           \def\printedrefname{\ignorespaces #1}%
   7930         \fi%
   7931       \fi
   7932     \fi
   7933   \fi
   7934   %
   7935   % Make link in pdf output.
   7936   \ifpdf
   7937     {\indexnofonts
   7938      \turnoffactive
   7939      \makevalueexpandable
   7940      % This expands tokens, so do it after making catcode changes, so _
   7941      % etc. don't get their TeX definitions.  This ignores all spaces in
   7942      % #4, including (wrongly) those in the middle of the filename.
   7943      \getfilename{#4}%
   7944      %
   7945      % This (wrongly) does not take account of leading or trailing
   7946      % spaces in #1, which should be ignored.
   7947      \edef\pdfxrefdest{#1}%
   7948      \ifx\pdfxrefdest\empty
   7949        \def\pdfxrefdest{Top}% no empty targets
   7950      \else
   7951        \txiescapepdf\pdfxrefdest  % escape PDF special chars
   7952      \fi
   7953      %
   7954      \leavevmode
   7955      \startlink attr{/Border [0 0 0]}%
   7956      \ifnum\filenamelength>0
   7957        goto file{\the\filename.pdf} name{\pdfxrefdest}%
   7958      \else
   7959        goto name{\pdfmkpgn{\pdfxrefdest}}%
   7960      \fi
   7961     }%
   7962     \setcolor{\linkcolor}%
   7963   \fi
   7964   %
   7965   % Float references are printed completely differently: "Figure 1.2"
   7966   % instead of "[somenode], p.3".  We distinguish them by the
   7967   % LABEL-title being set to a magic string.
   7968   {%
   7969     % Have to otherify everything special to allow the \csname to
   7970     % include an _ in the xref name, etc.
   7971     \indexnofonts
   7972     \turnoffactive
   7973     \expandafter\global\expandafter\let\expandafter\Xthisreftitle
   7974       \csname XR#1-title\endcsname
   7975   }%
   7976   \iffloat\Xthisreftitle
   7977     % If the user specified the print name (third arg) to the ref,
   7978     % print it instead of our usual "Figure 1.2".
   7979     \ifdim\wd\printedrefnamebox = 0pt
   7980       \refx{#1-snt}{}%
   7981     \else
   7982       \printedrefname
   7983     \fi
   7984     %
   7985     % If the user also gave the printed manual name (fifth arg), append
   7986     % "in MANUALNAME".
   7987     \ifdim \wd\printedmanualbox > 0pt
   7988       \space \putwordin{} \cite{\printedmanual}%
   7989     \fi
   7990   \else
   7991     % node/anchor (non-float) references.
   7992     % 
   7993     % If we use \unhbox to print the node names, TeX does not insert
   7994     % empty discretionaries after hyphens, which means that it will not
   7995     % find a line break at a hyphen in a node names.  Since some manuals
   7996     % are best written with fairly long node names, containing hyphens,
   7997     % this is a loss.  Therefore, we give the text of the node name
   7998     % again, so it is as if TeX is seeing it for the first time.
   7999     % 
   8000     \ifdim \wd\printedmanualbox > 0pt
   8001       % Cross-manual reference with a printed manual name.
   8002       % 
   8003       \crossmanualxref{\cite{\printedmanual\unskip}}%
   8004     %
   8005     \else\ifdim \wd\infofilenamebox > 0pt
   8006       % Cross-manual reference with only an info filename (arg 4), no
   8007       % printed manual name (arg 5).  This is essentially the same as
   8008       % the case above; we output the filename, since we have nothing else.
   8009       % 
   8010       \crossmanualxref{\code{\infofilename\unskip}}%
   8011     %
   8012     \else
   8013       % Reference within this manual.
   8014       %
   8015       % _ (for example) has to be the character _ for the purposes of the
   8016       % control sequence corresponding to the node, but it has to expand
   8017       % into the usual \leavevmode...\vrule stuff for purposes of
   8018       % printing. So we \turnoffactive for the \refx-snt, back on for the
   8019       % printing, back off for the \refx-pg.
   8020       {\turnoffactive
   8021        % Only output a following space if the -snt ref is nonempty; for
   8022        % @unnumbered and @anchor, it won't be.
   8023        \setbox2 = \hbox{\ignorespaces \refx{#1-snt}{}}%
   8024        \ifdim \wd2 > 0pt \refx{#1-snt}\space\fi
   8025       }%
   8026       % output the `[mynode]' via the macro below so it can be overridden.
   8027       \xrefprintnodename\printedrefname
   8028       %
   8029       % But we always want a comma and a space:
   8030       ,\space
   8031       %
   8032       % output the `page 3'.
   8033       \turnoffactive \putwordpage\tie\refx{#1-pg}{}%
   8034     \fi\fi
   8035   \fi
   8036   \endlink
   8037 \endgroup}
   8038 
   8039 % Output a cross-manual xref to #1.  Used just above (twice).
   8040 % 
   8041 % Only include the text "Section ``foo'' in" if the foo is neither
   8042 % missing or Top.  Thus, @xref{,,,foo,The Foo Manual} outputs simply
   8043 % "see The Foo Manual", the idea being to refer to the whole manual.
   8044 % 
   8045 % But, this being TeX, we can't easily compare our node name against the
   8046 % string "Top" while ignoring the possible spaces before and after in
   8047 % the input.  By adding the arbitrary 7sp below, we make it much less
   8048 % likely that a real node name would have the same width as "Top" (e.g.,
   8049 % in a monospaced font).  Hopefully it will never happen in practice.
   8050 % 
   8051 % For the same basic reason, we retypeset the "Top" at every
   8052 % reference, since the current font is indeterminate.
   8053 % 
   8054 \def\crossmanualxref#1{%
   8055   \setbox\toprefbox = \hbox{Top\kern7sp}%
   8056   \setbox2 = \hbox{\ignorespaces \printedrefname \unskip \kern7sp}%
   8057   \ifdim \wd2 > 7sp  % nonempty?
   8058     \ifdim \wd2 = \wd\toprefbox \else  % same as Top?
   8059       \putwordSection{} ``\printedrefname'' \putwordin{}\space
   8060     \fi
   8061   \fi
   8062   #1%
   8063 }
   8064 
   8065 % This macro is called from \xrefX for the `[nodename]' part of xref
   8066 % output.  It's a separate macro only so it can be changed more easily,
   8067 % since square brackets don't work well in some documents.  Particularly
   8068 % one that Bob is working on :).
   8069 %
   8070 \def\xrefprintnodename#1{[#1]}
   8071 
   8072 % Things referred to by \setref.
   8073 %
   8074 \def\Ynothing{}
   8075 \def\Yomitfromtoc{}
   8076 \def\Ynumbered{%
   8077   \ifnum\secno=0
   8078     \putwordChapter@tie \the\chapno
   8079   \else \ifnum\subsecno=0
   8080     \putwordSection@tie \the\chapno.\the\secno
   8081   \else \ifnum\subsubsecno=0
   8082     \putwordSection@tie \the\chapno.\the\secno.\the\subsecno
   8083   \else
   8084     \putwordSection@tie \the\chapno.\the\secno.\the\subsecno.\the\subsubsecno
   8085   \fi\fi\fi
   8086 }
   8087 \def\Yappendix{%
   8088   \ifnum\secno=0
   8089      \putwordAppendix@tie @char\the\appendixno{}%
   8090   \else \ifnum\subsecno=0
   8091      \putwordSection@tie @char\the\appendixno.\the\secno
   8092   \else \ifnum\subsubsecno=0
   8093     \putwordSection@tie @char\the\appendixno.\the\secno.\the\subsecno
   8094   \else
   8095     \putwordSection@tie
   8096       @char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno
   8097   \fi\fi\fi
   8098 }
   8099 
   8100 % Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
   8101 % If its value is nonempty, SUFFIX is output afterward.
   8102 %
   8103 \def\refx#1#2{%
   8104   {%
   8105     \indexnofonts
   8106     \otherbackslash
   8107     \expandafter\global\expandafter\let\expandafter\thisrefX
   8108       \csname XR#1\endcsname
   8109   }%
   8110   \ifx\thisrefX\relax
   8111     % If not defined, say something at least.
   8112     \angleleft un\-de\-fined\angleright
   8113     \iflinks
   8114       \ifhavexrefs
   8115         {\toks0 = {#1}% avoid expansion of possibly-complex value
   8116          \message{\linenumber Undefined cross reference `\the\toks0'.}}%
   8117       \else
   8118         \ifwarnedxrefs\else
   8119           \global\warnedxrefstrue
   8120           \message{Cross reference values unknown; you must run TeX again.}%
   8121         \fi
   8122       \fi
   8123     \fi
   8124   \else
   8125     % It's defined, so just use it.
   8126     \thisrefX
   8127   \fi
   8128   #2% Output the suffix in any case.
   8129 }
   8130 
   8131 % This is the macro invoked by entries in the aux file.  Usually it's
   8132 % just a \def (we prepend XR to the control sequence name to avoid
   8133 % collisions).  But if this is a float type, we have more work to do.
   8134 %
   8135 \def\xrdef#1#2{%
   8136   {% The node name might contain 8-bit characters, which in our current
   8137    % implementation are changed to commands like @'e.  Don't let these
   8138    % mess up the control sequence name.
   8139     \indexnofonts
   8140     \turnoffactive
   8141     \xdef\safexrefname{#1}%
   8142   }%
   8143   %
   8144   \expandafter\gdef\csname XR\safexrefname\endcsname{#2}% remember this xref
   8145   %
   8146   % Was that xref control sequence that we just defined for a float?
   8147   \expandafter\iffloat\csname XR\safexrefname\endcsname
   8148     % it was a float, and we have the (safe) float type in \iffloattype.
   8149     \expandafter\let\expandafter\floatlist
   8150       \csname floatlist\iffloattype\endcsname
   8151     %
   8152     % Is this the first time we've seen this float type?
   8153     \expandafter\ifx\floatlist\relax
   8154       \toks0 = {\do}% yes, so just \do
   8155     \else
   8156       % had it before, so preserve previous elements in list.
   8157       \toks0 = \expandafter{\floatlist\do}%
   8158     \fi
   8159     %
   8160     % Remember this xref in the control sequence \floatlistFLOATTYPE,
   8161     % for later use in \listoffloats.
   8162     \expandafter\xdef\csname floatlist\iffloattype\endcsname{\the\toks0
   8163       {\safexrefname}}%
   8164   \fi
   8165 }
   8166 
   8167 % Read the last existing aux file, if any.  No error if none exists.
   8168 %
   8169 \def\tryauxfile{%
   8170   \openin 1 \jobname.aux
   8171   \ifeof 1 \else
   8172     \readdatafile{aux}%
   8173     \global\havexrefstrue
   8174   \fi
   8175   \closein 1
   8176 }
   8177 
   8178 \def\setupdatafile{%
   8179   \catcode`\^^@=\other
   8180   \catcode`\^^A=\other
   8181   \catcode`\^^B=\other
   8182   \catcode`\^^C=\other
   8183   \catcode`\^^D=\other
   8184   \catcode`\^^E=\other
   8185   \catcode`\^^F=\other
   8186   \catcode`\^^G=\other
   8187   \catcode`\^^H=\other
   8188   \catcode`\^^K=\other
   8189   \catcode`\^^L=\other
   8190   \catcode`\^^N=\other
   8191   \catcode`\^^P=\other
   8192   \catcode`\^^Q=\other
   8193   \catcode`\^^R=\other
   8194   \catcode`\^^S=\other
   8195   \catcode`\^^T=\other
   8196   \catcode`\^^U=\other
   8197   \catcode`\^^V=\other
   8198   \catcode`\^^W=\other
   8199   \catcode`\^^X=\other
   8200   \catcode`\^^Z=\other
   8201   \catcode`\^^[=\other
   8202   \catcode`\^^\=\other
   8203   \catcode`\^^]=\other
   8204   \catcode`\^^^=\other
   8205   \catcode`\^^_=\other
   8206   % It was suggested to set the catcode of ^ to 7, which would allow ^^e4 etc.
   8207   % in xref tags, i.e., node names.  But since ^^e4 notation isn't
   8208   % supported in the main text, it doesn't seem desirable.  Furthermore,
   8209   % that is not enough: for node names that actually contain a ^
   8210   % character, we would end up writing a line like this: 'xrdef {'hat
   8211   % b-title}{'hat b} and \xrdef does a \csname...\endcsname on the first
   8212   % argument, and \hat is not an expandable control sequence.  It could
   8213   % all be worked out, but why?  Either we support ^^ or we don't.
   8214   %
   8215   % The other change necessary for this was to define \auxhat:
   8216   % \def\auxhat{\def^{'hat }}% extra space so ok if followed by letter
   8217   % and then to call \auxhat in \setq.
   8218   %
   8219   \catcode`\^=\other
   8220   %
   8221   % Special characters.  Should be turned off anyway, but...
