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rebase: don't use rebased node as dirstate p2 (BC)...
rebase: don't use rebased node as dirstate p2 (BC) When rebasing a node, we currently use the rebased node as p2 in the dirstate until just before we commit it (we then change to the desired parents). This p2 is visible to the user when the rebase gets interrupted because of merge conflicts. That can be useful to the user as a reminder of which commit is currently being rebased, but I believe it's incorrect for a few reasons: * I think the dirstate parents should be the ones that will be set when the commit is created. * I think having two parents means that you're merging those two commits, but when rebasing, you're generally grafting, not merging. * When rebasing a merge commit, we should use the two desired parents as dirstate parents (and we clearly can't have the rebased node as a third dirstate parent). * `hg graft` (and `hg update --merge`) sets only one parent and `hg rebase` should be consistent with that. I realize that this is a somewhat large user-visible change, but I think it's worth it because it will simplify things quite a bit. Differential Revision: https://phab.mercurial-scm.org/D7827
Martin von Zweigbergk - - Load All Authors

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test-rebase-interruptions.t
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$ cat >> $HGRCPATH <<EOF
> [extensions]
> rebase=
>
> [phases]
> publish=False
>
> [alias]
> tglog = log -G --template "{rev}: {node|short} '{desc}' {branches}\n"
> tglogp = log -G --template "{rev}: {node|short} {phase} '{desc}' {branches}\n"
> EOF
$ hg init a
$ cd a
$ echo A > A
$ hg ci -Am A
adding A
$ echo B > B
$ hg ci -Am B
adding B
$ echo C >> A
$ hg ci -m C
$ hg up -q -C 0
$ echo D >> A
$ hg ci -m D
created new head
$ echo E > E
$ hg ci -Am E
adding E
$ cd ..
Changes during an interruption - continue:
$ hg clone -q -u . a a1
$ cd a1
$ hg tglog
@ 4: ae36e8e3dfd7 'E'
|
o 3: 46b37eabc604 'D'
|
| o 2: 965c486023db 'C'
| |
| o 1: 27547f69f254 'B'
|/
o 0: 4a2df7238c3b 'A'
Rebasing B onto E:
$ hg rebase -s 1 -d 4
rebasing 1:27547f69f254 "B"
rebasing 2:965c486023db "C"
merging A
warning: conflicts while merging A! (edit, then use 'hg resolve --mark')
unresolved conflicts (see hg resolve, then hg rebase --continue)
[1]
Force a commit on C during the interruption:
$ hg up -q -C 2 --config 'extensions.rebase=!'
$ echo 'Extra' > Extra
$ hg add Extra
$ hg ci -m 'Extra' --config 'extensions.rebase=!'
Force this commit onto secret phase
$ hg phase --force --secret 6
$ hg tglogp
@ 6: deb5d2f93d8b secret 'Extra'
|
| o 5: 45396c49d53b draft 'B'
| |
| o 4: ae36e8e3dfd7 draft 'E'
| |
| o 3: 46b37eabc604 draft 'D'
| |
o | 2: 965c486023db draft 'C'
| |
o | 1: 27547f69f254 draft 'B'
|/
o 0: 4a2df7238c3b draft 'A'
Resume the rebasing:
$ hg rebase --continue
already rebased 1:27547f69f254 "B" as 45396c49d53b
rebasing 2:965c486023db "C"
merging A
warning: conflicts while merging A! (edit, then use 'hg resolve --mark')
unresolved conflicts (see hg resolve, then hg rebase --continue)
[1]
Solve the conflict and go on:
$ echo 'conflict solved' > A
$ rm A.orig
$ hg resolve -m A
(no more unresolved files)
continue: hg rebase --continue
$ hg rebase --continue
already rebased 1:27547f69f254 "B" as 45396c49d53b
rebasing 2:965c486023db "C"
warning: orphaned descendants detected, not stripping 27547f69f254, 965c486023db
$ hg tglogp
o 7: d2d25e26288e draft 'C'
|
| o 6: deb5d2f93d8b secret 'Extra'
| |
o | 5: 45396c49d53b draft 'B'
| |
@ | 4: ae36e8e3dfd7 draft 'E'
| |
o | 3: 46b37eabc604 draft 'D'
| |
| o 2: 965c486023db draft 'C'
| |
| o 1: 27547f69f254 draft 'B'
|/
o 0: 4a2df7238c3b draft 'A'
$ cd ..
Changes during an interruption - abort:
$ hg clone -q -u . a a2
$ cd a2
$ hg tglog
@ 4: ae36e8e3dfd7 'E'
|
o 3: 46b37eabc604 'D'
|
| o 2: 965c486023db 'C'
| |
| o 1: 27547f69f254 'B'
|/
o 0: 4a2df7238c3b 'A'
Rebasing B onto E:
$ hg rebase -s 1 -d 4
rebasing 1:27547f69f254 "B"
rebasing 2:965c486023db "C"
merging A
warning: conflicts while merging A! (edit, then use 'hg resolve --mark')
unresolved conflicts (see hg resolve, then hg rebase --continue)
[1]
Force a commit on B' during the interruption:
$ hg up -q -C 5 --config 'extensions.rebase=!'
