revlog: introduce a tiny mock of a revlog class
This will be used in various function doctest added in the next changesets.
The class seems small enough to live in the module directly.
revlog: _segmentspan computes the byte span of a segment
Refactor out this code to be used somewhere else in a next changeset
revlog: early return in _slicechunk when span is already small enough
If the full span is smaller than the minimum gap size we'll consider, we know we
won't do any slicing and we can return earlier.
revlog: early return in _slicechunk when density is already good
We don't need to do anything if we know we won't enter the second while loop.
Save the overhead of the first loop by returning earlier.
sparse-read: discard gap below 65K only
Testing on actual data shows that 65K is more efficient in both time and memory
than 256K.
sparse-read: target density of 50% instead of 25%
The target density value is wrong. The default target chain span is
4*text-length. However, the target max chain payload is 2*text-length. So
default target density should be 50% (2/4) not 25% (1/4).
grep: change default behaviour to search working directory files (BC)
With this patch, grep searches on the working directory by default
and looks for all files tracked by the working directory and greps on them.
### OLD BEHAVIOUR
$ hg init a
$ cd a
$ echo "some text">>file1
$ hg add file1
$ hg commit -m "adds file1"
$ hg mv file1 file2
$ hg grep "some"
`file2:1:some text`
`file1:0:some text`
This behaviour is undesirable since file1 is not in the current history and was
renamed as file2, so the second result was redundant and confusing.
### NEW BEHAVIOUR
$ hg init a
$ cd a
$ echo "some text">>file1
$ hg add file1
$ hg commit -m "adds file1"
$ hg mv file1 file2
$ hg grep "some"
`file2:
2147483647:some text`
Differential Revision: https://phab.mercurial-scm.org/D3826
patch: don't separate \r and \n when colorizing diff output
When displaying diffs, \r at the end of a line is treated as trailing
whitespace. This causes an ANSI escape code to be inserted between \r and \n.
Some programs, such as less since version 530 (maybe earlier, but at least not
version 487) displays ^M when it encounters a lone \r. This causes a lot of
noise in diff output on Windows, where \r\n is used to terminate lines.
We avoid that by treating both \n and \r\n as end of line when considering
trailing whitespace.
hook: add support for disabling the shell to native command translation
I think having it on by default is the right thing to do, but this is an escape
hatch if someone has a command that shouldn't be mangled. The inspiration is
the priority prefix. The translation does nothing on non Windows platforms, so
the default value is selected to avoid printing a useless note by default.