   8222   \catcode`\~=\other
   8223   \catcode`\[=\other
   8224   \catcode`\]=\other
   8225   \catcode`\"=\other
   8226   \catcode`\_=\other
   8227   \catcode`\|=\other
   8228   \catcode`\<=\other
   8229   \catcode`\>=\other
   8230   \catcode`\$=\other
   8231   \catcode`\#=\other
   8232   \catcode`\&=\other
   8233   \catcode`\%=\other
   8234   \catcode`+=\other % avoid \+ for paranoia even though we've turned it off
   8235   %
   8236   % This is to support \ in node names and titles, since the \
   8237   % characters end up in a \csname.  It's easier than
   8238   % leaving it active and making its active definition an actual \
   8239   % character.  What I don't understand is why it works in the *value*
   8240   % of the xrdef.  Seems like it should be a catcode12 \, and that
   8241   % should not typeset properly.  But it works, so I'm moving on for
   8242   % now.  --karl, 15jan04.
   8243   \catcode`\\=\other
   8244   %
   8245   % Make the characters 128-255 be printing characters.
   8246   {%
   8247     \count1=128
   8248     \def\loop{%
   8249       \catcode\count1=\other
   8250       \advance\count1 by 1
   8251       \ifnum \count1<256 \loop \fi
   8252     }%
   8253   }%
   8254   %
   8255   % @ is our escape character in .aux files, and we need braces.
   8256   \catcode`\{=1
   8257   \catcode`\}=2
   8258   \catcode`\@=0
   8259 }
   8260 
   8261 \def\readdatafile#1{%
   8262 \begingroup
   8263   \setupdatafile
   8264   \input\jobname.#1
   8265 \endgroup}
   8266 
   8267 
   8268 \message{insertions,}
   8269 % including footnotes.
   8270 
   8271 \newcount \footnoteno
   8272 
   8273 % The trailing space in the following definition for supereject is
   8274 % vital for proper filling; pages come out unaligned when you do a
   8275 % pagealignmacro call if that space before the closing brace is
   8276 % removed. (Generally, numeric constants should always be followed by a
   8277 % space to prevent strange expansion errors.)
   8278 \def\supereject{\par\penalty -20000\footnoteno =0 }
   8279 
   8280 % @footnotestyle is meaningful for Info output only.
   8281 \let\footnotestyle=\comment
   8282 
   8283 {\catcode `\@=11
   8284 %
   8285 % Auto-number footnotes.  Otherwise like plain.
   8286 \gdef\footnote{%
   8287   \let\indent=\ptexindent
   8288   \let\noindent=\ptexnoindent
   8289   \global\advance\footnoteno by \@ne
   8290   \edef\thisfootno{$^{\the\footnoteno}$}%
   8291   %
   8292   % In case the footnote comes at the end of a sentence, preserve the
   8293   % extra spacing after we do the footnote number.
   8294   \let\@sf\empty
   8295   \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\ptexslash\fi
   8296   %
   8297   % Remove inadvertent blank space before typesetting the footnote number.
   8298   \unskip
   8299   \thisfootno\@sf
   8300   \dofootnote
   8301 }%
   8302 
   8303 % Don't bother with the trickery in plain.tex to not require the
   8304 % footnote text as a parameter.  Our footnotes don't need to be so general.
   8305 %
   8306 % Oh yes, they do; otherwise, @ifset (and anything else that uses
   8307 % \parseargline) fails inside footnotes because the tokens are fixed when
   8308 % the footnote is read.  --karl, 16nov96.
   8309 %
   8310 \gdef\dofootnote{%
   8311   \insert\footins\bgroup
   8312   % We want to typeset this text as a normal paragraph, even if the
   8313   % footnote reference occurs in (for example) a display environment.
   8314   % So reset some parameters.
   8315   \hsize=\pagewidth
   8316   \interlinepenalty\interfootnotelinepenalty
   8317   \splittopskip\ht\strutbox % top baseline for broken footnotes
   8318   \splitmaxdepth\dp\strutbox
   8319   \floatingpenalty\@MM
   8320   \leftskip\z@skip
   8321   \rightskip\z@skip
   8322   \spaceskip\z@skip
   8323   \xspaceskip\z@skip
   8324   \parindent\defaultparindent
   8325   %
   8326   \smallfonts \rm
   8327   %
   8328   % Because we use hanging indentation in footnotes, a @noindent appears
   8329   % to exdent this text, so make it be a no-op.  makeinfo does not use
   8330   % hanging indentation so @noindent can still be needed within footnote
   8331   % text after an @example or the like (not that this is good style).
   8332   \let\noindent = \relax
   8333   %
   8334   % Hang the footnote text off the number.  Use \everypar in case the
   8335   % footnote extends for more than one paragraph.
   8336   \everypar = {\hang}%
   8337   \textindent{\thisfootno}%
   8338   %
   8339   % Don't crash into the line above the footnote text.  Since this
   8340   % expands into a box, it must come within the paragraph, lest it
   8341   % provide a place where TeX can split the footnote.
   8342   \footstrut
   8343   %
   8344   % Invoke rest of plain TeX footnote routine.
   8345   \futurelet\next\fo@t
   8346 }
   8347 }%end \catcode `\@=11
   8348 
   8349 % In case a @footnote appears in a vbox, save the footnote text and create
   8350 % the real \insert just after the vbox finished.  Otherwise, the insertion
   8351 % would be lost.
   8352 % Similarly, if a @footnote appears inside an alignment, save the footnote
   8353 % text to a box and make the \insert when a row of the table is finished.
   8354 % And the same can be done for other insert classes.  --kasal, 16nov03.
   8355 
   8356 % Replace the \insert primitive by a cheating macro.
   8357 % Deeper inside, just make sure that the saved insertions are not spilled
   8358 % out prematurely.
   8359 %
   8360 \def\startsavinginserts{%
   8361   \ifx \insert\ptexinsert
   8362     \let\insert\saveinsert
   8363   \else
   8364     \let\checkinserts\relax
   8365   \fi
   8366 }
   8367 
   8368 % This \insert replacement works for both \insert\footins{foo} and
   8369 % \insert\footins\bgroup foo\egroup, but it doesn't work for \insert27{foo}.
   8370 %
   8371 \def\saveinsert#1{%
   8372   \edef\next{\noexpand\savetobox \makeSAVEname#1}%
   8373   \afterassignment\next
   8374   % swallow the left brace
   8375   \let\temp =
   8376 }
   8377 \def\makeSAVEname#1{\makecsname{SAVE\expandafter\gobble\string#1}}
   8378 \def\savetobox#1{\global\setbox#1 = \vbox\bgroup \unvbox#1}
   8379 
   8380 \def\checksaveins#1{\ifvoid#1\else \placesaveins#1\fi}
   8381 
   8382 \def\placesaveins#1{%
   8383   \ptexinsert \csname\expandafter\gobblesave\string#1\endcsname
   8384     {\box#1}%
   8385 }
   8386 
   8387 % eat @SAVE -- beware, all of them have catcode \other:
   8388 {
   8389   \def\dospecials{\do S\do A\do V\do E} \uncatcodespecials  %  ;-)
   8390   \gdef\gobblesave @SAVE{}
   8391 }
   8392 
   8393 % initialization:
   8394 \def\newsaveins #1{%
   8395   \edef\next{\noexpand\newsaveinsX \makeSAVEname#1}%
   8396   \next
   8397 }
   8398 \def\newsaveinsX #1{%
   8399   \csname newbox\endcsname #1%
   8400   \expandafter\def\expandafter\checkinserts\expandafter{\checkinserts
   8401     \checksaveins #1}%
   8402 }
   8403 
   8404 % initialize:
   8405 \let\checkinserts\empty
   8406 \newsaveins\footins
   8407 \newsaveins\margin
   8408 
   8409 
   8410 % @image.  We use the macros from epsf.tex to support this.
   8411 % If epsf.tex is not installed and @image is used, we complain.
   8412 %
   8413 % Check for and read epsf.tex up front.  If we read it only at @image
   8414 % time, we might be inside a group, and then its definitions would get
   8415 % undone and the next image would fail.
   8416 \openin 1 = epsf.tex
   8417 \ifeof 1 \else
   8418   % Do not bother showing banner with epsf.tex v2.7k (available in
   8419   % doc/epsf.tex and on ctan).
   8420   \def\epsfannounce{\toks0 = }%
   8421   \input epsf.tex
   8422 \fi
   8423 \closein 1
   8424 %
   8425 % We will only complain once about lack of epsf.tex.
   8426 \newif\ifwarnednoepsf
   8427 \newhelp\noepsfhelp{epsf.tex must be installed for images to
   8428   work.  It is also included in the Texinfo distribution, or you can get
   8429   it from ftp://tug.org/tex/epsf.tex.}
   8430 %
   8431 \def\image#1{%
   8432   \ifx\epsfbox\thisisundefined
   8433     \ifwarnednoepsf \else
   8434       \errhelp = \noepsfhelp
   8435       \errmessage{epsf.tex not found, images will be ignored}%
   8436       \global\warnednoepsftrue
   8437     \fi
   8438   \else
   8439     \imagexxx #1,,,,,\finish
   8440   \fi
   8441 }
   8442 %
   8443 % Arguments to @image:
   8444 % #1 is (mandatory) image filename; we tack on .eps extension.
   8445 % #2 is (optional) width, #3 is (optional) height.
   8446 % #4 is (ignored optional) html alt text.
   8447 % #5 is (ignored optional) extension.
   8448 % #6 is just the usual extra ignored arg for parsing stuff.
   8449 \newif\ifimagevmode
   8450 \def\imagexxx#1,#2,#3,#4,#5,#6\finish{\begingroup
   8451   \catcode`\^^M = 5     % in case we're inside an example
   8452   \normalturnoffactive  % allow _ et al. in names
   8453   % If the image is by itself, center it.
   8454   \ifvmode
   8455     \imagevmodetrue
   8456   \else \ifx\centersub\centerV
   8457     % for @center @image, we need a vbox so we can have our vertical space
   8458     \imagevmodetrue
   8459     \vbox\bgroup % vbox has better behavior than vtop herev
   8460   \fi\fi
   8461   %
   8462   \ifimagevmode
   8463     \nobreak\medskip
   8464     % Usually we'll have text after the image which will insert
   8465     % \parskip glue, so insert it here too to equalize the space
   8466     % above and below.
   8467     \nobreak\vskip\parskip
   8468     \nobreak
   8469   \fi
   8470   %
   8471   % Leave vertical mode so that indentation from an enclosing
   8472   %  environment such as @quotation is respected.
   8473   % However, if we're at the top level, we don't want the
   8474   %  normal paragraph indentation.
   8475   % On the other hand, if we are in the case of @center @image, we don't
   8476   %  want to start a paragraph, which will create a hsize-width box and
   8477   %  eradicate the centering.
   8478   \ifx\centersub\centerV\else \noindent \fi
   8479   %
   8480   % Output the image.
   8481   \ifpdf
   8482     \dopdfimage{#1}{#2}{#3}%
   8483   \else
   8484     % \epsfbox itself resets \epsf?size at each figure.
   8485     \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \epsfxsize=#2\relax \fi
   8486     \setbox0 = \hbox{\ignorespaces #3}\ifdim\wd0 > 0pt \epsfysize=#3\relax \fi
   8487     \epsfbox{#1.eps}%
   8488   \fi
   8489   %
   8490   \ifimagevmode
   8491     \medskip  % space after a standalone image
   8492   \fi  
   8493   \ifx\centersub\centerV \egroup \fi
   8494 \endgroup}
   8495 
   8496 
   8497 % @float FLOATTYPE,LABEL,LOC ... @end float for displayed figures, tables,
   8498 % etc.  We don't actually implement floating yet, we always include the
   8499 % float "here".  But it seemed the best name for the future.
   8500 %
   8501 \envparseargdef\float{\eatcommaspace\eatcommaspace\dofloat#1, , ,\finish}
   8502 
   8503 % There may be a space before second and/or third parameter; delete it.
   8504 \def\eatcommaspace#1, {#1,}
   8505 
   8506 % #1 is the optional FLOATTYPE, the text label for this float, typically
   8507 % "Figure", "Table", "Example", etc.  Can't contain commas.  If omitted,
   8508 % this float will not be numbered and cannot be referred to.
   8509 %
   8510 % #2 is the optional xref label.  Also must be present for the float to
   8511 % be referable.
   8512 %
   8513 % #3 is the optional positioning argument; for now, it is ignored.  It
   8514 % will somehow specify the positions allowed to float to (here, top, bottom).
   8515 %
   8516 % We keep a separate counter for each FLOATTYPE, which we reset at each
   8517 % chapter-level command.
   8518 \let\resetallfloatnos=\empty
   8519 %
   8520 \def\dofloat#1,#2,#3,#4\finish{%
   8521   \let\thiscaption=\empty
   8522   \let\thisshortcaption=\empty
   8523   %
   8524   % don't lose footnotes inside @float.
   8525   %
   8526   % BEWARE: when the floats start float, we have to issue warning whenever an
   8527   % insert appears inside a float which could possibly float. --kasal, 26may04
   8528   %
   8529   \startsavinginserts
   8530   %
   8531   % We can't be used inside a paragraph.
