[Patch] Regex bracket matcher cache optimization

Tim Shen timshen91@gmail.com
Sat Jan 4 02:35:00 GMT 2014

The data structure _BracketMatcher (storing regex like [123a-z]) could
be quite slow mainly because of regex_traits. So a result of cache for
small range of inputs (char) sounds reasonable. It iterates all 256
inputs and calculate them at regex compile time.

Booted and tested under -m64 and -m32.


Tim Shen
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