copies: filter out copies when target is not in destination manifest
When chaining a series of commits that copied a file with a series
that removed the destination file, we would still include the copy in
the result. Similar to the previous patch, I have checked that `hg
status --copies` is not affected by this bug, but I wouldn't be
surprised if some commands are.
Differential Revision: https://phab.mercurial-scm.org/D5989
$ cat >> $HGRCPATH << EOF
> [alias]
> l = log -G -T '{rev} {desc}\n{files}\n'
> EOF
$ REPONUM=0
$ newrepo() {
> cd $TESTTMP
> REPONUM=`expr $REPONUM + 1`
> hg init repo-$REPONUM
> cd repo-$REPONUM
> }
Simple rename case
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg mv x y
$ hg ci -m 'rename x to y'
$ hg l
@ 1 rename x to y
| x y
o 0 add x
x
$ hg debugpathcopies 0 1
x -> y
$ hg debugpathcopies 1 0
y -> x
Test filtering copies by path. We do filtering by destination.
$ hg debugpathcopies 0 1 x
$ hg debugpathcopies 1 0 x
y -> x
$ hg debugpathcopies 0 1 y
x -> y
$ hg debugpathcopies 1 0 y
Copy a file onto another file
$ newrepo
$ echo x > x
$ echo y > y
$ hg ci -Aqm 'add x and y'
$ hg cp -f x y
$ hg ci -m 'copy x onto y'
$ hg l
@ 1 copy x onto y
| y
o 0 add x and y
x y
Incorrectly doesn't show the rename
$ hg debugpathcopies 0 1
Copy a file onto another file with same content. If metadata is stored in changeset, this does not
produce a new filelog entry. The changeset's "files" entry should still list the file.
$ newrepo
$ echo x > x
$ echo x > x2
$ hg ci -Aqm 'add x and x2 with same content'
$ hg cp -f x x2
$ hg ci -m 'copy x onto x2'
$ hg l
@ 1 copy x onto x2
| x2
o 0 add x and x2 with same content
x x2
Incorrectly doesn't show the rename
$ hg debugpathcopies 0 1
Copy a file, then delete destination, then copy again. This does not create a new filelog entry.
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg cp x y
$ hg ci -m 'copy x to y'
$ hg rm y
$ hg ci -m 'remove y'
$ hg cp -f x y
$ hg ci -m 'copy x onto y (again)'
$ hg l
@ 3 copy x onto y (again)
| y
o 2 remove y
| y
o 1 copy x to y
| y
o 0 add x
x
$ hg debugpathcopies 0 3
x -> y
Rename file in a loop: x->y->z->x
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg mv x y
$ hg ci -m 'rename x to y'
$ hg mv y z
$ hg ci -m 'rename y to z'
$ hg mv z x
$ hg ci -m 'rename z to x'
$ hg l
@ 3 rename z to x
| x z
o 2 rename y to z
| y z
o 1 rename x to y
| x y
o 0 add x
x
$ hg debugpathcopies 0 3
Copy x to y, then remove y, then add back y. With copy metadata in the changeset, this could easily
end up reporting y as copied from x (if we don't unmark it as a copy when it's removed).
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg mv x y
$ hg ci -m 'rename x to y'
$ hg rm y
$ hg ci -qm 'remove y'
$ echo x > y
$ hg ci -Aqm 'add back y'
$ hg l
@ 3 add back y
| y
o 2 remove y
| y
o 1 rename x to y
| x y
o 0 add x
x
$ hg debugpathcopies 0 3
Copy x to z, then remove z, then copy x2 (same content as x) to z. With copy metadata in the
changeset, the two copies here will have the same filelog entry, so ctx['z'].introrev() might point
to the first commit that added the file. We should still report the copy as being from x2.
$ newrepo
$ echo x > x
$ echo x > x2
$ hg ci -Aqm 'add x and x2 with same content'
$ hg cp x z
$ hg ci -qm 'copy x to z'
$ hg rm z
$ hg ci -m 'remove z'
$ hg cp x2 z
$ hg ci -m 'copy x2 to z'
$ hg l
@ 3 copy x2 to z
| z
o 2 remove z
| z
o 1 copy x to z
| z
o 0 add x and x2 with same content
x x2
$ hg debugpathcopies 0 3
x2 -> z
Create x and y, then rename them both to the same name, but on different sides of a fork
$ newrepo
$ echo x > x
$ echo y > y
$ hg ci -Aqm 'add x and y'
$ hg mv x z
$ hg ci -qm 'rename x to z'
$ hg co -q 0
$ hg mv y z
$ hg ci -qm 'rename y to z'
$ hg l
@ 2 rename y to z
| y z
| o 1 rename x to z
|/ x z
o 0 add x and y
x y
$ hg debugpathcopies 1 2
z -> x
y -> z
Fork renames x to y on one side and removes x on the other
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg mv x y
$ hg ci -m 'rename x to y'
$ hg co -q 0
$ hg rm x
$ hg ci -m 'remove x'
created new head
$ hg l
@ 2 remove x
| x
| o 1 rename x to y
|/ x y
o 0 add x
x
$ hg debugpathcopies 1 2
Copies via null revision (there shouldn't be any)
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg cp x y
$ hg ci -m 'copy x to y'
$ hg co -q null
$ echo x > x
$ hg ci -Aqm 'add x (again)'
$ hg l
@ 2 add x (again)
x
o 1 copy x to y
| y
o 0 add x
x
$ hg debugpathcopies 1 2
$ hg debugpathcopies 2 1
Merge rename from other branch
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg mv x y
$ hg ci -m 'rename x to y'
$ hg co -q 0
$ echo z > z
$ hg ci -Aqm 'add z'
$ hg merge -q 1
$ hg ci -m 'merge rename from p2'
$ hg l
@ 3 merge rename from p2
|\ x
| o 2 add z
| | z
o | 1 rename x to y
|/ x y
o 0 add x
x
Perhaps we should indicate the rename here, but `hg status` is documented to be weird during
merges, so...
