merge: do early copy to deal with issue636
Without copies/renames, merges source names are 1:1 with their
targets. Copies and renames introduce the possibility that there will
be two merges with the same input but different output. By doing the
copy to the destination name before the merge, the actual merge
becomes 1:1 again, and no source is the input to two different merges.
- add a preliminary scan to applyupdates to do copies
- for the merge action, pass the old name (for finding ancestors) and
the new name (for input to the merge) to filemerge
- eliminate the old post-merge copy
- lookup file contents from new name in filemerge
- pass new name to external merge helper
- report merge failure at new name
- add a test
adding init
adding x
adding y
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
adding x
adding y
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
requesting all changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 3 changes to 3 files
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
requesting all changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 3 changes to 3 files
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
comparing with b
searching for changes
changeset: 4:fdb3c546e859
tag: tip
parent: 1:1f703b3fcbc6
parent: 2:de997049e034
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: m2
comparing with c
searching for changes
changeset: 3:f40f830c0024
parent: 2:de997049e034
parent: 1:1f703b3fcbc6
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: m1
comparing with c
searching for changes
changeset: 3:f40f830c0024
tag: tip
parent: 2:de997049e034
parent: 1:1f703b3fcbc6
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: m1
comparing with b
searching for changes
changeset: 3:fdb3c546e859
tag: tip
parent: 1:1f703b3fcbc6
parent: 2:de997049e034
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: m2
pulling from a
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files (+1 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
pulling from a
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files (+1 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)