merge: move almost all change/delete conflicts to resolve phase (BC) (API)
We have finally laid all the groundwork to make this happen.
The only change/delete conflicts that haven't been moved are .hgsubstate
conflicts. Those are trickier to deal with and well outside the scope of this
series.
We add comprehensive testing not just for the initial selections but also for
re-resolves and all possible dirstate transitions caused by merge tools. That
testing managed to shake out several bugs in the way we were handling dirstate
transitions.
The other test changes are because we now treat change/delete conflicts as
proper merges, and increment the 'merged' counter rather than the 'updated'
counter. I believe this is the right approach here.
For third-party extensions, if they're interacting with filemerge code they
might have to deal with an absentfilectx rather than a regular filectx.
Still to come:
- add a 'leave unresolved' option to merges
- change the default for non-interactive change/delete conflicts to be 'leave
unresolved'
- add debug output to go alongside debug outputs for binary and symlink file
merges
Setup extension:
$ cat <<EOF >> $HGRCPATH
> [extensions]
> mq =
> [mq]
> git = keep
> EOF
Test merge with mq changeset as the second parent:
$ hg init m
$ cd m
$ touch a b c
$ hg add a
$ hg commit -m a
$ hg add b
$ hg qnew -d "0 0" b
$ hg update 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg add c
$ hg commit -m c
created new head
$ hg merge
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg commit -m merge
abort: cannot commit over an applied mq patch
[255]
$ cd ..
Issue529: mq aborts when merging patch deleting files
$ checkundo()
> {
> if [ -f .hg/store/undo ]; then
> echo ".hg/store/undo still exists"
> fi
> }
Commit two dummy files in "init" changeset:
$ hg init t
$ cd t
$ echo a > a
$ echo b > b
$ hg ci -Am init
adding a
adding b
$ hg tag -l init
Create a patch removing a:
$ hg qnew rm_a
$ hg rm a
$ hg qrefresh -m "rm a"
Save the patch queue so we can merge it later:
$ hg qsave -c -e
copy $TESTTMP/t/.hg/patches to $TESTTMP/t/.hg/patches.1 (glob)
$ checkundo
Update b and commit in an "update" changeset:
$ hg up -C init
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo b >> b
$ hg st
M b
$ hg ci -m update
created new head
# Here, qpush used to abort with :
# The system cannot find the file specified => a
$ hg manifest
a
b
$ hg qpush -a -m
merging with queue at: $TESTTMP/t/.hg/patches.1 (glob)
applying rm_a
now at: rm_a
$ checkundo
$ hg manifest
b
Ensure status is correct after merge:
$ hg qpop -a
popping rm_a
popping .hg.patches.merge.marker
patch queue now empty
$ cd ..
Classic MQ merge sequence *with an explicit named queue*:
$ hg init t2
$ cd t2
$ echo '[diff]' > .hg/hgrc
$ echo 'nodates = 1' >> .hg/hgrc
$ echo a > a
$ hg ci -Am init
adding a
$ echo b > a
$ hg ci -m changea
$ hg up -C 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg cp a aa
$ echo c >> a
$ hg qnew --git -f -e patcha
$ echo d >> a
$ hg qnew -d '0 0' -f -e patcha2
Create the reference queue:
$ hg qsave -c -e -n refqueue
copy $TESTTMP/t2/.hg/patches to $TESTTMP/t2/.hg/refqueue (glob)
$ hg up -C 1
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
Merge:
$ HGMERGE=internal:other hg qpush -a -m -n refqueue
merging with queue at: $TESTTMP/t2/.hg/refqueue (glob)
applying patcha
patching file a
Hunk #1 succeeded at 2 with fuzz 1 (offset 0 lines).
fuzz found when applying patch, stopping
patch didn't work out, merging patcha
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
applying patcha2
now at: patcha2
Check patcha is still a git patch:
$ cat .hg/patches/patcha
# HG changeset patch
# Parent d3873e73d99ef67873dac33fbcc66268d5d2b6f4
diff --git a/a b/a
--- a/a
+++ b/a
@@ -1,1 +1,2 @@
-b
+a
+c
diff --git a/a b/aa
copy from a
copy to aa
--- a/a
+++ b/aa
@@ -1,1 +1,1 @@
-b
+a
Check patcha2 is still a regular patch:
$ cat .hg/patches/patcha2
# HG changeset patch
# Date 0 0
# Parent ???????????????????????????????????????? (glob)
diff -r ???????????? -r ???????????? a (glob)
--- a/a
+++ b/a
@@ -1,2 +1,3 @@
a
c
+d
$ cd ..