/[pcre]/code/trunk/doc/pcresyntax.3
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revision 210 by ph10, Wed Aug 8 14:24:50 2007 UTC revision 227 by ph10, Tue Aug 21 15:00:15 2007 UTC
# Line 351  Each top-level branch of a look behind m Line 351  Each top-level branch of a look behind m
351  .SH "BACKTRACKING CONTROL"  .SH "BACKTRACKING CONTROL"
352  .rs  .rs
353  .sp  .sp
354  The following act immediately they are reached:  The following act immediately they are reached:
355  .sp  .sp
356    (*ACCEPT)      force successful match    (*ACCEPT)      force successful match
357    (*FAIL)        force backtrack; synonym (*F)    (*FAIL)        force backtrack; synonym (*F)
358  .sp  .sp
359  The following act only when a subsequent match failure causes a backtrack to  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  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  afterwards. Those that advance the start-of-match point do so only if the
362  pattern is not anchored.  pattern is not anchored.
363  .sp  .sp
364    (*COMMIT)      overall failure, no advance of starting point    (*COMMIT)      overall failure, no advance of starting point
# Line 367  pattern is not anchored. Line 367  pattern is not anchored.
367    (*THEN)        local failure, backtrack to next alternation    (*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 "CALLOUTS"  .SH "CALLOUTS"
383  .rs  .rs
384  .sp  .sp
# Line 395  Cambridge CB2 3QH, England. Line 407  Cambridge CB2 3QH, England.
407  .rs  .rs
408  .sp  .sp
409  .nf  .nf
410  Last updated: 08 August 2007  Last updated: 21 August 2007
411  Copyright (c) 1997-2007 University of Cambridge.  Copyright (c) 1997-2007 University of Cambridge.
412  .fi  .fi

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