/[pcre]/code/trunk/doc/pcresyntax.3
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revision 208 by ph10, Mon Aug 6 15:23:29 2007 UTC revision 231 by ph10, Tue Sep 11 11:15:33 2007 UTC
# Line 348  Each top-level branch of a look behind m Line 348  Each top-level branch of a look behind m
348    (?(assert)...  assertion condition    (?(assert)...  assertion condition
349  .  .
350  .  .
351    .SH "BACKTRACKING CONTROL"
352    .rs
353    .sp
354    The following act immediately they are reached:
355    .sp
356      (*ACCEPT)      force successful match
357      (*FAIL)        force backtrack; synonym (*F)
358    .sp
359    The following act only when a subsequent match failure causes a backtrack to
360    reach them. They all force a match failure, but they differ in what happens
361    afterwards. Those that advance the start-of-match point do so only if the
362    pattern is not anchored.
363    .sp
364      (*COMMIT)      overall failure, no advance of starting point
365      (*PRUNE)       advance to next starting character
366      (*SKIP)        advance start to current matching position
367      (*THEN)        local failure, backtrack to next alternation
368    .
369    .
370    .SH "NEWLINE CONVENTIONS"
371    .rs
372    .sp
373    These are recognized only at the very start of a pattern.
374    .sp
375      (*CR)
376      (*LF)
377      (*CRLF)
378      (*ANYCRLF)
379      (*ANY)
380    .
381    .
382    .SH "WHAT \eR MATCHES"
383    .rs
384    .sp
385    These are recognized only at the very start of a pattern.
386    .sp
387      (*BSR_ANYCRLF)
388      (*BSR_UNICODE)
389    .
390    .
391  .SH "CALLOUTS"  .SH "CALLOUTS"
392  .rs  .rs
393  .sp  .sp
# Line 376  Cambridge CB2 3QH, England. Line 416  Cambridge CB2 3QH, England.
416  .rs  .rs
417  .sp  .sp
418  .nf  .nf
419  Last updated: 06 August 2007  Last updated: 11 September 2007
420  Copyright (c) 1997-2007 University of Cambridge.  Copyright (c) 1997-2007 University of Cambridge.
421  .fi  .fi

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