   8532   \par
   8533   %
   8534   \vtop\bgroup
   8535     \def\floattype{#1}%
   8536     \def\floatlabel{#2}%
   8537     \def\floatloc{#3}% we do nothing with this yet.
   8538     %
   8539     \ifx\floattype\empty
   8540       \let\safefloattype=\empty
   8541     \else
   8542       {%
   8543         % the floattype might have accents or other special characters,
   8544         % but we need to use it in a control sequence name.
   8545         \indexnofonts
   8546         \turnoffactive
   8547         \xdef\safefloattype{\floattype}%
   8548       }%
   8549     \fi
   8550     %
   8551     % If label is given but no type, we handle that as the empty type.
   8552     \ifx\floatlabel\empty \else
   8553       % We want each FLOATTYPE to be numbered separately (Figure 1,
   8554       % Table 1, Figure 2, ...).  (And if no label, no number.)
   8555       %
   8556       \expandafter\getfloatno\csname\safefloattype floatno\endcsname
   8557       \global\advance\floatno by 1
   8558       %
   8559       {%
   8560         % This magic value for \lastsection is output by \setref as the
   8561         % XREFLABEL-title value.  \xrefX uses it to distinguish float
   8562         % labels (which have a completely different output format) from
   8563         % node and anchor labels.  And \xrdef uses it to construct the
   8564         % lists of floats.
   8565         %
   8566         \edef\lastsection{\floatmagic=\safefloattype}%
   8567         \setref{\floatlabel}{Yfloat}%
   8568       }%
   8569     \fi
   8570     %
   8571     % start with \parskip glue, I guess.
   8572     \vskip\parskip
   8573     %
   8574     % Don't suppress indentation if a float happens to start a section.
   8575     \restorefirstparagraphindent
   8576 }
   8577 
   8578 % we have these possibilities:
   8579 % @float Foo,lbl & @caption{Cap}: Foo 1.1: Cap
   8580 % @float Foo,lbl & no caption:    Foo 1.1
   8581 % @float Foo & @caption{Cap}:     Foo: Cap
   8582 % @float Foo & no caption:        Foo
   8583 % @float ,lbl & Caption{Cap}:     1.1: Cap
   8584 % @float ,lbl & no caption:       1.1
   8585 % @float & @caption{Cap}:         Cap
   8586 % @float & no caption:
   8587 %
   8588 \def\Efloat{%
   8589     \let\floatident = \empty
   8590     %
   8591     % In all cases, if we have a float type, it comes first.
   8592     \ifx\floattype\empty \else \def\floatident{\floattype}\fi
   8593     %
   8594     % If we have an xref label, the number comes next.
   8595     \ifx\floatlabel\empty \else
   8596       \ifx\floattype\empty \else % if also had float type, need tie first.
   8597         \appendtomacro\floatident{\tie}%
   8598       \fi
   8599       % the number.
   8600       \appendtomacro\floatident{\chaplevelprefix\the\floatno}%
   8601     \fi
   8602     %
   8603     % Start the printed caption with what we've constructed in
   8604     % \floatident, but keep it separate; we need \floatident again.
   8605     \let\captionline = \floatident
   8606     %
   8607     \ifx\thiscaption\empty \else
   8608       \ifx\floatident\empty \else
   8609 	\appendtomacro\captionline{: }% had ident, so need a colon between
   8610       \fi
   8611       %
   8612       % caption text.
   8613       \appendtomacro\captionline{\scanexp\thiscaption}%
   8614     \fi
   8615     %
   8616     % If we have anything to print, print it, with space before.
   8617     % Eventually this needs to become an \insert.
   8618     \ifx\captionline\empty \else
   8619       \vskip.5\parskip
   8620       \captionline
   8621       %
   8622       % Space below caption.
   8623       \vskip\parskip
   8624     \fi
   8625     %
   8626     % If have an xref label, write the list of floats info.  Do this
   8627     % after the caption, to avoid chance of it being a breakpoint.
   8628     \ifx\floatlabel\empty \else
   8629       % Write the text that goes in the lof to the aux file as
   8630       % \floatlabel-lof.  Besides \floatident, we include the short
   8631       % caption if specified, else the full caption if specified, else nothing.
   8632       {%
   8633         \atdummies
   8634         %
   8635         % since we read the caption text in the macro world, where ^^M
   8636         % is turned into a normal character, we have to scan it back, so
   8637         % we don't write the literal three characters "^^M" into the aux file.
   8638 	\scanexp{%
   8639 	  \xdef\noexpand\gtemp{%
   8640 	    \ifx\thisshortcaption\empty
   8641 	      \thiscaption
   8642 	    \else
   8643 	      \thisshortcaption
   8644 	    \fi
   8645 	  }%
   8646 	}%
   8647         \immediate\write\auxfile{@xrdef{\floatlabel-lof}{\floatident
   8648 	  \ifx\gtemp\empty \else : \gtemp \fi}}%
   8649       }%
   8650     \fi
   8651   \egroup  % end of \vtop
   8652   %
   8653   % place the captured inserts
   8654   %
   8655   % BEWARE: when the floats start floating, we have to issue warning
   8656   % whenever an insert appears inside a float which could possibly
   8657   % float. --kasal, 26may04
   8658   %
   8659   \checkinserts
   8660 }
   8661 
   8662 % Append the tokens #2 to the definition of macro #1, not expanding either.
   8663 %
   8664 \def\appendtomacro#1#2{%
   8665   \expandafter\def\expandafter#1\expandafter{#1#2}%
   8666 }
   8667 
   8668 % @caption, @shortcaption
   8669 %
   8670 \def\caption{\docaption\thiscaption}
   8671 \def\shortcaption{\docaption\thisshortcaption}
   8672 \def\docaption{\checkenv\float \bgroup\scanargctxt\defcaption}
   8673 \def\defcaption#1#2{\egroup \def#1{#2}}
   8674 
   8675 % The parameter is the control sequence identifying the counter we are
   8676 % going to use.  Create it if it doesn't exist and assign it to \floatno.
   8677 \def\getfloatno#1{%
   8678   \ifx#1\relax
   8679       % Haven't seen this figure type before.
   8680       \csname newcount\endcsname #1%
   8681       %
   8682       % Remember to reset this floatno at the next chap.
   8683       \expandafter\gdef\expandafter\resetallfloatnos
   8684         \expandafter{\resetallfloatnos #1=0 }%
   8685   \fi
   8686   \let\floatno#1%
   8687 }
   8688 
   8689 % \setref calls this to get the XREFLABEL-snt value.  We want an @xref
   8690 % to the FLOATLABEL to expand to "Figure 3.1".  We call \setref when we
   8691 % first read the @float command.
   8692 %
   8693 \def\Yfloat{\floattype@tie \chaplevelprefix\the\floatno}%
   8694 
   8695 % Magic string used for the XREFLABEL-title value, so \xrefX can
   8696 % distinguish floats from other xref types.
   8697 \def\floatmagic{!!float!!}
   8698 
   8699 % #1 is the control sequence we are passed; we expand into a conditional
   8700 % which is true if #1 represents a float ref.  That is, the magic
   8701 % \lastsection value which we \setref above.
   8702 %
   8703 \def\iffloat#1{\expandafter\doiffloat#1==\finish}
   8704 %
   8705 % #1 is (maybe) the \floatmagic string.  If so, #2 will be the
   8706 % (safe) float type for this float.  We set \iffloattype to #2.
   8707 %
   8708 \def\doiffloat#1=#2=#3\finish{%
   8709   \def\temp{#1}%
   8710   \def\iffloattype{#2}%
   8711   \ifx\temp\floatmagic
   8712 }
   8713 
   8714 % @listoffloats FLOATTYPE - print a list of floats like a table of contents.
   8715 %
   8716 \parseargdef\listoffloats{%
   8717   \def\floattype{#1}% floattype
   8718   {%
   8719     % the floattype might have accents or other special characters,
   8720     % but we need to use it in a control sequence name.
   8721     \indexnofonts
   8722     \turnoffactive
   8723     \xdef\safefloattype{\floattype}%
   8724   }%
   8725   %
   8726   % \xrdef saves the floats as a \do-list in \floatlistSAFEFLOATTYPE.
   8727   \expandafter\ifx\csname floatlist\safefloattype\endcsname \relax
   8728     \ifhavexrefs
   8729       % if the user said @listoffloats foo but never @float foo.
   8730       \message{\linenumber No `\safefloattype' floats to list.}%
   8731     \fi
   8732   \else
   8733     \begingroup
   8734       \leftskip=\tocindent  % indent these entries like a toc
   8735       \let\do=\listoffloatsdo
   8736       \csname floatlist\safefloattype\endcsname
   8737     \endgroup
   8738   \fi
   8739 }
   8740 
   8741 % This is called on each entry in a list of floats.  We're passed the
   8742 % xref label, in the form LABEL-title, which is how we save it in the
   8743 % aux file.  We strip off the -title and look up \XRLABEL-lof, which
   8744 % has the text we're supposed to typeset here.
   8745 %
   8746 % Figures without xref labels will not be included in the list (since
   8747 % they won't appear in the aux file).
   8748 %
   8749 \def\listoffloatsdo#1{\listoffloatsdoentry#1\finish}
   8750 \def\listoffloatsdoentry#1-title\finish{{%
   8751   % Can't fully expand XR#1-lof because it can contain anything.  Just
   8752   % pass the control sequence.  On the other hand, XR#1-pg is just the
   8753   % page number, and we want to fully expand that so we can get a link
   8754   % in pdf output.
   8755   \toksA = \expandafter{\csname XR#1-lof\endcsname}%
   8756   %
   8757   % use the same \entry macro we use to generate the TOC and index.
   8758   \edef\writeentry{\noexpand\entry{\the\toksA}{\csname XR#1-pg\endcsname}}%
   8759   \writeentry
   8760 }}
   8761 
   8762 
   8763 \message{localization,}
   8764 
   8765 % For single-language documents, @documentlanguage is usually given very
   8766 % early, just after @documentencoding.  Single argument is the language
   8767 % (de) or locale (de_DE) abbreviation.
   8768 %
   8769 {
   8770   \catcode`\_ = \active
   8771   \globaldefs=1
   8772 \parseargdef\documentlanguage{\begingroup
   8773   \let_=\normalunderscore  % normal _ character for filenames
   8774   \tex % read txi-??.tex file in plain TeX.
   8775     % Read the file by the name they passed if it exists.
   8776     \openin 1 txi-#1.tex
   8777     \ifeof 1
   8778       \documentlanguagetrywithoutunderscore{#1_\finish}%
   8779     \else
   8780       \globaldefs = 1  % everything in the txi-LL files needs to persist
   8781       \input txi-#1.tex
   8782     \fi
   8783     \closein 1
   8784   \endgroup % end raw TeX
   8785 \endgroup}
   8786 %
   8787 % If they passed de_DE, and txi-de_DE.tex doesn't exist,
   8788 % try txi-de.tex.
   8789 %
   8790 \gdef\documentlanguagetrywithoutunderscore#1_#2\finish{%
   8791   \openin 1 txi-#1.tex
   8792   \ifeof 1
   8793     \errhelp = \nolanghelp
   8794     \errmessage{Cannot read language file txi-#1.tex}%
   8795   \else
   8796     \globaldefs = 1  % everything in the txi-LL files needs to persist
   8797     \input txi-#1.tex
   8798   \fi
   8799   \closein 1
   8800 }
   8801 }% end of special _ catcode
   8802 %
   8803 \newhelp\nolanghelp{The given language definition file cannot be found or
   8804 is empty.  Maybe you need to install it?  Putting it in the current
   8805 directory should work if nowhere else does.}
   8806 
   8807 % This macro is called from txi-??.tex files; the first argument is the
   8808 % \language name to set (without the "\lang@" prefix), the second and
   8809 % third args are \{left,right}hyphenmin.
   8810 %
   8811 % The language names to pass are determined when the format is built.
   8812 % See the etex.log file created at that time, e.g.,
   8813 % /usr/local/texlive/2008/texmf-var/web2c/pdftex/etex.log.
   8814 %
   8815 % With TeX Live 2008, etex now includes hyphenation patterns for all
   8816 % available languages.  This means we can support hyphenation in
   8817 % Texinfo, at least to some extent.  (This still doesn't solve the
   8818 % accented characters problem.)
   8819 %
   8820 \catcode`@=11
   8821 \def\txisetlanguage#1#2#3{%
   8822   % do not set the language if the name is undefined in the current TeX.
   8823   \expandafter\ifx\csname lang@#1\endcsname \relax
   8824     \message{no patterns for #1}%
   8825   \else
   8826     \global\language = \csname lang@#1\endcsname
   8827   \fi
   8828   % but there is no harm in adjusting the hyphenmin values regardless.
   8829   \global\lefthyphenmin = #2\relax
   8830   \global\righthyphenmin = #3\relax
   8831 }
   8832 
   8833 % Helpers for encodings.
