Boost C++ Libraries: Ticket #10512: Syntax error in Regex not detected

martin.grieb@… — Wed, 17 Sep 2014 15:47:26 GMT

This was broken in 84371 . I regard this as bug, not as feature. "A}2" still raises an error as it should (but which is not consistent).

The documentation mentions {} as special characters, the "ignore error and treat this as literal string" behavior is not documented.

status changed; resolution set

John Maddock — Thu, 25 Sep 2014 10:56:23 GMT

status new → closed
resolution → wontfix

Sigh... we do what Perl does, this was changed in response to https://svn.boost.org/trac/boost/ticket/8569 even though I would personally prefer this to raise an error.

I've updated the docs, and changed trailing }'s to also be treated as literals.

martin.grieb@… — Thu, 25 Sep 2014 11:09:19 GMT

What about ECMAScript mode which is identical to Perl mode? Is the Perl behavior valid in ECMAScript mode? Would splitting ECMAScript mode from Perl mode (with different error handling as only difference) be a possible solution?

John Maddock — Thu, 25 Sep 2014 11:20:36 GMT

To be honest we don't really support ECMAScript as such (except as a subset of Perl). It would take quite a bit of work to figure out what needs to be disabled for a "strict" ECMAScript mode.