evolve: merge commit messages while resolving content-divergence (issue5877)
While resolving content-divergence, there can be divergence in commit messages
too which should be resolved.
This patch uses the hg's internal merge API's to merge commit messages of
divergent changesets with predecessor as the base.
In case of conflicts, we fallback to divergent's commit message which should be
changed in future. We should pop up the editor with the commit message and the
conflict markers and let user fix that.
Tests are added for the functionality added.
Set up some configs
$ cat >> $HGRCPATH <<EOF
> [extensions]
> rebase=
> EOF
$ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
Test the instability listing
$ hg init r2
$ cd r2
$ echo a > a && hg ci -Am a
adding a
$ echo b > b && hg ci -Am b
adding b
$ echo c > c && hg ci -Am c
adding c
$ hg up 0
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo a >> a && hg ci --amend -m a
2 new orphan changesets
$ hg evolve --list
d2ae7f538514: b
orphan: cb9a9f314b8b (obsolete parent)
177f92b77385: c
orphan: d2ae7f538514 (orphan parent)
$ cd ..
Test the bumpedness listing
$ hg init r3
$ cd r3
$ echo a > a && hg ci -Am a
adding a
$ echo b > b && hg ci --amend -m ab
$ hg phase --public --rev 0 --hidden
1 new phase-divergent changesets
$ hg evolve --list
88cc282e27fc: ab
phase-divergent: cb9a9f314b8b (immutable precursor)
$ cd ..
Test the divergence listing
$ hg init r1
$ cd r1
$ echo a > a && hg ci -Am a
adding a
$ hg up 0
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo b > b && hg ci -Am b
adding b
$ hg up 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo c > c && hg ci -Am c
adding c
created new head
$ hg up 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo d > d && hg ci -Am d
adding d
created new head
$ hg rebase -s 1 -d 2
rebasing 1:d2ae7f538514 "b"
$ hg rebase -s 1 -d 3 --hidden --config experimental.allowdivergence=True
rebasing 1:d2ae7f538514 "b"
2 new content-divergent changesets
$ hg evolve --list
c882616e9d84: b
content-divergent: a922b3733e98 (draft) (precursor d2ae7f538514)
a922b3733e98: b
content-divergent: c882616e9d84 (draft) (precursor d2ae7f538514)
$ hg evolve --list --rev c882616e9d84
c882616e9d84: b
content-divergent: a922b3733e98 (draft) (precursor d2ae7f538514)
$ hg phase -p a922b3733e98
$ hg evolve --list
c882616e9d84: b
content-divergent: a922b3733e98 (public) (precursor d2ae7f538514)
$ cd ..