   8834 % Set the catcode of characters 128 through 255 to the specified number.
   8835 %
   8836 \def\setnonasciicharscatcode#1{%
   8837    \count255=128
   8838    \loop\ifnum\count255<256
   8839       \global\catcode\count255=#1\relax
   8840       \advance\count255 by 1
   8841    \repeat
   8842 }
   8843 
   8844 \def\setnonasciicharscatcodenonglobal#1{%
   8845    \count255=128
   8846    \loop\ifnum\count255<256
   8847       \catcode\count255=#1\relax
   8848       \advance\count255 by 1
   8849    \repeat
   8850 }
   8851 
   8852 % @documentencoding sets the definition of non-ASCII characters
   8853 % according to the specified encoding.
   8854 %
   8855 \parseargdef\documentencoding{%
   8856   % Encoding being declared for the document.
   8857   \def\declaredencoding{\csname #1.enc\endcsname}%
   8858   %
   8859   % Supported encodings: names converted to tokens in order to be able
   8860   % to compare them with \ifx.
   8861   \def\ascii{\csname US-ASCII.enc\endcsname}%
   8862   \def\latnine{\csname ISO-8859-15.enc\endcsname}%
   8863   \def\latone{\csname ISO-8859-1.enc\endcsname}%
   8864   \def\lattwo{\csname ISO-8859-2.enc\endcsname}%
   8865   \def\utfeight{\csname UTF-8.enc\endcsname}%
   8866   %
   8867   \ifx \declaredencoding \ascii
   8868      \asciichardefs
   8869   %
   8870   \else \ifx \declaredencoding \lattwo
   8871      \setnonasciicharscatcode\active
   8872      \lattwochardefs
   8873   %
   8874   \else \ifx \declaredencoding \latone
   8875      \setnonasciicharscatcode\active
   8876      \latonechardefs
   8877   %
   8878   \else \ifx \declaredencoding \latnine
   8879      \setnonasciicharscatcode\active
   8880      \latninechardefs
   8881   %
   8882   \else \ifx \declaredencoding \utfeight
   8883      \setnonasciicharscatcode\active
   8884      \utfeightchardefs
   8885   %
   8886   \else
   8887     \message{Unknown document encoding #1, ignoring.}%
   8888   %
   8889   \fi % utfeight
   8890   \fi % latnine
   8891   \fi % latone
   8892   \fi % lattwo
   8893   \fi % ascii
   8894 }
   8895 
   8896 % A message to be logged when using a character that isn't available
   8897 % the default font encoding (OT1).
   8898 %
   8899 \def\missingcharmsg#1{\message{Character missing in OT1 encoding: #1.}}
   8900 
   8901 % Take account of \c (plain) vs. \, (Texinfo) difference.
   8902 \def\cedilla#1{\ifx\c\ptexc\c{#1}\else\,{#1}\fi}
   8903 
   8904 % First, make active non-ASCII characters in order for them to be
   8905 % correctly categorized when TeX reads the replacement text of
   8906 % macros containing the character definitions.
   8907 \setnonasciicharscatcode\active
   8908 %
   8909 % Latin1 (ISO-8859-1) character definitions.
   8910 \def\latonechardefs{%
   8911   \gdef^^a0{\tie}
   8912   \gdef^^a1{\exclamdown}
   8913   \gdef^^a2{\missingcharmsg{CENT SIGN}}
   8914   \gdef^^a3{{\pounds}}
   8915   \gdef^^a4{\missingcharmsg{CURRENCY SIGN}}
   8916   \gdef^^a5{\missingcharmsg{YEN SIGN}}
   8917   \gdef^^a6{\missingcharmsg{BROKEN BAR}}
   8918   \gdef^^a7{\S}
   8919   \gdef^^a8{\"{}}
   8920   \gdef^^a9{\copyright}
   8921   \gdef^^aa{\ordf}
   8922   \gdef^^ab{\guillemetleft}
   8923   \gdef^^ac{$\lnot$}
   8924   \gdef^^ad{\-}
   8925   \gdef^^ae{\registeredsymbol}
   8926   \gdef^^af{\={}}
   8927   %
   8928   \gdef^^b0{\textdegree}
   8929   \gdef^^b1{$\pm$}
   8930   \gdef^^b2{$^2$}
   8931   \gdef^^b3{$^3$}
   8932   \gdef^^b4{\'{}}
   8933   \gdef^^b5{$\mu$}
   8934   \gdef^^b6{\P}
   8935   %
   8936   \gdef^^b7{$^.$}
   8937   \gdef^^b8{\cedilla\ }
   8938   \gdef^^b9{$^1$}
   8939   \gdef^^ba{\ordm}
   8940   %
   8941   \gdef^^bb{\guillemetright}
   8942   \gdef^^bc{$1\over4$}
   8943   \gdef^^bd{$1\over2$}
   8944   \gdef^^be{$3\over4$}
   8945   \gdef^^bf{\questiondown}
   8946   %
   8947   \gdef^^c0{\`A}
   8948   \gdef^^c1{\'A}
   8949   \gdef^^c2{\^A}
   8950   \gdef^^c3{\~A}
   8951   \gdef^^c4{\"A}
   8952   \gdef^^c5{\ringaccent A}
   8953   \gdef^^c6{\AE}
   8954   \gdef^^c7{\cedilla C}
   8955   \gdef^^c8{\`E}
   8956   \gdef^^c9{\'E}
   8957   \gdef^^ca{\^E}
   8958   \gdef^^cb{\"E}
   8959   \gdef^^cc{\`I}
   8960   \gdef^^cd{\'I}
   8961   \gdef^^ce{\^I}
   8962   \gdef^^cf{\"I}
   8963   %
   8964   \gdef^^d0{\DH}
   8965   \gdef^^d1{\~N}
   8966   \gdef^^d2{\`O}
   8967   \gdef^^d3{\'O}
   8968   \gdef^^d4{\^O}
   8969   \gdef^^d5{\~O}
   8970   \gdef^^d6{\"O}
   8971   \gdef^^d7{$\times$}
   8972   \gdef^^d8{\O}
   8973   \gdef^^d9{\`U}
   8974   \gdef^^da{\'U}
   8975   \gdef^^db{\^U}
   8976   \gdef^^dc{\"U}
   8977   \gdef^^dd{\'Y}
   8978   \gdef^^de{\TH}
   8979   \gdef^^df{\ss}
   8980   %
   8981   \gdef^^e0{\`a}
   8982   \gdef^^e1{\'a}
   8983   \gdef^^e2{\^a}
   8984   \gdef^^e3{\~a}
   8985   \gdef^^e4{\"a}
   8986   \gdef^^e5{\ringaccent a}
   8987   \gdef^^e6{\ae}
   8988   \gdef^^e7{\cedilla c}
   8989   \gdef^^e8{\`e}
   8990   \gdef^^e9{\'e}
   8991   \gdef^^ea{\^e}
   8992   \gdef^^eb{\"e}
   8993   \gdef^^ec{\`{\dotless i}}
   8994   \gdef^^ed{\'{\dotless i}}
   8995   \gdef^^ee{\^{\dotless i}}
   8996   \gdef^^ef{\"{\dotless i}}
   8997   %
   8998   \gdef^^f0{\dh}
   8999   \gdef^^f1{\~n}
   9000   \gdef^^f2{\`o}
   9001   \gdef^^f3{\'o}
   9002   \gdef^^f4{\^o}
   9003   \gdef^^f5{\~o}
   9004   \gdef^^f6{\"o}
   9005   \gdef^^f7{$\div$}
   9006   \gdef^^f8{\o}
   9007   \gdef^^f9{\`u}
   9008   \gdef^^fa{\'u}
   9009   \gdef^^fb{\^u}
   9010   \gdef^^fc{\"u}
   9011   \gdef^^fd{\'y}
   9012   \gdef^^fe{\th}
   9013   \gdef^^ff{\"y}
   9014 }
   9015 
   9016 % Latin9 (ISO-8859-15) encoding character definitions.
   9017 \def\latninechardefs{%
   9018   % Encoding is almost identical to Latin1.
   9019   \latonechardefs
   9020   %
   9021   \gdef^^a4{\euro}
   9022   \gdef^^a6{\v S}
   9023   \gdef^^a8{\v s}
   9024   \gdef^^b4{\v Z}
   9025   \gdef^^b8{\v z}
   9026   \gdef^^bc{\OE}
   9027   \gdef^^bd{\oe}
   9028   \gdef^^be{\"Y}
   9029 }
   9030 
   9031 % Latin2 (ISO-8859-2) character definitions.
   9032 \def\lattwochardefs{%
   9033   \gdef^^a0{\tie}
   9034   \gdef^^a1{\ogonek{A}}
   9035   \gdef^^a2{\u{}}
   9036   \gdef^^a3{\L}
   9037   \gdef^^a4{\missingcharmsg{CURRENCY SIGN}}
   9038   \gdef^^a5{\v L}
   9039   \gdef^^a6{\'S}
   9040   \gdef^^a7{\S}
   9041   \gdef^^a8{\"{}}
   9042   \gdef^^a9{\v S}
   9043   \gdef^^aa{\cedilla S}
   9044   \gdef^^ab{\v T}
   9045   \gdef^^ac{\'Z}
   9046   \gdef^^ad{\-}
   9047   \gdef^^ae{\v Z}
   9048   \gdef^^af{\dotaccent Z}
   9049   %
   9050   \gdef^^b0{\textdegree}
   9051   \gdef^^b1{\ogonek{a}}
   9052   \gdef^^b2{\ogonek{ }}
   9053   \gdef^^b3{\l}
   9054   \gdef^^b4{\'{}}
   9055   \gdef^^b5{\v l}
   9056   \gdef^^b6{\'s}
   9057   \gdef^^b7{\v{}}
   9058   \gdef^^b8{\cedilla\ }
   9059   \gdef^^b9{\v s}
   9060   \gdef^^ba{\cedilla s}
   9061   \gdef^^bb{\v t}
   9062   \gdef^^bc{\'z}
   9063   \gdef^^bd{\H{}}
   9064   \gdef^^be{\v z}
   9065   \gdef^^bf{\dotaccent z}
   9066   %
   9067   \gdef^^c0{\'R}
   9068   \gdef^^c1{\'A}
   9069   \gdef^^c2{\^A}
   9070   \gdef^^c3{\u A}
   9071   \gdef^^c4{\"A}
   9072   \gdef^^c5{\'L}
   9073   \gdef^^c6{\'C}
   9074   \gdef^^c7{\cedilla C}
   9075   \gdef^^c8{\v C}
   9076   \gdef^^c9{\'E}
   9077   \gdef^^ca{\ogonek{E}}
   9078   \gdef^^cb{\"E}
   9079   \gdef^^cc{\v E}
   9080   \gdef^^cd{\'I}
   9081   \gdef^^ce{\^I}
   9082   \gdef^^cf{\v D}
   9083   %
   9084   \gdef^^d0{\DH}
   9085   \gdef^^d1{\'N}
   9086   \gdef^^d2{\v N}
   9087   \gdef^^d3{\'O}
   9088   \gdef^^d4{\^O}
   9089   \gdef^^d5{\H O}
   9090   \gdef^^d6{\"O}
   9091   \gdef^^d7{$\times$}
   9092   \gdef^^d8{\v R}
   9093   \gdef^^d9{\ringaccent U}
   9094   \gdef^^da{\'U}
   9095   \gdef^^db{\H U}
   9096   \gdef^^dc{\"U}
   9097   \gdef^^dd{\'Y}
   9098   \gdef^^de{\cedilla T}
   9099   \gdef^^df{\ss}
   9100   %
   9101   \gdef^^e0{\'r}
   9102   \gdef^^e1{\'a}
   9103   \gdef^^e2{\^a}
   9104   \gdef^^e3{\u a}
   9105   \gdef^^e4{\"a}
   9106   \gdef^^e5{\'l}
   9107   \gdef^^e6{\'c}
   9108   \gdef^^e7{\cedilla c}
   9109   \gdef^^e8{\v c}
   9110   \gdef^^e9{\'e}
   9111   \gdef^^ea{\ogonek{e}}
   9112   \gdef^^eb{\"e}
   9113   \gdef^^ec{\v e}
   9114   \gdef^^ed{\'{\dotless{i}}}
   9115   \gdef^^ee{\^{\dotless{i}}}
   9116   \gdef^^ef{\v d}
   9117   %
   9118   \gdef^^f0{\dh}
   9119   \gdef^^f1{\'n}
   9120   \gdef^^f2{\v n}
   9121   \gdef^^f3{\'o}
   9122   \gdef^^f4{\^o}
   9123   \gdef^^f5{\H o}
   9124   \gdef^^f6{\"o}
   9125   \gdef^^f7{$\div$}
   9126   \gdef^^f8{\v r}
   9127   \gdef^^f9{\ringaccent u}
   9128   \gdef^^fa{\'u}
   9129   \gdef^^fb{\H u}
   9130   \gdef^^fc{\"u}
   9131   \gdef^^fd{\'y}
   9132   \gdef^^fe{\cedilla t}
   9133   \gdef^^ff{\dotaccent{}}
   9134 }
   9135 
   9136 % UTF-8 character definitions.
