Mercurial > hg > mercurial-source
diff mercurial/match.py @ 27974:d500341e4f55
match: use re2 in readpatternfile if possible
This has a small, but measurable, effect on performance if a pattern
file is very large. In an artificial test with 200,000 lines of
pattern data, using re2 reduced read time by 200 milliseconds.
| author | Bryan O'Sullivan <bos@serpentine.com> |
|---|---|
| date | Thu, 10 Dec 2015 21:33:55 -0800 (2015-12-11) |
| parents | 1aee2ab0f902 |
| children | c59647c6694d |
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--- a/mercurial/match.py +++ b/mercurial/match.py @@ -654,9 +654,11 @@ if "#" in line: global _commentre if not _commentre: - _commentre = re.compile(r'((^|[^\\])(\\\\)*)#.*') + _commentre = util.re.compile(r'((?:^|[^\\])(?:\\\\)*)#.*') # remove comments prefixed by an even number of escapes - line = _commentre.sub(r'\1', line) + m = _commentre.search(line) + if m: + line = line[:m.end(1)] # fixup properly escaped comments that survived the above line = line.replace("\\#", "#") line = line.rstrip()