[PATCH v4] rebase: make sure merge state is cleaned up for no-op rebases (issue5494)

[Martin von Zweigbergk]

On Thu, May 18, 2017 at 2:18 PM, Martin von Zweigbergk
<martinvonz at google.com> wrote:
> On Thu, May 18, 2017 at 1:18 PM, Jeremy Fitzhardinge <jsgf at fb.com> wrote:
>> # HG changeset patch
>> # User Jeremy Fitzhardinge <jsgf at fb.com>
>> # Date 1495138685 25200
>> #      Thu May 18 13:18:05 2017 -0700
>> # Node ID 9cb61a4635f1a4a01e12ff9b6fecd6db81c8a7f3
>> # Parent  371f47ab1373be66072dfde447c93a81a6e5068f
>> rebase: make sure merge state is cleaned up for no-op rebases (issue5494)
>>
>> If a rebase ends up doing a no-op commit, make sure the merge state is still cleaned up.
>>
>> diff --git a/hgext/rebase.py b/hgext/rebase.py
>> --- a/hgext/rebase.py
>> +++ b/hgext/rebase.py
>> @@ -420,6 +420,11 @@
>>                                             editor=editor,
>>                                             keepbranches=self.keepbranchesf,
>>                                             date=self.date)
>> +                    if newnode is None:
>> +                        # If it ended up being a no-op commit, then the normal
>> +                        # merge state clean-up path doesn't happen, so do it here.
>
> test-check-code.t says this line is too long. I'll fix it in flight,
> but make sure you run it next time. I don't remember if you need

Oops, unfinished sentence. What I meant to say is that I don't
remember if you need to install anything for it to run.

>
>> +                        # Fix issue5494
>> +                        mergemod.mergestate.clean(repo)
>>                  else:
>>                      # Skip commit if we are collapsing
>>                      repo.dirstate.beginparentchange()
>> diff --git a/tests/test-rebase-interruptions.t b/tests/test-rebase-interruptions.t
>> --- a/tests/test-rebase-interruptions.t
>> +++ b/tests/test-rebase-interruptions.t
>
> Thanks for moving it here. Looks you missed my other two comments.
> I'll address them in flight.
>
>> @@ -272,3 +272,38 @@
>>    o  0:public 'A'
>>
>>    $ cd ..
>> +
>> +Make sure merge state is cleaned up after a no-op rebase merge (issue5494)
>> +  $ cat >> $HGRCPATH <<EOF
>> +  > [extensions]
>> +  > rebase=
>> +  > EOF
>> +  $ hg init repo
>> +  $ cd repo
>> +  $ echo a >> a
>> +  $ hg commit -qAm base
>> +  $ echo b >> a
>> +  $ hg commit -qm b
>> +  $ hg up .^
>
> test-check-code.t also wanted '.^' wrapped in quotes. Fixed in flight.
>
>> +  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: rebase of 1:fdaca8533b86 created no changes to commit
>> +  saved backup bundle to $TESTTMP/repo/.hg/strip-backup/fdaca8533b86-7fd70513-backup.hg (glob)
>> +  $ hg resolve --list
>> +  $ test -e .hg/merge
>
> And here it wanted -f instead. Also fixed in flight.
>
>> +  [1]
>> +
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