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
#!/bin/sh
hg init
echo 123 > a
echo 123 > c
echo 123 > e
hg add a c e
hg commit -m "first" -d "1000000 0" a c e
echo 123 > b
echo %% should show b unknown
hg status
echo 12 > c
echo %% should show b unknown and c modified
hg status
hg add b
echo %% should show b added and c modified
hg status
hg rm a
echo %% should show a removed, b added and c modified
hg status
hg revert a
echo %% should show b added, copy saved, and c modified
hg status
hg revert b
echo %% should show b unknown, and c modified
hg status
hg revert --no-backup c
echo %% should show unknown: b
hg status
echo %% should show a b c e
ls
echo %% should verbosely save backup to e.orig
echo z > e
hg revert --all -v
echo %% should say no changes needed
hg revert a
echo %% should say file not managed
echo q > q
hg revert q
rm q
echo %% should say file not found
hg revert notfound
hg rm a
hg commit -m "second" -d "1000000 0"
echo z > z
hg add z
hg st
echo %% should add a, forget z
hg revert --all -r0
echo %% should forget a
hg revert --all -rtip
rm a *.orig
echo %% should silently add a
hg revert -r0 a
hg st a
hg update -C
chmod +x c
hg revert --all
echo %% should print non-executable
test -x c || echo non-executable
chmod +x c
hg commit -d '1000001 0' -m exe
chmod -x c
hg revert --all
echo %% should print executable
test -x c && echo executable
echo %% issue 241
hg init a
cd a
echo a >> a
hg commit -A -d '1 0' -m a
echo a >> a
hg commit -d '2 0' -m a
hg update 0
mkdir b
echo b > b/b
echo % should fail - no arguments
hg revert -rtip
echo % should succeed
hg revert --all -rtip
echo %% issue332
hg ci -A -m b -d '1000001 0'
echo foobar > b/b
mkdir newdir
echo foo > newdir/newfile
hg add newdir/newfile
hg revert b newdir
echo foobar > b/b
hg revert .
true