Zev Weiss wrote:
> I see 'reflags' being tested in Pexecute(), but I don't see it getting set anywhere

Oops, that somehow got lost during merging. Thanks for catching that. Omitting 
the initialization caused hurt performance due to a failure to use 
PCRE_MULTILINE but did not cause a correctness bug, so the tests didn't catch 
it. Fixed with the attached patch.