view tests/test-bdiff.py.out @ 27440:ff305ab2e0d7

log: speed up hg log <file|folder>

This patch makes hg log <file|folder> faster by using changelog.readfiles
instead of changelog.read.
On our large repos for hg log <file|folder> -l5 operations that were taking:
- ~8s I see a 25% improvement
- ~15s, I see a 35% improvement
For recently modified folder/file, the difference is negligible as we don't
have to consider many revisions.

*** 'a\nc\n\n\n\n' 'a\nb\n\n\n'
*** 'a\nb\nc\n' 'a\nc\n'
*** '' ''
*** 'a\nb\nc' 'a\nb\nc'
*** 'a\nb\nc\nd\n' 'a\nd\n'
*** 'a\nb\nc\nd\n' 'a\nc\ne\n'
*** 'a\nb\nc\n' 'a\nc\n'
*** 'a\n' 'c\na\nb\n'
*** 'a\n' ''
*** 'a\n' 'b\nc\n'
*** 'a\n' 'c\na\n'
*** '' 'adjfkjdjksdhfksj'
*** '' 'ab'
*** '' 'abc'
*** 'a' 'a'
*** 'ab' 'ab'
*** 'abc' 'abc'
*** 'a\n' 'a\n'
*** 'a\nb' 'a\nb'
6 6 'y\n\n'
6 6 'y\n\n'
9 9 'y\n\n'
done
done