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http://bugs.exim.org/show_bug.cgi?id=1368 Summary: Easier to use function for multi-segment matching Product: PCRE Version: N/A Platform: All OS/Version: All Status: NEW Severity: wishlist Priority: medium Component: Code AssignedTo: [email protected] ReportedBy: [email protected] CC: [email protected] There are roughly various ways to do multi-segment matching: - Use PCRE_PARTIAL_HARD or PCRE_PARTIAL_SOFT - Combined with pcre_exec() or pcre_dfa_exec() As the pcrepartial manpage explains, there are some issues. Matching on the full subject string can give a different result than matching segment by segment. It's difficult to work around all the issues, and there are perhaps other issues not listed in the manpage. Therefore it would be nice to have a higher-level function to do multi-segment matching. Some thoughts: currently when doing a partial match, only a few pieces of information are returned when the end of the subject string is encountered: the offsets of the partial match (there are maybe other things returned, I didn't look in details the API). To continue the matching with the next segment, only the previous offsets are used. These offsets are not sufficient if we want exactly the same result as matching on the full subject string. So a general idea is to be able to stop the matching algorithm when the end of the string is encountered, and return a private data structure that contain all the information required to resume the algorithm where it stopped. But it's maybe really difficult to implement, I don't know. -- Configure bugmail: http://bugs.exim.org/userprefs.cgi?tab=email -- ## List details at https://lists.exim.org/mailman/listinfo/pcre-dev
