--- embedaddon/pcre/doc/pcrepartial.3 2013/07/22 08:25:56 1.1.1.4 +++ embedaddon/pcre/doc/pcrepartial.3 2014/06/15 19:46:04 1.1.1.5 @@ -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 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