Mercurial > hg
view tests/test-editor-filename.t @ 36672:9e7b14caf67f
xdiff: remove patience and histogram diff algorithms
Patience diff is the normal diff algorithm, plus some greediness that
unconditionally matches common common unique lines. That means it is easy to
construct cases to let it generate suboptimal result, like:
```
open('a', 'w').write('\n'.join(list('a' + 'x' * 300 + 'u' + 'x' * 700 + 'a\n')))
open('b', 'w').write('\n'.join(list('b' + 'x' * 700 + 'u' + 'x' * 300 + 'b\n')))
```
Patience diff has been advertised as being able to generate better results for
some C code changes. However, the more scientific way to do that is the
indention heuristic [1].
Since patience diff could generate suboptimal result more easily and its
"better" diff feature could be replaced by the new indention heuristic, let's
just remove it and its variant histogram diff to simplify the code.
[1]: https://github.com/git/git/commit/433860f3d0beb0c6f205290bd16cda413148f098
Test Plan:
`gcc -fPIC *.c --shared -o xdiff.so` still builds.
Differential Revision: https://phab.mercurial-scm.org/D2573
author | Jun Wu <quark@fb.com> |
---|---|
date | Sat, 03 Mar 2018 10:39:55 -0800 |
parents | 4bf1889456f3 |
children | f802a75da585 |
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Test temp file used with an editor has the expected suffix. $ hg init Create an editor that writes its arguments to stdout and set it to $HGEDITOR. $ cat > editor.sh << EOF > echo "\$@" > exit 1 > EOF $ hg add editor.sh $ HGEDITOR="sh $TESTTMP/editor.sh" $ export HGEDITOR Verify that the path for a commit editor has the expected suffix. $ hg commit *.commit.hg.txt (glob) abort: edit failed: sh exited with status 1 [255] Verify that the path for a histedit editor has the expected suffix. $ cat >> $HGRCPATH <<EOF > [extensions] > rebase= > histedit= > EOF $ hg commit --message 'At least one commit for histedit.' $ hg histedit *.histedit.hg.txt (glob) abort: edit failed: sh exited with status 1 [255] Verify that when performing an action that has the side-effect of creating an editor for a diff, the file ends in .diff. $ echo 1 > one $ echo 2 > two $ hg add adding one adding two $ hg commit --interactive --config ui.interactive=true --config ui.interface=text << EOF > y > e > q > EOF diff --git a/one b/one new file mode 100644 examine changes to 'one'? [Ynesfdaq?] y @@ -0,0 +1,1 @@ +1 record change 1/2 to 'one'? [Ynesfdaq?] e *.diff (glob) editor exited with exit code 1 record change 1/2 to 'one'? [Ynesfdaq?] q abort: user quit [255]