view tests/test-filebranch @ 990:5007e0bdeed2

Fix long-standing excessive file merges Since switching to the multihead approach, we've been creating excessive file-level merges where files are marked as merged with their ancestors. This explicitly checks at commit time whether the two parent versions are linearly related, and if so, reduces the file check-in to a non-merge. Then the file is compared against the remaining parent, and, if equal, skips check-in of that file (as it's not changed). Since we're not checking in all files that were different between versions, we no longer need to mark so many files for merge. This removes most of the 'm' state marking as well. Finally, it is possible to do a tree-level merge with no file-level changes. This will happen if one user changes file A and another changes file B. Thus, if we have have two parents, we allow commit to proceed even if there are no file-level changes.
author mpm@selenic.com
date Sun, 21 Aug 2005 21:59:55 -0700
parents
children 6f274afc05c7
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#!/bin/sh

# This test makes sure that we don't mark a file as merged with its ancestor
# when we do a merge.

cat <<'EOF' > merge
#!/bin/sh
echo merging for `basename $1`
EOF
chmod +x merge

echo creating base
hg init a
cd a
echo 1 > foo
echo 1 > bar
echo 1 > baz
echo 1 > quux
hg add foo bar baz quux
hg commit -m "base" -d "0 0"

cd ..
hg clone a b

echo creating branch a
cd a
echo 2a > foo
echo 2a > bar
hg commit -m "branch a" -d "0 0"

echo creating branch b

cd ..
cd b
echo 2b > foo
echo 2b > baz
hg commit -m "branch b" -d "0 0"

echo "we shouldn't have anything but n state here"
hg debugstate | cut -b 1-16,35-

echo merging
hg pull ../a
env HGMERGE=../merge hg update -vm --debug

echo 2m > foo
echo 2b > baz
echo new > quux

echo "we shouldn't have anything but foo in merge state here"
hg debugstate | cut -b 1-16,35- | grep "^m"

hg ci -m "merge" -d "0 0"

echo "main: we should have a merge here"
hg debugindex .hg/00changelog.i

echo "foo: we should have a merge here"
hg debugindex .hg/data/foo.i

echo "bar: we shouldn't have a merge here"
hg debugindex .hg/data/bar.i

echo "baz: we shouldn't have a merge here"
hg debugindex .hg/data/baz.i

echo "quux: we shouldn't have a merge here"
hg debugindex .hg/data/quux.i

echo "everything should be clean now"
hg status

hg verify