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copies: add config option for writing copy metadata to file and/or changset...
copies: add config option for writing copy metadata to file and/or changset This introduces a config option that lets you choose to write copy metadata to the changeset extras instead of to filelog. There's also an option to write it to both places. I imagine that may possibly be useful when transitioning an existing repo. The copy metadata is stored as two fields in extras: one for copies since p1 and one for copies since p2. I may need to add more information later in order to make copy tracing faster. Specifically, I'm thinking out recording which files were added or removed so that copies._chaincopies() doesn't have to look at the manifest for that. But that would just be an optimization and that can be added once we know if it's necessary. I have also considered saving space by using replacing the destination file path by an index into the "files" list, but that can also be changed later (but before the feature is ready to release). Differential Revision: https://phab.mercurial-scm.org/D6183

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test-merge-commit.t
185 lines | 5.1 KiB | text/troff | Tads3Lexer
Check that renames are correctly saved by a commit after a merge
Test with the merge on 3 having the rename on the local parent
$ hg init a
$ cd a
$ echo line1 > foo
$ hg add foo
$ hg ci -m '0: add foo'
$ echo line2 >> foo
$ hg ci -m '1: change foo'
$ hg up -C 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg mv foo bar
$ rm bar
$ echo line0 > bar
$ echo line1 >> bar
$ hg ci -m '2: mv foo bar; change bar'
created new head
$ hg merge 1
merging bar and foo to bar
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat bar
line0
line1
line2
$ hg ci -m '3: merge with local rename'
$ hg debugindex bar
rev linkrev nodeid p1 p2
0 2 d35118874825 000000000000 000000000000
1 3 5345f5ab8abd 000000000000 d35118874825
$ hg debugrename bar
bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2
$ hg debugindex foo
rev linkrev nodeid p1 p2
0 0 690b295714ae 000000000000 000000000000
1 1 9e25c27b8757 690b295714ae 000000000000
Revert the content change from rev 2:
$ hg up -C 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm bar
$ echo line1 > bar
$ hg ci -m '4: revert content change from rev 2'
created new head
$ hg log --template '{rev}:{node|short} {parents}\n'
4:2263c1be0967 2:0f2ff26688b9
3:0555950ead28 2:0f2ff26688b9 1:5cd961e4045d
2:0f2ff26688b9 0:2665aaee66e9
1:5cd961e4045d
0:2665aaee66e9
This should use bar@rev2 as the ancestor:
$ hg --debug merge 3
searching for copies back to rev 1
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 0555950ead28
preserving bar for resolve of bar
starting 4 threads for background file closing (?)
bar: versions differ -> m (premerge)
picked tool ':merge' for bar (binary False symlink False changedelete False)
merging bar
my bar@2263c1be0967+ other bar@0555950ead28 ancestor bar@0f2ff26688b9
premerge successful
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat bar
line1
line2
$ hg ci -m '5: merge'
$ hg debugindex bar
rev linkrev nodeid p1 p2
0 2 d35118874825 000000000000 000000000000
1 3 5345f5ab8abd 000000000000 d35118874825
2 4 ff4b45017382 d35118874825 000000000000
3 5 3701b4893544 ff4b45017382 5345f5ab8abd
Same thing, but with the merge on 3 having the rename
on the remote parent:
$ cd ..
$ hg clone -U -r 1 -r 2 a b
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 2 files (+1 heads)
new changesets 2665aaee66e9:0f2ff26688b9
$ cd b
$ hg up -C 1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge 2
merging foo and bar to bar
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat bar
line0
line1
line2
$ hg ci -m '3: merge with remote rename'
$ hg debugindex bar
rev linkrev nodeid p1 p2
0 2 d35118874825 000000000000 000000000000
1 3 5345f5ab8abd 000000000000 d35118874825
$ hg debugrename bar
bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2
$ hg debugindex foo
rev linkrev nodeid p1 p2
0 0 690b295714ae 000000000000 000000000000
1 1 9e25c27b8757 690b295714ae 000000000000
Revert the content change from rev 2:
$ hg up -C 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm bar
$ echo line1 > bar
$ hg ci -m '4: revert content change from rev 2'
created new head
$ hg log --template '{rev}:{node|short} {parents}\n'
4:2263c1be0967 2:0f2ff26688b9
3:3ffa6b9e35f0 1:5cd961e4045d 2:0f2ff26688b9
2:0f2ff26688b9 0:2665aaee66e9
1:5cd961e4045d
0:2665aaee66e9
This should use bar@rev2 as the ancestor:
$ hg --debug merge 3
searching for copies back to rev 1
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 3ffa6b9e35f0
preserving bar for resolve of bar
starting 4 threads for background file closing (?)
bar: versions differ -> m (premerge)
picked tool ':merge' for bar (binary False symlink False changedelete False)
merging bar
my bar@2263c1be0967+ other bar@3ffa6b9e35f0 ancestor bar@0f2ff26688b9
premerge successful
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat bar
line1
line2
$ hg ci -m '5: merge'
$ hg debugindex bar
rev linkrev nodeid p1 p2
0 2 d35118874825 000000000000 000000000000
1 3 5345f5ab8abd 000000000000 d35118874825
2 4 ff4b45017382 d35118874825 000000000000
3 5 3701b4893544 ff4b45017382 5345f5ab8abd
$ cd ..