   9137 %
   9138 % This code to support UTF-8 is based on LaTeX's utf8.def, with some
   9139 % changes for Texinfo conventions.  It is included here under the GPL by
   9140 % permission from Frank Mittelbach and the LaTeX team.
   9141 %
   9142 \newcount\countUTFx
   9143 \newcount\countUTFy
   9144 \newcount\countUTFz
   9145 
   9146 \gdef\UTFviiiTwoOctets#1#2{\expandafter
   9147    \UTFviiiDefined\csname u8:#1\string #2\endcsname}
   9148 %
   9149 \gdef\UTFviiiThreeOctets#1#2#3{\expandafter
   9150    \UTFviiiDefined\csname u8:#1\string #2\string #3\endcsname}
   9151 %
   9152 \gdef\UTFviiiFourOctets#1#2#3#4{\expandafter
   9153    \UTFviiiDefined\csname u8:#1\string #2\string #3\string #4\endcsname}
   9154 
   9155 \gdef\UTFviiiDefined#1{%
   9156   \ifx #1\relax
   9157     \message{\linenumber Unicode char \string #1 not defined for Texinfo}%
   9158   \else
   9159     \expandafter #1%
   9160   \fi
   9161 }
   9162 
   9163 \begingroup
   9164   \catcode`\~13
   9165   \catcode`\"12
   9166 
   9167   \def\UTFviiiLoop{%
   9168     \global\catcode\countUTFx\active
   9169     \uccode`\~\countUTFx
   9170     \uppercase\expandafter{\UTFviiiTmp}%
   9171     \advance\countUTFx by 1
   9172     \ifnum\countUTFx < \countUTFy
   9173       \expandafter\UTFviiiLoop
   9174     \fi}
   9175 
   9176   \countUTFx = "C2
   9177   \countUTFy = "E0
   9178   \def\UTFviiiTmp{%
   9179     \xdef~{\noexpand\UTFviiiTwoOctets\string~}}
   9180   \UTFviiiLoop
   9181 
   9182   \countUTFx = "E0
   9183   \countUTFy = "F0
   9184   \def\UTFviiiTmp{%
   9185     \xdef~{\noexpand\UTFviiiThreeOctets\string~}}
   9186   \UTFviiiLoop
   9187 
   9188   \countUTFx = "F0
   9189   \countUTFy = "F4
   9190   \def\UTFviiiTmp{%
   9191     \xdef~{\noexpand\UTFviiiFourOctets\string~}}
   9192   \UTFviiiLoop
   9193 \endgroup
   9194 
   9195 \begingroup
   9196   \catcode`\"=12
   9197   \catcode`\<=12
   9198   \catcode`\.=12
   9199   \catcode`\,=12
   9200   \catcode`\;=12
   9201   \catcode`\!=12
   9202   \catcode`\~=13
   9203 
   9204   \gdef\DeclareUnicodeCharacter#1#2{%
   9205     \countUTFz = "#1\relax
   9206     %\wlog{\space\space defining Unicode char U+#1 (decimal \the\countUTFz)}%
   9207     \begingroup
   9208       \parseXMLCharref
   9209       \def\UTFviiiTwoOctets##1##2{%
   9210         \csname u8:##1\string ##2\endcsname}%
   9211       \def\UTFviiiThreeOctets##1##2##3{%
   9212         \csname u8:##1\string ##2\string ##3\endcsname}%
   9213       \def\UTFviiiFourOctets##1##2##3##4{%
   9214         \csname u8:##1\string ##2\string ##3\string ##4\endcsname}%
   9215       \expandafter\expandafter\expandafter\expandafter
   9216        \expandafter\expandafter\expandafter
   9217        \gdef\UTFviiiTmp{#2}%
   9218     \endgroup}
   9219 
   9220   \gdef\parseXMLCharref{%
   9221     \ifnum\countUTFz < "A0\relax
   9222       \errhelp = \EMsimple
   9223       \errmessage{Cannot define Unicode char value < 00A0}%
   9224     \else\ifnum\countUTFz < "800\relax
   9225       \parseUTFviiiA,%
   9226       \parseUTFviiiB C\UTFviiiTwoOctets.,%
   9227     \else\ifnum\countUTFz < "10000\relax
   9228       \parseUTFviiiA;%
   9229       \parseUTFviiiA,%
   9230       \parseUTFviiiB E\UTFviiiThreeOctets.{,;}%
   9231     \else
   9232       \parseUTFviiiA;%
   9233       \parseUTFviiiA,%
   9234       \parseUTFviiiA!%
   9235       \parseUTFviiiB F\UTFviiiFourOctets.{!,;}%
   9236     \fi\fi\fi
   9237   }
   9238 
   9239   \gdef\parseUTFviiiA#1{%
   9240     \countUTFx = \countUTFz
   9241     \divide\countUTFz by 64
   9242     \countUTFy = \countUTFz
   9243     \multiply\countUTFz by 64
   9244     \advance\countUTFx by -\countUTFz
   9245     \advance\countUTFx by 128
   9246     \uccode `#1\countUTFx
   9247     \countUTFz = \countUTFy}
   9248 
   9249   \gdef\parseUTFviiiB#1#2#3#4{%
   9250     \advance\countUTFz by "#10\relax
   9251     \uccode `#3\countUTFz
   9252     \uppercase{\gdef\UTFviiiTmp{#2#3#4}}}
   9253 \endgroup
   9254 
   9255 \def\utfeightchardefs{%
   9256   \DeclareUnicodeCharacter{00A0}{\tie}
   9257   \DeclareUnicodeCharacter{00A1}{\exclamdown}
   9258   \DeclareUnicodeCharacter{00A3}{\pounds}
   9259   \DeclareUnicodeCharacter{00A8}{\"{ }}
   9260   \DeclareUnicodeCharacter{00A9}{\copyright}
   9261   \DeclareUnicodeCharacter{00AA}{\ordf}
   9262   \DeclareUnicodeCharacter{00AB}{\guillemetleft}
   9263   \DeclareUnicodeCharacter{00AD}{\-}
   9264   \DeclareUnicodeCharacter{00AE}{\registeredsymbol}
   9265   \DeclareUnicodeCharacter{00AF}{\={ }}
   9266 
   9267   \DeclareUnicodeCharacter{00B0}{\ringaccent{ }}
   9268   \DeclareUnicodeCharacter{00B4}{\'{ }}
   9269   \DeclareUnicodeCharacter{00B8}{\cedilla{ }}
   9270   \DeclareUnicodeCharacter{00BA}{\ordm}
   9271   \DeclareUnicodeCharacter{00BB}{\guillemetright}
   9272   \DeclareUnicodeCharacter{00BF}{\questiondown}
   9273 
   9274   \DeclareUnicodeCharacter{00C0}{\`A}
   9275   \DeclareUnicodeCharacter{00C1}{\'A}
   9276   \DeclareUnicodeCharacter{00C2}{\^A}
   9277   \DeclareUnicodeCharacter{00C3}{\~A}
   9278   \DeclareUnicodeCharacter{00C4}{\"A}
   9279   \DeclareUnicodeCharacter{00C5}{\AA}
   9280   \DeclareUnicodeCharacter{00C6}{\AE}
   9281   \DeclareUnicodeCharacter{00C7}{\cedilla{C}}
   9282   \DeclareUnicodeCharacter{00C8}{\`E}
   9283   \DeclareUnicodeCharacter{00C9}{\'E}
   9284   \DeclareUnicodeCharacter{00CA}{\^E}
   9285   \DeclareUnicodeCharacter{00CB}{\"E}
   9286   \DeclareUnicodeCharacter{00CC}{\`I}
   9287   \DeclareUnicodeCharacter{00CD}{\'I}
   9288   \DeclareUnicodeCharacter{00CE}{\^I}
   9289   \DeclareUnicodeCharacter{00CF}{\"I}
   9290 
   9291   \DeclareUnicodeCharacter{00D0}{\DH}
   9292   \DeclareUnicodeCharacter{00D1}{\~N}
   9293   \DeclareUnicodeCharacter{00D2}{\`O}
   9294   \DeclareUnicodeCharacter{00D3}{\'O}
   9295   \DeclareUnicodeCharacter{00D4}{\^O}
   9296   \DeclareUnicodeCharacter{00D5}{\~O}
   9297   \DeclareUnicodeCharacter{00D6}{\"O}
   9298   \DeclareUnicodeCharacter{00D8}{\O}
   9299   \DeclareUnicodeCharacter{00D9}{\`U}
   9300   \DeclareUnicodeCharacter{00DA}{\'U}
   9301   \DeclareUnicodeCharacter{00DB}{\^U}
   9302   \DeclareUnicodeCharacter{00DC}{\"U}
   9303   \DeclareUnicodeCharacter{00DD}{\'Y}
   9304   \DeclareUnicodeCharacter{00DE}{\TH}
   9305   \DeclareUnicodeCharacter{00DF}{\ss}
   9306 
   9307   \DeclareUnicodeCharacter{00E0}{\`a}
   9308   \DeclareUnicodeCharacter{00E1}{\'a}
   9309   \DeclareUnicodeCharacter{00E2}{\^a}
   9310   \DeclareUnicodeCharacter{00E3}{\~a}
   9311   \DeclareUnicodeCharacter{00E4}{\"a}
   9312   \DeclareUnicodeCharacter{00E5}{\aa}
   9313   \DeclareUnicodeCharacter{00E6}{\ae}
   9314   \DeclareUnicodeCharacter{00E7}{\cedilla{c}}
   9315   \DeclareUnicodeCharacter{00E8}{\`e}
   9316   \DeclareUnicodeCharacter{00E9}{\'e}
   9317   \DeclareUnicodeCharacter{00EA}{\^e}
   9318   \DeclareUnicodeCharacter{00EB}{\"e}
   9319   \DeclareUnicodeCharacter{00EC}{\`{\dotless{i}}}
   9320   \DeclareUnicodeCharacter{00ED}{\'{\dotless{i}}}
   9321   \DeclareUnicodeCharacter{00EE}{\^{\dotless{i}}}
   9322   \DeclareUnicodeCharacter{00EF}{\"{\dotless{i}}}
   9323 
   9324   \DeclareUnicodeCharacter{00F0}{\dh}
   9325   \DeclareUnicodeCharacter{00F1}{\~n}
   9326   \DeclareUnicodeCharacter{00F2}{\`o}
   9327   \DeclareUnicodeCharacter{00F3}{\'o}
   9328   \DeclareUnicodeCharacter{00F4}{\^o}
   9329   \DeclareUnicodeCharacter{00F5}{\~o}
   9330   \DeclareUnicodeCharacter{00F6}{\"o}
   9331   \DeclareUnicodeCharacter{00F8}{\o}
   9332   \DeclareUnicodeCharacter{00F9}{\`u}
   9333   \DeclareUnicodeCharacter{00FA}{\'u}
   9334   \DeclareUnicodeCharacter{00FB}{\^u}
   9335   \DeclareUnicodeCharacter{00FC}{\"u}
   9336   \DeclareUnicodeCharacter{00FD}{\'y}
   9337   \DeclareUnicodeCharacter{00FE}{\th}
   9338   \DeclareUnicodeCharacter{00FF}{\"y}
   9339 
   9340   \DeclareUnicodeCharacter{0100}{\=A}
   9341   \DeclareUnicodeCharacter{0101}{\=a}
   9342   \DeclareUnicodeCharacter{0102}{\u{A}}
   9343   \DeclareUnicodeCharacter{0103}{\u{a}}
   9344   \DeclareUnicodeCharacter{0104}{\ogonek{A}}
   9345   \DeclareUnicodeCharacter{0105}{\ogonek{a}}
   9346   \DeclareUnicodeCharacter{0106}{\'C}
   9347   \DeclareUnicodeCharacter{0107}{\'c}
   9348   \DeclareUnicodeCharacter{0108}{\^C}
   9349   \DeclareUnicodeCharacter{0109}{\^c}
   9350   \DeclareUnicodeCharacter{0118}{\ogonek{E}}
   9351   \DeclareUnicodeCharacter{0119}{\ogonek{e}}
   9352   \DeclareUnicodeCharacter{010A}{\dotaccent{C}}
   9353   \DeclareUnicodeCharacter{010B}{\dotaccent{c}}
   9354   \DeclareUnicodeCharacter{010C}{\v{C}}
   9355   \DeclareUnicodeCharacter{010D}{\v{c}}
   9356   \DeclareUnicodeCharacter{010E}{\v{D}}
   9357 
   9358   \DeclareUnicodeCharacter{0112}{\=E}
   9359   \DeclareUnicodeCharacter{0113}{\=e}
   9360   \DeclareUnicodeCharacter{0114}{\u{E}}
   9361   \DeclareUnicodeCharacter{0115}{\u{e}}
   9362   \DeclareUnicodeCharacter{0116}{\dotaccent{E}}
   9363   \DeclareUnicodeCharacter{0117}{\dotaccent{e}}