$ hg debugpathcopies 0 3
x -> y
$ hg debugpathcopies 1 2
y -> x
$ hg debugpathcopies 1 3
$ hg debugpathcopies 2 3
x -> y
Copy file from either side in a merge
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg co -q null
$ echo y > y
$ hg ci -Aqm 'add y'
$ hg merge -q 0
$ hg cp y z
$ hg ci -m 'copy file from p1 in merge'
$ hg co -q 1
$ hg merge -q 0
$ hg cp x z
$ hg ci -qm 'copy file from p2 in merge'
$ hg l
@ 3 copy file from p2 in merge
|\ z
+---o 2 copy file from p1 in merge
| |/ z
| o 1 add y
| y
o 0 add x
x
$ hg debugpathcopies 1 2
y -> z
$ hg debugpathcopies 0 2
$ hg debugpathcopies 1 3
$ hg debugpathcopies 0 3
x -> z
Copy file that exists on both sides of the merge, same content on both sides
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x on branch 1'
$ hg co -q null
$ echo x > x
$ hg ci -Aqm 'add x on branch 2'
$ hg merge -q 0
$ hg cp x z
$ hg ci -qm 'merge'
$ hg l
@ 2 merge
|\ z
| o 1 add x on branch 2
| x
o 0 add x on branch 1
x
It's a little weird that it shows up on both sides
$ hg debugpathcopies 1 2
x -> z
$ hg debugpathcopies 0 2
x -> z
Copy file that exists on both sides of the merge, different content
$ newrepo
$ echo branch1 > x
$ hg ci -Aqm 'add x on branch 1'
$ hg co -q null
$ echo branch2 > x
$ hg ci -Aqm 'add x on branch 2'
$ hg merge -q 0
warning: conflicts while merging x! (edit, then use 'hg resolve --mark')
[1]
$ echo resolved > x
$ hg resolve -m x
(no more unresolved files)
$ hg cp x z
$ hg ci -qm 'merge'
$ hg l
@ 2 merge
|\ x z
| o 1 add x on branch 2
| x
o 0 add x on branch 1
x
$ hg debugpathcopies 1 2
$ hg debugpathcopies 0 2
x -> z
Copy x->y on one side of merge and copy x->z on the other side. Pathcopies from one parent
of the merge to the merge should include the copy from the other side.
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg cp x y
$ hg ci -qm 'copy x to y'
$ hg co -q 0
$ hg cp x z
$ hg ci -qm 'copy x to z'
$ hg merge -q 1
$ hg ci -m 'merge copy x->y and copy x->z'
$ hg l
@ 3 merge copy x->y and copy x->z
|\
| o 2 copy x to z
| | z
o | 1 copy x to y
|/ y
o 0 add x
x
$ hg debugpathcopies 2 3
x -> y
$ hg debugpathcopies 1 3
x -> z
Copy x to y on one side of merge, create y and rename to z on the other side. Pathcopies from the
first side should not include the y->z rename since y didn't exist in the merge base.
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg cp x y
$ hg ci -qm 'copy x to y'
$ hg co -q 0
$ echo y > y
$ hg ci -Aqm 'add y'
$ hg mv y z
$ hg ci -m 'rename y to z'
$ hg merge -q 1
$ hg ci -m 'merge'
$ hg l
@ 4 merge
|\
| o 3 rename y to z
| | y z
| o 2 add y
| | y
o | 1 copy x to y
|/ y
o 0 add x
x
$ hg debugpathcopies 2 3
y -> z
$ hg debugpathcopies 1 3
Create x and y, then rename x to z on one side of merge, and rename y to z and modify z on the
other side.
$ newrepo
$ echo x > x
$ echo y > y
$ hg ci -Aqm 'add x and y'
$ hg mv x z
$ hg ci -qm 'rename x to z'
$ hg co -q 0
$ hg mv y z
$ hg ci -qm 'rename y to z'
$ echo z >> z
$ hg ci -m 'modify z'
$ hg merge -q 1
warning: conflicts while merging z! (edit, then use 'hg resolve --mark')
[1]
$ echo z > z
$ hg resolve -qm z
$ hg ci -m 'merge 1 into 3'
Try merging the other direction too
$ hg co -q 1
$ hg merge -q 3
warning: conflicts while merging z! (edit, then use 'hg resolve --mark')
[1]
$ echo z > z
$ hg resolve -qm z
$ hg ci -m 'merge 3 into 1'
created new head
$ hg l
@ 5 merge 3 into 1
|\ y z
+---o 4 merge 1 into 3
| |/ x z
| o 3 modify z
| | z
| o 2 rename y to z
| | y z
o | 1 rename x to z
|/ x z
o 0 add x and y
x y
$ hg debugpathcopies 1 4
$ hg debugpathcopies 2 4
$ hg debugpathcopies 0 4
x -> z
$ hg debugpathcopies 1 5
$ hg debugpathcopies 2 5
$ hg debugpathcopies 0 5
x -> z