merge: fix a copy detection bug (issue672)
When merging rev1 and rev2, we want to search for copies that happened
in rev1 but not in rev2 and vice-versa. We were starting the search at
rev1/rev2 and then going back, stopping as soon as we reached the revno
of the ancestor, but that can miss some cases (see the new
test-issue672).
Now we calculate the revisions that are ancestors of rev1 or rev2 (but
not both) and make sure the search doesn't stop too early.
Simplified test provided by mpm, based on a test case provided by
Edward Lee.
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
pulling from ../test-a
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files (+1 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
warning: conflicts during merge.
merging test.txt
merging test.txt failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
There are unresolved merges, you can redo the full merge using:
hg update -C 1
hg merge 2
pulling from ../test-a
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files (+1 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
warning: conflicts during merge.
resolving manifests
overwrite None partial False
ancestor faaea63e63a9 local 451c744aabcc+ remote a070d41e8360
test.txt: versions differ -> m
merging test.txt
my test.txt@451c744aabcc+ other test.txt@a070d41e8360 ancestor test.txt@faaea63e63a9
merging test.txt failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
There are unresolved merges, you can redo the full merge using:
hg update -C 3
hg merge 4
one
<<<<<<< my
two-point-five
=======
two-point-one
>>>>>>> other
three
rev offset length base linkrev nodeid p1 p2
0 0 7 0 0 01365c4cca56 000000000000 000000000000
1 7 9 1 1 7b013192566a 01365c4cca56 000000000000
2 16 15 2 2 8fe46a3eb557 01365c4cca56 000000000000
3 31 27 2 3 fc3148072371 7b013192566a 8fe46a3eb557
4 58 25 4 4 d40249267ae3 8fe46a3eb557 000000000000
changeset: 4:a070d41e8360
tag: tip
parent: 2:faaea63e63a9
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: two -> two-point-one
changeset: 3:451c744aabcc
parent: 1:e409be6afcc0
parent: 2:faaea63e63a9
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: Merge 1
changeset: 2:faaea63e63a9
parent: 0:095c92b91f1a
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: Numbers as words
changeset: 1:e409be6afcc0
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: 2 -> 2.5
changeset: 0:095c92b91f1a
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: Initial