Stephane Chazelas wrote:
Why would it make it slower. AFAICT, PCRE_MULTILINE *adds* some overhead.
After looking into it I now remember why PCRE_MULTILINE speeds things up. See: http://git.savannah.gnu.org/cgit/grep.git/commit/?id=f6603c4e1e04dbb87a7232c4b44acc6afdf65fef where using PCRE_MULTILINE sped up 'grep -P "z.*a"' by a factor of 220.
