Lines Matching full:expressions
88 * Extended regexps:: @command{egrep}-style regular expressions
90 * Perl regexps:: Perl-style regular expressions
103 * Regular Expressions:: Overview of regular expression syntax
131 Perl regexps:: Perl-style regular expressions
324 @cindex Extended regular expressions, choosing
325 @cindex @acronym{GNU} extensions, extended regular expressions
326 Use extended regular expressions rather than basic
327 regular expressions. Extended regexps are those that
331 @xref{Extended regexps, , Extended regular expressions}.
338 @cindex Perl-style regular expressions, choosing
339 @cindex @value{SSEDEXT}, Perl-style regular expressions
340 Use Perl-style regular expressions rather than basic
341 regular expressions. Perl-style regexps are extremely
344 Perl-style regular expressions}.
406 * Regular Expressions:: Overview of regular expression syntax
497 passed to the @code{s} command). Note that modifiers to regular expressions
504 @cindex Slash character, in regular expressions
516 @cindex Perl-style regular expressions, case-insensitive
527 @cindex Perl-style regular expressions, multiline
547 @cindex Perl-style regular expressions, single line
557 @cindex Perl-style regular expressions, extended
636 @node Regular Expressions
640 expressions (@dfn{regexp} for short). A regular expression
653 itself. The power of regular expressions comes from the
665 @cindex @acronym{GNU} extensions, to basic regular expressions
678 @cindex @acronym{GNU} extensions, to basic regular expressions
682 @cindex @acronym{GNU} extensions, to basic regular expressions
701 @cindex @acronym{GNU} extensions, to basic regular expressions
760 @cindex @code{POSIXLY_CORRECT} behavior, bracket expressions
773 @cindex @acronym{GNU} extensions, to basic regular expressions
775 parentheses to use complex alternative regular expressions.
971 @cindex Backreferences, in regular expressions
1081 @cindex Perl-style regular expressions, case-insensitive
1091 @cindex Perl-style regular expressions, multiline
1112 @cindex Perl-style regular expressions, single line
1122 @cindex Perl-style regular expressions, extended
1507 @section @acronym{GNU} Extensions for Escapes in Regular Expressions
1521 bracket expressions.}---that
1582 regular expressions:
1658 the regular expressions to be matched---this is a common
2532 regular expressions.}, assertions, and other types of
2542 regular expressions and those that @option{-R} recognizes.
2688 @cindex @acronym{GNU} extensions, to basic regular expressions
2697 expressions, @command{sed} interprets these escape sequences as special
2806 @appendix Extended regular expressions
2807 @cindex Extended regular expressions, syntax
2809 The only difference between basic and extended regular expressions is in
2811 and braces (@samp{@{@}}). While basic regular expressions require
2813 when using extended regular expressions you must escape them if
2820 becomes @samp{abc\?} when using extended regular expressions. It matches
2824 becomes @samp{c+} when using extended regular expressions. It matches
2828 becomes @samp{a@{3,@}} when using extended regular expressions. It matches
2832 becomes @samp{(abc)@{2,3@}} when using extended regular expressions. It
2836 becomes @samp{(abc*)\1} when using extended regular expressions.
2838 expressions.
2843 @appendix Perl-style regular expressions
2844 @cindex Perl-style regular expressions, syntax
2849 Perl introduced several extensions to regular expressions, some
2850 of them incompatible with the syntax of regular expressions
2928 @cindex Perl-style regular expressions, escaped sequences
2944 @cindex Perl-style regular expressions, backreferences
2991 @cindex Perl-style regular expressions, character classes
3012 @cindex Perl-style regular expressions, assertions
3056 @cindex Perl-style regular expressions, newlines
3082 @cindex Perl-style regular expressions, multiline
3094 @cindex Perl-style regular expressions, multiline
3100 @cindex Perl-style regular expressions, single line
3112 @cindex Perl-style regular expressions, character classes
3137 @cindex Perl-style regular expressions, case-insensitive
3144 @cindex Perl-style regular expressions, single line
3145 @cindex Perl-style regular expressions, multiline
3260 @cindex Perl-style regular expressions, toggling options
3261 @cindex Perl-style regular expressions, case-insensitive
3262 @cindex Perl-style regular expressions, multiline
3263 @cindex Perl-style regular expressions, single line
3264 @cindex Perl-style regular expressions, extended
3339 @cindex Perl-style regular expressions, non-capturing subpatterns
3396 @cindex Perl-style regular expressions, repetitions
3488 @cindex Perl-style regular expressions, stingy repetitions
3546 @cindex Perl-style regular expressions, single line
3578 @cindex Perl-style regular expressions, backreferences
3661 @cindex Perl-style regular expressions, assertions
3662 @cindex Perl-style regular expressions, asserting subpatterns
3672 @cindex Perl-style regular expressions, lookahead subpatterns
3701 @cindex Perl-style regular expressions, lookbehind subpatterns
3816 @cindex Perl-style regular expressions, non-backtracking subpatterns
3864 @cindex Perl-style regular expressions, lookbehind subpatterns
3950 @cindex Perl-style regular expressions, conditional subpatterns
3992 @cindex Perl-style regular expressions, lookahead subpatterns
4015 @cindex Perl-style regular expressions, recursive patterns
4016 @cindex Perl-style regular expressions, recursion
4024 expressions to recurse (amongst other things). It does this
4082 @cindex Perl-style regular expressions, comments
4089 @cindex Perl-style regular expressions, extended
