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http://bugs.exim.org/show_bug.cgi?id=1100 --- Comment #1 from Tom Hughes <[email protected]> 2011-03-25 14:42:02 --- Created an attachment (id=471) --> (http://bugs.exim.org/attachment.cgi?id=471) Patch to fix backtracking The problem is that when processing OP_EXTUNI in match() the backtracking does this to see if we have backtracked far enough: if (eptr-- == pp) break; /* Stop if tried at original pos */ The problem of course, is that simply decrementing by one will not move us backwards properly if the last character was a multibyte UTF-8 sequence - we need to call BACKCHAR to find the start of the previous character. The attached patch seems to fix things, although you may have a cleaner way of doing it. I would also note that, from a quick search through the source, there are probably similar problems in some of the other ops. -- Configure bugmail: http://bugs.exim.org/userprefs.cgi?tab=email -- ## List details at http://lists.exim.org/mailman/listinfo/pcre-dev
