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 repo1
cd repo1
mkdir a b a/1 b/1 b/2
touch in_root a/in_a b/in_b a/1/in_a_1 b/1/in_b_1 b/2/in_b_2
echo "hg status in repo root:"
hg status
echo "hg status . in repo root:"
hg status .
for dir in a b a/1 b/1 b/2; do
echo "hg status in $dir:"
hg status --cwd "$dir"
echo "hg status . in $dir:"
hg status --cwd "$dir" .
echo "hg status .. in $dir:"
hg status --cwd "$dir" ..
done
cd ..
hg init repo2
cd repo2
touch modified removed deleted ignored
echo "ignored" > .hgignore
hg ci -A -m 'initial checkin' -d "1000000 0"
sleep 1 # make sure mtime is changed
touch modified added unknown ignored
hg add added
hg remove removed
rm deleted
echo "hg status:"
hg status
echo "hg status modified added removed deleted unknown never-existed ignored:"
hg status modified added removed deleted unknown never-existed ignored
hg copy modified copied
echo "hg status -C:"
hg status -C
echo "hg status -A:"
hg status -A