$ echo 'Extra' > Extra
$ hg add Extra
$ hg ci -m 'Extra' --config 'extensions.rebase=!'
$ hg tglog
@ 6: 402ee3642b59 'Extra'
|
o 5: 45396c49d53b 'B'
|
o 4: ae36e8e3dfd7 'E'
|
o 3: 46b37eabc604 'D'
|
| o 2: 965c486023db 'C'
| |
| o 1: 27547f69f254 'B'
|/
o 0: 4a2df7238c3b 'A'
Abort the rebasing:
$ hg rebase --abort
warning: new changesets detected on destination branch, can't strip
rebase aborted
$ hg tglog
@ 6: 402ee3642b59 'Extra'
|
o 5: 45396c49d53b 'B'
|
o 4: ae36e8e3dfd7 'E'
|
o 3: 46b37eabc604 'D'
|
| o 2: 965c486023db 'C'
| |
| o 1: 27547f69f254 'B'
|/
o 0: 4a2df7238c3b 'A'
$ cd ..
Changes during an interruption - abort (again):
$ hg clone -q -u . a a3
$ cd a3
$ hg tglogp
@ 4: ae36e8e3dfd7 draft 'E'
|
o 3: 46b37eabc604 draft 'D'
|
| o 2: 965c486023db draft 'C'
| |
| o 1: 27547f69f254 draft 'B'
|/
o 0: 4a2df7238c3b draft 'A'
Rebasing B onto E:
$ hg rebase -s 1 -d 4
rebasing 1:27547f69f254 "B"
rebasing 2:965c486023db "C"
merging A
warning: conflicts while merging A! (edit, then use 'hg resolve --mark')
unresolved conflicts (see hg resolve, then hg rebase --continue)
[1]
Change phase on B and B'
$ hg up -q -C 5 --config 'extensions.rebase=!'
$ hg phase --public 1
$ hg phase --public 5
$ hg phase --secret -f 2
$ hg tglogp
@ 5: 45396c49d53b public 'B'
|
o 4: ae36e8e3dfd7 public 'E'
|
o 3: 46b37eabc604 public 'D'
|
| o 2: 965c486023db secret 'C'
| |
| o 1: 27547f69f254 public 'B'
|/
o 0: 4a2df7238c3b public 'A'
Abort the rebasing:
$ hg rebase --abort
warning: can't clean up public changesets 45396c49d53b
rebase aborted
$ hg tglogp
@ 5: 45396c49d53b public 'B'
|
o 4: ae36e8e3dfd7 public 'E'
|
o 3: 46b37eabc604 public 'D'
|
| o 2: 965c486023db secret 'C'
| |
| o 1: 27547f69f254 public 'B'
|/
o 0: 4a2df7238c3b public 'A'
Test rebase interrupted by hooks
$ hg up 2
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo F > F
$ hg add F
$ hg ci -m F
$ cd ..
(precommit version)
$ cp -R a3 hook-precommit
$ cd hook-precommit
$ hg rebase --source 2 --dest 5 --tool internal:other --config 'hooks.precommit=hg status | grep "M A"'
rebasing 2:965c486023db "C"
M A
rebasing 6:a0b2430ebfb8 "F" (tip)
abort: precommit hook exited with status 1
[255]
$ hg tglogp
@ 7: 401ccec5e39f secret 'C'
|
| o 6: a0b2430ebfb8 secret 'F'
| |
o | 5: 45396c49d53b public 'B'
| |
o | 4: ae36e8e3dfd7 public 'E'
| |
o | 3: 46b37eabc604 public 'D'
| |
| o 2: 965c486023db secret 'C'
| |
| o 1: 27547f69f254 public 'B'
|/
o 0: 4a2df7238c3b public 'A'
$ hg rebase --continue
already rebased 2:965c486023db "C" as 401ccec5e39f
rebasing 6:a0b2430ebfb8 "F"
saved backup bundle to $TESTTMP/hook-precommit/.hg/strip-backup/965c486023db-aa6250e7-rebase.hg
$ hg tglogp
@ 6: 6e92a149ac6b secret 'F'
|
o 5: 401ccec5e39f secret 'C'
|
o 4: 45396c49d53b public 'B'
|
o 3: ae36e8e3dfd7 public 'E'
|
o 2: 46b37eabc604 public 'D'
|
| o 1: 27547f69f254 public 'B'
|/
o 0: 4a2df7238c3b public 'A'
$ cd ..
