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http://bugs.exim.org/show_bug.cgi?id=1100 --- Comment #9 from Tom Hughes <[email protected]> 2011-07-19 11:12:22 --- We were actually using \X as a convenient approximation for extended grapheme cluster ;-) Our use case is that our user interface is defined in terms of characters and when moving to Unicode we decided that an extended grapheme cluster was the appropriate thing to consider as being a character. So when we preprocess user supplied regular expressions (which use a 20+ year old syntax) into PCRE regular expressions we substitute "\X" for "." in an attempt to make "." match a character, aka an extended grapheme cluster. -- Configure bugmail: http://bugs.exim.org/userprefs.cgi?tab=email -- ## List details at https://lists.exim.org/mailman/listinfo/pcre-dev