   9364   \DeclareUnicodeCharacter{011A}{\v{E}}
   9365   \DeclareUnicodeCharacter{011B}{\v{e}}
   9366   \DeclareUnicodeCharacter{011C}{\^G}
   9367   \DeclareUnicodeCharacter{011D}{\^g}
   9368   \DeclareUnicodeCharacter{011E}{\u{G}}
   9369   \DeclareUnicodeCharacter{011F}{\u{g}}
   9370 
   9371   \DeclareUnicodeCharacter{0120}{\dotaccent{G}}
   9372   \DeclareUnicodeCharacter{0121}{\dotaccent{g}}
   9373   \DeclareUnicodeCharacter{0124}{\^H}
   9374   \DeclareUnicodeCharacter{0125}{\^h}
   9375   \DeclareUnicodeCharacter{0128}{\~I}
   9376   \DeclareUnicodeCharacter{0129}{\~{\dotless{i}}}
   9377   \DeclareUnicodeCharacter{012A}{\=I}
   9378   \DeclareUnicodeCharacter{012B}{\={\dotless{i}}}
   9379   \DeclareUnicodeCharacter{012C}{\u{I}}
   9380   \DeclareUnicodeCharacter{012D}{\u{\dotless{i}}}
   9381 
   9382   \DeclareUnicodeCharacter{0130}{\dotaccent{I}}
   9383   \DeclareUnicodeCharacter{0131}{\dotless{i}}
   9384   \DeclareUnicodeCharacter{0132}{IJ}
   9385   \DeclareUnicodeCharacter{0133}{ij}
   9386   \DeclareUnicodeCharacter{0134}{\^J}
   9387   \DeclareUnicodeCharacter{0135}{\^{\dotless{j}}}
   9388   \DeclareUnicodeCharacter{0139}{\'L}
   9389   \DeclareUnicodeCharacter{013A}{\'l}
   9390 
   9391   \DeclareUnicodeCharacter{0141}{\L}
   9392   \DeclareUnicodeCharacter{0142}{\l}
   9393   \DeclareUnicodeCharacter{0143}{\'N}
   9394   \DeclareUnicodeCharacter{0144}{\'n}
   9395   \DeclareUnicodeCharacter{0147}{\v{N}}
   9396   \DeclareUnicodeCharacter{0148}{\v{n}}
   9397   \DeclareUnicodeCharacter{014C}{\=O}
   9398   \DeclareUnicodeCharacter{014D}{\=o}
   9399   \DeclareUnicodeCharacter{014E}{\u{O}}
   9400   \DeclareUnicodeCharacter{014F}{\u{o}}
   9401 
   9402   \DeclareUnicodeCharacter{0150}{\H{O}}
   9403   \DeclareUnicodeCharacter{0151}{\H{o}}
   9404   \DeclareUnicodeCharacter{0152}{\OE}
   9405   \DeclareUnicodeCharacter{0153}{\oe}
   9406   \DeclareUnicodeCharacter{0154}{\'R}
   9407   \DeclareUnicodeCharacter{0155}{\'r}
   9408   \DeclareUnicodeCharacter{0158}{\v{R}}
   9409   \DeclareUnicodeCharacter{0159}{\v{r}}
   9410   \DeclareUnicodeCharacter{015A}{\'S}
   9411   \DeclareUnicodeCharacter{015B}{\'s}
   9412   \DeclareUnicodeCharacter{015C}{\^S}
   9413   \DeclareUnicodeCharacter{015D}{\^s}
   9414   \DeclareUnicodeCharacter{015E}{\cedilla{S}}
   9415   \DeclareUnicodeCharacter{015F}{\cedilla{s}}
   9416 
   9417   \DeclareUnicodeCharacter{0160}{\v{S}}
   9418   \DeclareUnicodeCharacter{0161}{\v{s}}
   9419   \DeclareUnicodeCharacter{0162}{\cedilla{t}}
   9420   \DeclareUnicodeCharacter{0163}{\cedilla{T}}
   9421   \DeclareUnicodeCharacter{0164}{\v{T}}
   9422 
   9423   \DeclareUnicodeCharacter{0168}{\~U}
   9424   \DeclareUnicodeCharacter{0169}{\~u}
   9425   \DeclareUnicodeCharacter{016A}{\=U}
   9426   \DeclareUnicodeCharacter{016B}{\=u}
   9427   \DeclareUnicodeCharacter{016C}{\u{U}}
   9428   \DeclareUnicodeCharacter{016D}{\u{u}}
   9429   \DeclareUnicodeCharacter{016E}{\ringaccent{U}}
   9430   \DeclareUnicodeCharacter{016F}{\ringaccent{u}}
   9431 
   9432   \DeclareUnicodeCharacter{0170}{\H{U}}
   9433   \DeclareUnicodeCharacter{0171}{\H{u}}
   9434   \DeclareUnicodeCharacter{0174}{\^W}
   9435   \DeclareUnicodeCharacter{0175}{\^w}
   9436   \DeclareUnicodeCharacter{0176}{\^Y}
   9437   \DeclareUnicodeCharacter{0177}{\^y}
   9438   \DeclareUnicodeCharacter{0178}{\"Y}
   9439   \DeclareUnicodeCharacter{0179}{\'Z}
   9440   \DeclareUnicodeCharacter{017A}{\'z}
   9441   \DeclareUnicodeCharacter{017B}{\dotaccent{Z}}
   9442   \DeclareUnicodeCharacter{017C}{\dotaccent{z}}
   9443   \DeclareUnicodeCharacter{017D}{\v{Z}}
   9444   \DeclareUnicodeCharacter{017E}{\v{z}}
   9445 
   9446   \DeclareUnicodeCharacter{01C4}{D\v{Z}}
   9447   \DeclareUnicodeCharacter{01C5}{D\v{z}}
   9448   \DeclareUnicodeCharacter{01C6}{d\v{z}}
   9449   \DeclareUnicodeCharacter{01C7}{LJ}
   9450   \DeclareUnicodeCharacter{01C8}{Lj}
   9451   \DeclareUnicodeCharacter{01C9}{lj}
   9452   \DeclareUnicodeCharacter{01CA}{NJ}
   9453   \DeclareUnicodeCharacter{01CB}{Nj}
   9454   \DeclareUnicodeCharacter{01CC}{nj}
   9455   \DeclareUnicodeCharacter{01CD}{\v{A}}
   9456   \DeclareUnicodeCharacter{01CE}{\v{a}}
   9457   \DeclareUnicodeCharacter{01CF}{\v{I}}
   9458 
   9459   \DeclareUnicodeCharacter{01D0}{\v{\dotless{i}}}
   9460   \DeclareUnicodeCharacter{01D1}{\v{O}}
   9461   \DeclareUnicodeCharacter{01D2}{\v{o}}
   9462   \DeclareUnicodeCharacter{01D3}{\v{U}}
   9463   \DeclareUnicodeCharacter{01D4}{\v{u}}
   9464 
   9465   \DeclareUnicodeCharacter{01E2}{\={\AE}}
   9466   \DeclareUnicodeCharacter{01E3}{\={\ae}}
   9467   \DeclareUnicodeCharacter{01E6}{\v{G}}
   9468   \DeclareUnicodeCharacter{01E7}{\v{g}}
   9469   \DeclareUnicodeCharacter{01E8}{\v{K}}
   9470   \DeclareUnicodeCharacter{01E9}{\v{k}}
   9471 
   9472   \DeclareUnicodeCharacter{01F0}{\v{\dotless{j}}}
   9473   \DeclareUnicodeCharacter{01F1}{DZ}
   9474   \DeclareUnicodeCharacter{01F2}{Dz}
   9475   \DeclareUnicodeCharacter{01F3}{dz}
   9476   \DeclareUnicodeCharacter{01F4}{\'G}
   9477   \DeclareUnicodeCharacter{01F5}{\'g}
   9478   \DeclareUnicodeCharacter{01F8}{\`N}
   9479   \DeclareUnicodeCharacter{01F9}{\`n}
   9480   \DeclareUnicodeCharacter{01FC}{\'{\AE}}
   9481   \DeclareUnicodeCharacter{01FD}{\'{\ae}}
   9482   \DeclareUnicodeCharacter{01FE}{\'{\O}}
   9483   \DeclareUnicodeCharacter{01FF}{\'{\o}}
   9484 
   9485   \DeclareUnicodeCharacter{021E}{\v{H}}
   9486   \DeclareUnicodeCharacter{021F}{\v{h}}
   9487 
   9488   \DeclareUnicodeCharacter{0226}{\dotaccent{A}}
   9489   \DeclareUnicodeCharacter{0227}{\dotaccent{a}}
   9490   \DeclareUnicodeCharacter{0228}{\cedilla{E}}
   9491   \DeclareUnicodeCharacter{0229}{\cedilla{e}}
   9492   \DeclareUnicodeCharacter{022E}{\dotaccent{O}}
   9493   \DeclareUnicodeCharacter{022F}{\dotaccent{o}}
   9494 
   9495   \DeclareUnicodeCharacter{0232}{\=Y}
   9496   \DeclareUnicodeCharacter{0233}{\=y}
   9497   \DeclareUnicodeCharacter{0237}{\dotless{j}}
   9498 
   9499   \DeclareUnicodeCharacter{02DB}{\ogonek{ }}
   9500 
   9501   \DeclareUnicodeCharacter{1E02}{\dotaccent{B}}
   9502   \DeclareUnicodeCharacter{1E03}{\dotaccent{b}}
   9503   \DeclareUnicodeCharacter{1E04}{\udotaccent{B}}
   9504   \DeclareUnicodeCharacter{1E05}{\udotaccent{b}}
   9505   \DeclareUnicodeCharacter{1E06}{\ubaraccent{B}}
   9506   \DeclareUnicodeCharacter{1E07}{\ubaraccent{b}}
   9507   \DeclareUnicodeCharacter{1E0A}{\dotaccent{D}}
   9508   \DeclareUnicodeCharacter{1E0B}{\dotaccent{d}}
   9509   \DeclareUnicodeCharacter{1E0C}{\udotaccent{D}}
   9510   \DeclareUnicodeCharacter{1E0D}{\udotaccent{d}}
   9511   \DeclareUnicodeCharacter{1E0E}{\ubaraccent{D}}
   9512   \DeclareUnicodeCharacter{1E0F}{\ubaraccent{d}}
   9513 
   9514   \DeclareUnicodeCharacter{1E1E}{\dotaccent{F}}
   9515   \DeclareUnicodeCharacter{1E1F}{\dotaccent{f}}
   9516 
   9517   \DeclareUnicodeCharacter{1E20}{\=G}
   9518   \DeclareUnicodeCharacter{1E21}{\=g}
   9519   \DeclareUnicodeCharacter{1E22}{\dotaccent{H}}
   9520   \DeclareUnicodeCharacter{1E23}{\dotaccent{h}}
   9521   \DeclareUnicodeCharacter{1E24}{\udotaccent{H}}
   9522   \DeclareUnicodeCharacter{1E25}{\udotaccent{h}}
   9523   \DeclareUnicodeCharacter{1E26}{\"H}
   9524   \DeclareUnicodeCharacter{1E27}{\"h}
   9525 
   9526   \DeclareUnicodeCharacter{1E30}{\'K}
   9527   \DeclareUnicodeCharacter{1E31}{\'k}
   9528   \DeclareUnicodeCharacter{1E32}{\udotaccent{K}}
   9529   \DeclareUnicodeCharacter{1E33}{\udotaccent{k}}
   9530   \DeclareUnicodeCharacter{1E34}{\ubaraccent{K}}
   9531   \DeclareUnicodeCharacter{1E35}{\ubaraccent{k}}
   9532   \DeclareUnicodeCharacter{1E36}{\udotaccent{L}}
   9533   \DeclareUnicodeCharacter{1E37}{\udotaccent{l}}
   9534   \DeclareUnicodeCharacter{1E3A}{\ubaraccent{L}}
   9535   \DeclareUnicodeCharacter{1E3B}{\ubaraccent{l}}
   9536   \DeclareUnicodeCharacter{1E3E}{\'M}
   9537   \DeclareUnicodeCharacter{1E3F}{\'m}
   9538 
   9539   \DeclareUnicodeCharacter{1E40}{\dotaccent{M}}
   9540   \DeclareUnicodeCharacter{1E41}{\dotaccent{m}}
   9541   \DeclareUnicodeCharacter{1E42}{\udotaccent{M}}
   9542   \DeclareUnicodeCharacter{1E43}{\udotaccent{m}}
   9543   \DeclareUnicodeCharacter{1E44}{\dotaccent{N}}
   9544   \DeclareUnicodeCharacter{1E45}{\dotaccent{n}}
   9545   \DeclareUnicodeCharacter{1E46}{\udotaccent{N}}
   9546   \DeclareUnicodeCharacter{1E47}{\udotaccent{n}}
   9547   \DeclareUnicodeCharacter{1E48}{\ubaraccent{N}}
   9548   \DeclareUnicodeCharacter{1E49}{\ubaraccent{n}}
   9549 
   9550   \DeclareUnicodeCharacter{1E54}{\'P}
   9551   \DeclareUnicodeCharacter{1E55}{\'p}
   9552   \DeclareUnicodeCharacter{1E56}{\dotaccent{P}}
   9553   \DeclareUnicodeCharacter{1E57}{\dotaccent{p}}
   9554   \DeclareUnicodeCharacter{1E58}{\dotaccent{R}}
   9555   \DeclareUnicodeCharacter{1E59}{\dotaccent{r}}
   9556   \DeclareUnicodeCharacter{1E5A}{\udotaccent{R}}
   9557   \DeclareUnicodeCharacter{1E5B}{\udotaccent{r}}
   9558   \DeclareUnicodeCharacter{1E5E}{\ubaraccent{R}}