(pretxncommit version)
$ cp -R a3 hook-pretxncommit
$ cd hook-pretxncommit
$ hg rebase --source 2 --dest 5 --tool internal:other \
> --config 'hooks.tonative.pretxncommit=True' --config 'hooks.pretxncommit=hg log -r $HG_NODE | grep "summary: C"'
rebasing 2:965c486023db "C"
summary: C
rebasing 6:a0b2430ebfb8 "F" (tip)
transaction abort!
rollback completed
abort: pretxncommit hook exited with status 1
[255]
$ hg tglogp
@ 7: 401ccec5e39f secret 'C'
|
| o 6: a0b2430ebfb8 secret 'F'
| |
o | 5: 45396c49d53b public 'B'
| |
o | 4: ae36e8e3dfd7 public 'E'
| |
o | 3: 46b37eabc604 public 'D'
| |
| o 2: 965c486023db secret 'C'
| |
| o 1: 27547f69f254 public 'B'
|/
o 0: 4a2df7238c3b public 'A'
$ hg rebase --continue
already rebased 2:965c486023db "C" as 401ccec5e39f
rebasing 6:a0b2430ebfb8 "F"
saved backup bundle to $TESTTMP/hook-pretxncommit/.hg/strip-backup/965c486023db-aa6250e7-rebase.hg
$ hg tglogp
@ 6: 6e92a149ac6b secret 'F'
|
o 5: 401ccec5e39f secret 'C'
|
o 4: 45396c49d53b public 'B'
|
o 3: ae36e8e3dfd7 public 'E'
|
o 2: 46b37eabc604 public 'D'
|
| o 1: 27547f69f254 public 'B'
|/
o 0: 4a2df7238c3b public 'A'
$ cd ..
(pretxnclose version)
$ cp -R a3 hook-pretxnclose
$ cd hook-pretxnclose
$ hg rebase --source 2 --dest 5 --tool internal:other --config 'hooks.pretxnclose=hg log -r tip | grep "summary: C"'
rebasing 2:965c486023db "C"
summary: C
rebasing 6:a0b2430ebfb8 "F" (tip)
transaction abort!
rollback completed
abort: pretxnclose hook exited with status 1
[255]
$ hg tglogp
@ 7: 401ccec5e39f secret 'C'
|
| o 6: a0b2430ebfb8 secret 'F'
| |
o | 5: 45396c49d53b public 'B'
| |
o | 4: ae36e8e3dfd7 public 'E'
| |
o | 3: 46b37eabc604 public 'D'
| |
| o 2: 965c486023db secret 'C'
| |
| o 1: 27547f69f254 public 'B'
|/
o 0: 4a2df7238c3b public 'A'
$ hg rebase --continue
already rebased 2:965c486023db "C" as 401ccec5e39f
rebasing 6:a0b2430ebfb8 "F"
saved backup bundle to $TESTTMP/hook-pretxnclose/.hg/strip-backup/965c486023db-aa6250e7-rebase.hg
$ hg tglogp
@ 6: 6e92a149ac6b secret 'F'
|
o 5: 401ccec5e39f secret 'C'
|
o 4: 45396c49d53b public 'B'
|
o 3: ae36e8e3dfd7 public 'E'
|
o 2: 46b37eabc604 public 'D'
|
| o 1: 27547f69f254 public 'B'
|/
o 0: 4a2df7238c3b public 'A'
$ cd ..
Make sure merge state is cleaned up after a no-op rebase merge (issue5494)
$ hg init repo
$ cd repo
$ echo a > a
$ hg commit -qAm base
$ echo b >> a
$ hg commit -qm b
$ hg up '.^'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo c >> a
$ hg commit -qm c
$ hg rebase -s 1 -d 2 --noninteractive
rebasing 1:fdaca8533b86 "b"
merging a
warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
unresolved conflicts (see hg resolve, then hg rebase --continue)
[1]
$ echo a > a
$ echo c >> a
$ hg resolve --mark a
(no more unresolved files)
continue: hg rebase --continue
$ hg rebase --continue
rebasing 1:fdaca8533b86 "b"
note: not rebasing 1:fdaca8533b86 "b", its destination already has all its changes
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/fdaca8533b86-7fd70513-rebase.hg
$ hg resolve --list
$ test -d .hg/merge
[1]
Now try again with --collapse
$ hg unbundle -q .hg/strip-backup/fdaca8533b86-7fd70513-rebase.hg
$ hg rebase -s 2 -d 1 --noninteractive --collapse
rebasing 2:fdaca8533b86 "b" (tip)
merging a
warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
unresolved conflicts (see hg resolve, then hg rebase --continue)
[1]
$ echo a > a
$ echo c >> a
$ hg resolve --mark a
(no more unresolved files)
continue: hg rebase --continue
$ hg rebase --continue
rebasing 2:fdaca8533b86 "b" (tip)
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/fdaca8533b86-7fd70513-rebase.hg
$ hg resolve --list
$ test -d .hg/merge
[1]