narrow: fix flaky behavior described in issue6150
This has been plaguing the CI for a good while, and it doesn't appear to have
an easy fix proposed yet. The solution in this change is to always do an
unambiguous (but expensive) lookup in case of comparison. This should always
be correct, albeit suboptimal.
Differential Revision: https://phab.mercurial-scm.org/D10034
Issue746: renaming files brought by the second parent of a merge was
broken.
Create source repository:
$ hg init t
$ cd t
$ echo a > a
$ hg ci -Am a
adding a
$ cd ..
Fork source repository:
$ hg clone t t2
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd t2
$ echo b > b
$ hg ci -Am b
adding b
Update source repository:
$ cd ../t
$ echo a >> a
$ hg ci -m a2
Merge repositories:
$ hg pull ../t2
pulling from ../t2
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files (+1 heads)
new changesets d2ae7f538514
1 local changesets published
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg merge
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st
M b
Rename b as c:
$ hg mv b c
$ hg st
A c
R b
Rename back c as b:
$ hg mv c b
$ hg st
M b
$ cd ..
Issue 1476: renaming a first parent file into another first parent
file while none of them belong to the second parent was broken
$ hg init repo1476
$ cd repo1476
$ echo a > a
$ hg ci -Am adda
adding a
$ echo b1 > b1
$ echo b2 > b2
$ hg ci -Am changea
adding b1
adding b2
$ hg up -C 0
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo c1 > c1
$ echo c2 > c2
$ hg ci -Am addcandd
adding c1
adding c2
created new head
Merge heads:
$ hg merge
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg mv -Af c1 c2
Commit issue 1476:
$ hg ci -m merge
$ hg log -r tip -C -v | grep copies
copies: c2 (c1)
$ hg rollback
repository tip rolled back to revision 2 (undo commit)
working directory now based on revisions 2 and 1
$ hg up -C .
2 files updated, 0 files merged, 2 files removed, 0 files unresolved
Merge heads again:
$ hg merge
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg mv -Af b1 b2
Commit issue 1476 with a rename on the other side:
$ hg ci -m merge
$ hg log -r tip -C -v | grep copies
copies: b2 (b1)
Test marking/unmarking copies in merge commit
$ hg copy --forget --at-rev . b2
abort: cannot mark/unmark copy in merge commit
[10]
$ hg copy --after --at-rev . b1 b2
abort: cannot mark/unmark copy in merge commit
[10]
$ cd ..