https://bugs.exim.org/show_bug.cgi?id=1680
--- Comment #2 from David Gausmann <david.gausm...@measx.com> --- Hello Philip, thanks for your response. First, you are right, the intersection of those regular expression is not ^a\d+b$ I didn't knew that lookahead assertions allow dynamic length expressions (I still remember a "this is not fixed length" error message from PCRE; see bug #547 where is written that dynamic lenghts are not allowed, but I think that ticket only affects lookbehind assertions, so I probably jumbled something). Your suggestion using lookahead assertions could be a solution, but I would need to do some stuff before, because the user enters the regular expression and references like (?1) could exist in both regular expressions, which shall be intersected. I will test your suggestion. Thanks for your help! Kind Regards David Gausmann -- You are receiving this mail because: You are on the CC list for the bug. -- ## List details at https://lists.exim.org/mailman/listinfo/pcre-dev
