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rust-dirstatemap: add `NonNormalEntries` class...
rust-dirstatemap: add `NonNormalEntries` class This fix introduces the same encapsulation as the `copymap`. There is no easy way of doing this any better for now. `hg up -r null && time HGRCPATH= HGMODULEPOLICY=rust+c hg up tip` on Mozilla Central, (not super recent, but it doesn't matter): Before: 7:44,08 total After: 1:03,23 total Pretty brutal regression! This is a graft on stable of cf1f8660e568 Differential Revision: https://phab.mercurial-scm.org/D8111

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test-issue4074.t
29 lines | 512 B | text/troff | Tads3Lexer
#require no-pure
A script to generate nasty diff worst-case scenarios:
$ cat > s.py <<EOF
> import random
> for x in range(100000):
> print
> if random.randint(0, 100) >= 50:
> x += 1
> print(hex(x))
> EOF
$ hg init a
$ cd a
Check in a big file:
$ "$PYTHON" ../s.py > a
$ hg ci -qAm0
Modify it:
$ "$PYTHON" ../s.py > a
Time a check-in, should never take more than 10 seconds user time:
$ hg ci --time -m1
time: real .* secs .user [0-9][.].* sys .* (re)