   9559   \DeclareUnicodeCharacter{1E5F}{\ubaraccent{r}}
   9560 
   9561   \DeclareUnicodeCharacter{1E60}{\dotaccent{S}}
   9562   \DeclareUnicodeCharacter{1E61}{\dotaccent{s}}
   9563   \DeclareUnicodeCharacter{1E62}{\udotaccent{S}}
   9564   \DeclareUnicodeCharacter{1E63}{\udotaccent{s}}
   9565   \DeclareUnicodeCharacter{1E6A}{\dotaccent{T}}
   9566   \DeclareUnicodeCharacter{1E6B}{\dotaccent{t}}
   9567   \DeclareUnicodeCharacter{1E6C}{\udotaccent{T}}
   9568   \DeclareUnicodeCharacter{1E6D}{\udotaccent{t}}
   9569   \DeclareUnicodeCharacter{1E6E}{\ubaraccent{T}}
   9570   \DeclareUnicodeCharacter{1E6F}{\ubaraccent{t}}
   9571 
   9572   \DeclareUnicodeCharacter{1E7C}{\~V}
   9573   \DeclareUnicodeCharacter{1E7D}{\~v}
   9574   \DeclareUnicodeCharacter{1E7E}{\udotaccent{V}}
   9575   \DeclareUnicodeCharacter{1E7F}{\udotaccent{v}}
   9576 
   9577   \DeclareUnicodeCharacter{1E80}{\`W}
   9578   \DeclareUnicodeCharacter{1E81}{\`w}
   9579   \DeclareUnicodeCharacter{1E82}{\'W}
   9580   \DeclareUnicodeCharacter{1E83}{\'w}
   9581   \DeclareUnicodeCharacter{1E84}{\"W}
   9582   \DeclareUnicodeCharacter{1E85}{\"w}
   9583   \DeclareUnicodeCharacter{1E86}{\dotaccent{W}}
   9584   \DeclareUnicodeCharacter{1E87}{\dotaccent{w}}
   9585   \DeclareUnicodeCharacter{1E88}{\udotaccent{W}}
   9586   \DeclareUnicodeCharacter{1E89}{\udotaccent{w}}
   9587   \DeclareUnicodeCharacter{1E8A}{\dotaccent{X}}
   9588   \DeclareUnicodeCharacter{1E8B}{\dotaccent{x}}
   9589   \DeclareUnicodeCharacter{1E8C}{\"X}
   9590   \DeclareUnicodeCharacter{1E8D}{\"x}
   9591   \DeclareUnicodeCharacter{1E8E}{\dotaccent{Y}}
   9592   \DeclareUnicodeCharacter{1E8F}{\dotaccent{y}}
   9593 
   9594   \DeclareUnicodeCharacter{1E90}{\^Z}
   9595   \DeclareUnicodeCharacter{1E91}{\^z}
   9596   \DeclareUnicodeCharacter{1E92}{\udotaccent{Z}}
   9597   \DeclareUnicodeCharacter{1E93}{\udotaccent{z}}
   9598   \DeclareUnicodeCharacter{1E94}{\ubaraccent{Z}}
   9599   \DeclareUnicodeCharacter{1E95}{\ubaraccent{z}}
   9600   \DeclareUnicodeCharacter{1E96}{\ubaraccent{h}}
   9601   \DeclareUnicodeCharacter{1E97}{\"t}
   9602   \DeclareUnicodeCharacter{1E98}{\ringaccent{w}}
   9603   \DeclareUnicodeCharacter{1E99}{\ringaccent{y}}
   9604 
   9605   \DeclareUnicodeCharacter{1EA0}{\udotaccent{A}}
   9606   \DeclareUnicodeCharacter{1EA1}{\udotaccent{a}}
   9607 
   9608   \DeclareUnicodeCharacter{1EB8}{\udotaccent{E}}
   9609   \DeclareUnicodeCharacter{1EB9}{\udotaccent{e}}
   9610   \DeclareUnicodeCharacter{1EBC}{\~E}
   9611   \DeclareUnicodeCharacter{1EBD}{\~e}
   9612 
   9613   \DeclareUnicodeCharacter{1ECA}{\udotaccent{I}}
   9614   \DeclareUnicodeCharacter{1ECB}{\udotaccent{i}}
   9615   \DeclareUnicodeCharacter{1ECC}{\udotaccent{O}}
   9616   \DeclareUnicodeCharacter{1ECD}{\udotaccent{o}}
   9617 
   9618   \DeclareUnicodeCharacter{1EE4}{\udotaccent{U}}
   9619   \DeclareUnicodeCharacter{1EE5}{\udotaccent{u}}
   9620 
   9621   \DeclareUnicodeCharacter{1EF2}{\`Y}
   9622   \DeclareUnicodeCharacter{1EF3}{\`y}
   9623   \DeclareUnicodeCharacter{1EF4}{\udotaccent{Y}}
   9624 
   9625   \DeclareUnicodeCharacter{1EF8}{\~Y}
   9626   \DeclareUnicodeCharacter{1EF9}{\~y}
   9627 
   9628   \DeclareUnicodeCharacter{2013}{--}
   9629   \DeclareUnicodeCharacter{2014}{---}
   9630   \DeclareUnicodeCharacter{2018}{\quoteleft}
   9631   \DeclareUnicodeCharacter{2019}{\quoteright}
   9632   \DeclareUnicodeCharacter{201A}{\quotesinglbase}
   9633   \DeclareUnicodeCharacter{201C}{\quotedblleft}
   9634   \DeclareUnicodeCharacter{201D}{\quotedblright}
   9635   \DeclareUnicodeCharacter{201E}{\quotedblbase}
   9636   \DeclareUnicodeCharacter{2022}{\bullet}
   9637   \DeclareUnicodeCharacter{2026}{\dots}
   9638   \DeclareUnicodeCharacter{2039}{\guilsinglleft}
   9639   \DeclareUnicodeCharacter{203A}{\guilsinglright}
   9640   \DeclareUnicodeCharacter{20AC}{\euro}
   9641 
   9642   \DeclareUnicodeCharacter{2192}{\expansion}
   9643   \DeclareUnicodeCharacter{21D2}{\result}
   9644 
   9645   \DeclareUnicodeCharacter{2212}{\minus}
   9646   \DeclareUnicodeCharacter{2217}{\point}
   9647   \DeclareUnicodeCharacter{2261}{\equiv}
   9648 }% end of \utfeightchardefs
   9649 
   9650 
   9651 % US-ASCII character definitions.
   9652 \def\asciichardefs{% nothing need be done
   9653    \relax
   9654 }
   9655 
   9656 % Make non-ASCII characters printable again for compatibility with
   9657 % existing Texinfo documents that may use them, even without declaring a
   9658 % document encoding.
   9659 %
   9660 \setnonasciicharscatcode \other
   9661 
   9662 
   9663 \message{formatting,}
   9664 
   9665 \newdimen\defaultparindent \defaultparindent = 15pt
   9666 
   9667 \chapheadingskip = 15pt plus 4pt minus 2pt
   9668 \secheadingskip = 12pt plus 3pt minus 2pt
   9669 \subsecheadingskip = 9pt plus 2pt minus 2pt
   9670 
   9671 % Prevent underfull vbox error messages.
   9672 \vbadness = 10000
   9673 
   9674 % Don't be very finicky about underfull hboxes, either.
   9675 \hbadness = 6666
   9676 
   9677 % Following George Bush, get rid of widows and orphans.
   9678 \widowpenalty=10000
   9679 \clubpenalty=10000
   9680 
   9681 % Use TeX 3.0's \emergencystretch to help line breaking, but if we're
   9682 % using an old version of TeX, don't do anything.  We want the amount of
   9683 % stretch added to depend on the line length, hence the dependence on
   9684 % \hsize.  We call this whenever the paper size is set.
   9685 %
   9686 \def\setemergencystretch{%
   9687   \ifx\emergencystretch\thisisundefined
   9688     % Allow us to assign to \emergencystretch anyway.
   9689     \def\emergencystretch{\dimen0}%
   9690   \else
   9691     \emergencystretch = .15\hsize
   9692   \fi
   9693 }
   9694 
   9695 % Parameters in order: 1) textheight; 2) textwidth;
   9696 % 3) voffset; 4) hoffset; 5) binding offset; 6) topskip;
   9697 % 7) physical page height; 8) physical page width.
   9698 %
   9699 % We also call \setleading{\textleading}, so the caller should define
   9700 % \textleading.  The caller should also set \parskip.
   9701 %
   9702 \def\internalpagesizes#1#2#3#4#5#6#7#8{%
   9703   \voffset = #3\relax
   9704   \topskip = #6\relax
   9705   \splittopskip = \topskip
   9706   %
   9707   \vsize = #1\relax
   9708   \advance\vsize by \topskip
   9709   \outervsize = \vsize
   9710   \advance\outervsize by 2\topandbottommargin
   9711   \pageheight = \vsize
   9712   %
   9713   \hsize = #2\relax
   9714   \outerhsize = \hsize
   9715   \advance\outerhsize by 0.5in
   9716   \pagewidth = \hsize
   9717   %
   9718   \normaloffset = #4\relax
   9719   \bindingoffset = #5\relax
   9720   %
   9721   \ifpdf
   9722     \pdfpageheight #7\relax
   9723     \pdfpagewidth #8\relax
   9724     % if we don't reset these, they will remain at "1 true in" of
   9725     % whatever layout pdftex was dumped with.
   9726     \pdfhorigin = 1 true in
   9727     \pdfvorigin = 1 true in
   9728   \fi
   9729   %
   9730   \setleading{\textleading}
   9731   %
   9732   \parindent = \defaultparindent
   9733   \setemergencystretch
   9734 }
   9735 
   9736 % @letterpaper (the default).
   9737 \def\letterpaper{{\globaldefs = 1
   9738   \parskip = 3pt plus 2pt minus 1pt
   9739   \textleading = 13.2pt
   9740   %
   9741   % If page is nothing but text, make it come out even.
   9742   \internalpagesizes{607.2pt}{6in}% that's 46 lines
   9743                     {\voffset}{.25in}%
   9744                     {\bindingoffset}{36pt}%
   9745                     {11in}{8.5in}%
   9746 }}
   9747 
   9748 % Use @smallbook to reset parameters for 7x9.25 trim size.
   9749 \def\smallbook{{\globaldefs = 1
   9750   \parskip = 2pt plus 1pt
   9751   \textleading = 12pt
   9752   %
   9753   \internalpagesizes{7.5in}{5in}%
   9754                     {-.2in}{0in}%
   9755                     {\bindingoffset}{16pt}%
   9756                     {9.25in}{7in}%
   9757   %
   9758   \lispnarrowing = 0.3in
   9759   \tolerance = 700
   9760   \hfuzz = 1pt
   9761   \contentsrightmargin = 0pt
   9762   \defbodyindent = .5cm
   9763 }}
   9764 
   9765 % Use @smallerbook to reset parameters for 6x9 trim size.
   9766 % (Just testing, parameters still in flux.)
   9767 \def\smallerbook{{\globaldefs = 1
   9768   \parskip = 1.5pt plus 1pt
   9769   \textleading = 12pt
   9770   %
   9771   \internalpagesizes{7.4in}{4.8in}%
   9772                     {-.2in}{-.4in}%
   9773                     {0pt}{14pt}%
   9774                     {9in}{6in}%
   9775   %
   9776   \lispnarrowing = 0.25in
   9777   \tolerance = 700
   9778   \hfuzz = 1pt
   9779   \contentsrightmargin = 0pt
   9780   \defbodyindent = .4cm
   9781 }}
   9782 
   9783 % Use @afourpaper to print on European A4 paper.
   9784 \def\afourpaper{{\globaldefs = 1
   9785   \parskip = 3pt plus 2pt minus 1pt
   9786   \textleading = 13.2pt
   9787   %
   9788   % Double-side printing via postscript on Laserjet 4050
   9789   % prints double-sided nicely when \bindingoffset=10mm and \hoffset=-6mm.
