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Diffstat (limited to 'pcre/doc/pcrepartial.3')
| -rw-r--r-- | pcre/doc/pcrepartial.3 | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/pcre/doc/pcrepartial.3 b/pcre/doc/pcrepartial.3 index 4041838c3e9..14d0124f1c2 100644 --- a/pcre/doc/pcrepartial.3 +++ b/pcre/doc/pcrepartial.3 @@ -1,4 +1,4 @@ -.TH PCREPARTIAL 3 "20 February 2013" "PCRE 8.33" +.TH PCREPARTIAL 3 "02 July 2013" "PCRE 8.34" .SH NAME PCRE - Perl-compatible regular expressions .SH "PARTIAL MATCHING IN PCRE" @@ -280,6 +280,15 @@ Notice that when the match is complete, only the last part is shown; PCRE does not retain the previously partially-matched string. It is up to the calling program to do that if it needs to. .P +That means that, for an unanchored pattern, if a continued match fails, it is +not possible to try again at a new starting point. All this facility is capable +of doing is continuing with the previous match attempt. In the previous +example, if the second set of data is "ug23" the result is no match, even +though there would be a match for "aug23" if the entire string were given at +once. Depending on the application, this may or may not be what you want. +The only way to allow for starting again at the next character is to retain the +matched part of the subject and try a new complete match. +.P You can set the PCRE_PARTIAL_SOFT or PCRE_PARTIAL_HARD options with PCRE_DFA_RESTART to continue partial matching over multiple segments. This facility can be used to pass very long subject strings to the DFA matching @@ -462,6 +471,6 @@ Cambridge CB2 3QH, England. .rs .sp .nf -Last updated: 20 February 2013 +Last updated: 02 July 2013 Copyright (c) 1997-2013 University of Cambridge. .fi |