[Bug libstdc++/53622] C++11 regex captures extra characters

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53622

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Should be fixed by http://gcc.gnu.org/ml/gcc-cvs/2013-07/msg00643.html