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http://bugs.exim.org/show_bug.cgi?id=1336 Zoltan Herczeg <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #1 from Zoltan Herczeg <[email protected]> 2013-02-13 07:48:25 --- Since PCRE aims for Perl compatibility, I would not introduce new sequences. This may lead to incompatibility if Perl introduce a different escape sequence using the very same name. However, you can use recursions for such task: /(?(DEFINE) ([a-z][a-z0-9]+) )(?1),(?1)/ This pattern search two identifiers separated by a comma. You don't need to repeat the pattern for the identifier, it is represented by (?1), since it is the first capturing bracket. I am not sure you can use descriptive names here... You can also use /([a-z][a-z0-9]+),(?1)/ in this special case, but I also wanted to show you the (DEFINE) conditional block as well. -- Configure bugmail: http://bugs.exim.org/userprefs.cgi?tab=email -- ## List details at https://lists.exim.org/mailman/listinfo/pcre-dev
