[PATCH][libcxx] regex: Support capturing parens inside lookahead assertions

[Howard Hinnant]

On Jul 20, 2013, at 6:41 PM, William Fisher <william.w.fisher at gmail.com> wrote:

> This patch fixes a bug where std::regex in ECMAScript mode was ignoring capture groups inside lookahead assertions. 
> 
> For example, matching /(?=(a))(a)/ to "a" should yield two captures: \1 = "a", \2 = "a"
> 
> The test cases are in lookahead_capture.cpp.
> 
> Thanks,
> Bill
> <lookahead_capture.cpp><lookahead_capture.patch>_______________________________________________
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Awesome job Bill!

Committed revision 186954.

Thanks,
Howard