   9790   % To change the settings for a different printer or situation, adjust
   9791   % \normaloffset until the front-side and back-side texts align.  Then
   9792   % do the same for \bindingoffset.  You can set these for testing in
   9793   % your texinfo source file like this:
   9794   % @tex
   9795   % \global\normaloffset = -6mm
   9796   % \global\bindingoffset = 10mm
   9797   % @end tex
   9798   \internalpagesizes{673.2pt}{160mm}% that's 51 lines
   9799                     {\voffset}{\hoffset}%
   9800                     {\bindingoffset}{44pt}%
   9801                     {297mm}{210mm}%
   9802   %
   9803   \tolerance = 700
   9804   \hfuzz = 1pt
   9805   \contentsrightmargin = 0pt
   9806   \defbodyindent = 5mm
   9807 }}
   9808 
   9809 % Use @afivepaper to print on European A5 paper.
   9810 % From romildo (a] urano.iceb.ufop.br, 2 July 2000.
   9811 % He also recommends making @example and @lisp be small.
   9812 \def\afivepaper{{\globaldefs = 1
   9813   \parskip = 2pt plus 1pt minus 0.1pt
   9814   \textleading = 12.5pt
   9815   %
   9816   \internalpagesizes{160mm}{120mm}%
   9817                     {\voffset}{\hoffset}%
   9818                     {\bindingoffset}{8pt}%
   9819                     {210mm}{148mm}%
   9820   %
   9821   \lispnarrowing = 0.2in
   9822   \tolerance = 800
   9823   \hfuzz = 1.2pt
   9824   \contentsrightmargin = 0pt
   9825   \defbodyindent = 2mm
   9826   \tableindent = 12mm
   9827 }}
   9828 
   9829 % A specific text layout, 24x15cm overall, intended for A4 paper.
   9830 \def\afourlatex{{\globaldefs = 1
   9831   \afourpaper
   9832   \internalpagesizes{237mm}{150mm}%
   9833                     {\voffset}{4.6mm}%
   9834                     {\bindingoffset}{7mm}%
   9835                     {297mm}{210mm}%
   9836   %
   9837   % Must explicitly reset to 0 because we call \afourpaper.
   9838   \globaldefs = 0
   9839 }}
   9840 
   9841 % Use @afourwide to print on A4 paper in landscape format.
   9842 \def\afourwide{{\globaldefs = 1
   9843   \afourpaper
   9844   \internalpagesizes{241mm}{165mm}%
   9845                     {\voffset}{-2.95mm}%
   9846                     {\bindingoffset}{7mm}%
   9847                     {297mm}{210mm}%
   9848   \globaldefs = 0
   9849 }}
   9850 
   9851 % @pagesizes TEXTHEIGHT[,TEXTWIDTH]
   9852 % Perhaps we should allow setting the margins, \topskip, \parskip,
   9853 % and/or leading, also. Or perhaps we should compute them somehow.
   9854 %
   9855 \parseargdef\pagesizes{\pagesizesyyy #1,,\finish}
   9856 \def\pagesizesyyy#1,#2,#3\finish{{%
   9857   \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \hsize=#2\relax \fi
   9858   \globaldefs = 1
   9859   %
   9860   \parskip = 3pt plus 2pt minus 1pt
   9861   \setleading{\textleading}%
   9862   %
   9863   \dimen0 = #1\relax
   9864   \advance\dimen0 by \voffset
   9865   %
   9866   \dimen2 = \hsize
   9867   \advance\dimen2 by \normaloffset
   9868   %
   9869   \internalpagesizes{#1}{\hsize}%
   9870                     {\voffset}{\normaloffset}%
   9871                     {\bindingoffset}{44pt}%
   9872                     {\dimen0}{\dimen2}%
   9873 }}
   9874 
   9875 % Set default to letter.
   9876 %
   9877 \letterpaper
   9878 
   9879 
   9880 \message{and turning on texinfo input format.}
   9881 
   9882 \def^^L{\par} % remove \outer, so ^L can appear in an @comment
   9883 
   9884 % DEL is a comment character, in case @c does not suffice.
   9885 \catcode`\^^? = 14
   9886 
   9887 % Define macros to output various characters with catcode for normal text.
   9888 \catcode`\"=\other \def\normaldoublequote{"}
   9889 \catcode`\$=\other \def\normaldollar{$}%$ font-lock fix
   9890 \catcode`\+=\other \def\normalplus{+}
   9891 \catcode`\<=\other \def\normalless{<}
   9892 \catcode`\>=\other \def\normalgreater{>}
   9893 \catcode`\^=\other \def\normalcaret{^}
   9894 \catcode`\_=\other \def\normalunderscore{_}
   9895 \catcode`\|=\other \def\normalverticalbar{|}
   9896 \catcode`\~=\other \def\normaltilde{~}
   9897 
   9898 % This macro is used to make a character print one way in \tt
   9899 % (where it can probably be output as-is), and another way in other fonts,
   9900 % where something hairier probably needs to be done.
   9901 %
   9902 % #1 is what to print if we are indeed using \tt; #2 is what to print
   9903 % otherwise.  Since all the Computer Modern typewriter fonts have zero
   9904 % interword stretch (and shrink), and it is reasonable to expect all
   9905 % typewriter fonts to have this, we can check that font parameter.
   9906 %
   9907 \def\ifusingtt#1#2{\ifdim \fontdimen3\font=0pt #1\else #2\fi}
   9908 
   9909 % Same as above, but check for italic font.  Actually this also catches
   9910 % non-italic slanted fonts since it is impossible to distinguish them from
   9911 % italic fonts.  But since this is only used by $ and it uses \sl anyway
   9912 % this is not a problem.
   9913 \def\ifusingit#1#2{\ifdim \fontdimen1\font>0pt #1\else #2\fi}
   9914 
   9915 % Turn off all special characters except @
   9916 % (and those which the user can use as if they were ordinary).
   9917 % Most of these we simply print from the \tt font, but for some, we can
   9918 % use math or other variants that look better in normal text.
   9919 
   9920 \catcode`\"=\active
   9921 \def\activedoublequote{{\tt\char34}}
   9922 \let"=\activedoublequote
   9923 \catcode`\~=\active
   9924 \def~{{\tt\char126}}
   9925 \chardef\hat=`\^
   9926 \catcode`\^=\active
   9927 \def^{{\tt \hat}}
   9928 
   9929 \catcode`\_=\active
   9930 \def_{\ifusingtt\normalunderscore\_}
   9931 \let\realunder=_
   9932 % Subroutine for the previous macro.
   9933 \def\_{\leavevmode \kern.07em \vbox{\hrule width.3em height.1ex}\kern .07em }
   9934 
   9935 \catcode`\|=\active
   9936 \def|{{\tt\char124}}
   9937 \chardef \less=`\<
   9938 \catcode`\<=\active
   9939 \def<{{\tt \less}}
   9940 \chardef \gtr=`\>
   9941 \catcode`\>=\active
   9942 \def>{{\tt \gtr}}
   9943 \catcode`\+=\active
   9944 \def+{{\tt \char 43}}
   9945 \catcode`\$=\active
   9946 \def${\ifusingit{{\sl\$}}\normaldollar}%$ font-lock fix
   9947 
   9948 % If a .fmt file is being used, characters that might appear in a file
   9949 % name cannot be active until we have parsed the command line.
   9950 % So turn them off again, and have \everyjob (or @setfilename) turn them on.
   9951 % \otherifyactive is called near the end of this file.
   9952 \def\otherifyactive{\catcode`+=\other \catcode`\_=\other}
   9953 
   9954 % Used sometimes to turn off (effectively) the active characters even after
   9955 % parsing them.
   9956 \def\turnoffactive{%
   9957   \normalturnoffactive
   9958   \otherbackslash
   9959 }
   9960 
   9961 \catcode`\@=0
   9962 
   9963 % \backslashcurfont outputs one backslash character in current font,
   9964 % as in \char`\\.
   9965 \global\chardef\backslashcurfont=`\\
   9966 \global\let\rawbackslashxx=\backslashcurfont  % let existing .??s files work
   9967 
   9968 % \realbackslash is an actual character `\' with catcode other, and
   9969 % \doublebackslash is two of them (for the pdf outlines).
   9970 {\catcode`\\=\other @gdef@realbackslash{\} @gdef@doublebackslash{\\}}
   9971 
   9972 % In texinfo, backslash is an active character; it prints the backslash
   9973 % in fixed width font.
   9974 \catcode`\\=\active  % @ for escape char from now on.
   9975 
   9976 % The story here is that in math mode, the \char of \backslashcurfont
   9977 % ends up printing the roman \ from the math symbol font (because \char
   9978 % in math mode uses the \mathcode, and plain.tex sets
   9979 % \mathcode`\\="026E).  It seems better for @backslashchar{} to always
   9980 % print a typewriter backslash, hence we use an explicit \mathchar,
   9981 % which is the decimal equivalent of "715c (class 7, e.g., use \fam;
   9982 % ignored family value; char position "5C).  We can't use " for the
   9983 % usual hex value because it has already been made active.
   9984 @def@normalbackslash{{@tt @ifmmode @mathchar29020 @else @backslashcurfont @fi}}
   9985 @let@backslashchar = @normalbackslash % @backslashchar{} is for user documents.
   9986 
   9987 % On startup, @fixbackslash assigns:
   9988 %  @let \ = @normalbackslash
   9989 % \rawbackslash defines an active \ to do \backslashcurfont.
   9990 % \otherbackslash defines an active \ to be a literal `\' character with
   9991 % catcode other.  We switch back and forth between these.
   9992 @gdef@rawbackslash{@let\=@backslashcurfont}
   9993 @gdef@otherbackslash{@let\=@realbackslash}
   9994 
   9995 % Same as @turnoffactive except outputs \ as {\tt\char`\\} instead of
   9996 % the literal character `\'.
   9997 %
   9998 @def@normalturnoffactive{%
   9999   @let"=@normaldoublequote
   10000   @let$=@normaldollar %$ font-lock fix
   10001   @let+=@normalplus
   10002   @let<=@normalless
   10003   @let>=@normalgreater
   10004   @let\=@normalbackslash
   10005   @let^=@normalcaret
   10006   @let_=@normalunderscore
   10007   @let|=@normalverticalbar
   10008   @let~=@normaltilde
   10009   @markupsetuplqdefault
   10010   @markupsetuprqdefault
   10011   @unsepspaces
   10012 }
   10013 
   10014 % Make _ and + \other characters, temporarily.
   10015 % This is canceled by @fixbackslash.
   10016 @otherifyactive
   10017 
   10018 % If a .fmt file is being used, we don't want the `\input texinfo' to show up.
   10019 % That is what \eatinput is for; after that, the `\' should revert to printing
   10020 % a backslash.
   10021 %
   10022 @gdef@eatinput input texinfo{@fixbackslash}
   10023 @global@let\ = @eatinput
   10024 
   10025 % On the other hand, perhaps the file did not have a `\input texinfo'. Then
   10026 % the first `\' in the file would cause an error. This macro tries to fix
   10027 % that, assuming it is called before the first `\' could plausibly occur.
   10028 % Also turn back on active characters that might appear in the input
   10029 % file name, in case not using a pre-dumped format.
   10030 %
   10031 @gdef@fixbackslash{%
   10032   @ifx\@eatinput @let\ = @normalbackslash @fi
   10033   @catcode`+=@active
   10034   @catcode`@_=@active
   10035 }
   10036 
   10037 % Say @foo, not \foo, in error messages.
   10038 @escapechar = `@@
   10039 
   10040 % These (along with & and #) are made active for url-breaking, so need
   10041 % active definitions as the normal characters.
   10042 @def@normaldot{.}
   10043 @def@normalquest{?}
   10044 @def@normalslash{/}
   10045 
   10046 % These look ok in all fonts, so just make them not special.
   10047 % @hashchar{} gets its own user-level command, because of #line.
   10048 @catcode`@& = @other @def@normalamp{&}
   10049 @catcode`@# = @other @def@normalhash{#}
   10050 @catcode`@% = @other @def@normalpercent{%}
   10051 
   10052 @let @hashchar = @normalhash
   10053 
   10054 @c Finally, make ` and ' active, so that txicodequoteundirected and
   10055 @c txicodequotebacktick work right in, e.g., @w{@code{`foo'}}.  If we
   10056 @c don't make ` and ' active, @code will not get them as active chars.
   10057 @c Do this last of all since we use ` in the previous @catcode assignments.
   10058 @catcode`@'=@active
   10059 @catcode`@`=@active
   10060 @markupsetuplqdefault
   10061 @markupsetuprqdefault
   10062 
   10063 @c Local variables:
   10064 @c eval: (add-hook 'write-file-hooks 'time-stamp)
   10065 @c page-delimiter: "^\\\\message"
   10066 @c time-stamp-start: "def\\\\texinfoversion{"
   10067 @c time-stamp-format: "%:y-%02m-%02d.%02H"
   10068 @c time-stamp-end: "}"
   10069 @c End:
   10070 
   10071 @c vim:sw=2:
   10072 
   10073 @ignore
   10074    arch-tag: e1b36e32-c96e-4135-a41a-0b2efa2ea115
   10075 @end ignore
   10076