Simmo Saan

This really needs to be fixed. I had to independently realize the same thing that the current behavior makes smart_importer completely useless: https://github.com/beancount/smart_importer/issues/149.

PCRE completely fails the tests because the regex flag handling works a bit differently. Also, PCRE has a different idea of [newline handling](http://www.pcre.org/original/doc/html/pcreposix.html#SEC4). Not only the behavioral change but PCRE...

I know I could but that basically means ditching most of the existing regex tests with PCRE as `string_regex_flags` is only needed to force some flags for pcreposix, while letting...

Is TCL's regex engine available as a separate C library? Does it act as a drop-in replacement for POSIX? These are two fundamental features that PCRE has which makes the...