Lines Matching full:lookbehind
1023 similar to a lookbehind assertion
1024 .\" HTML <a href="#lookbehind">
1029 have to be of fixed length, as lookbehind assertions do. The use of \eK does
1218 PCRE does not allow \eC to appear in lookbehind assertions
1219 .\" HTML <a href="#lookbehind">
1224 the lookbehind.
2216 lookbehind assertion is needed to achieve the other effect.
2224 .\" HTML <a name="lookbehind"></a>
2225 .SS "Lookbehind assertions"
2228 Lookbehind assertions start with (?<= for positive assertions and (?<! for
2234 a lookbehind assertion are restricted such that all the strings it matches must
2245 are permitted only at the top level of a lookbehind assertion. This is an
2262 can be used instead of a lookbehind assertion to get round the fixed-length
2265 The implementation of lookbehind assertions is, for each alternative, to
2271 unit even in a UTF mode) to appear in lookbehind assertions, because it makes
2272 it impossible to calculate the length of the lookbehind. The \eX and \eR
2288 Possessive quantifiers can be used in conjunction with lookbehind assertions to
2309 string. The subsequent lookbehind assertion does a single test on the last four
2486 This may be a positive or negative lookahead or lookbehind assertion. Consider
