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Leave merge failures in the filesystem 

This changes how we handle merges: if a automated merge
fails, we will leave the index as a clean entry pointing
to the original branch, and leave the actual file _dirty_
the way the "merge" program left it.

You can then just do "git-diff-files -p" to see what the
merge conflicts did, fix them up, and commit the end result.

NOTE NOTE NOTE! Do _not_ use "git commit" to commit such
a merge. It won't set the parents right. I'll need to fix
that. In the meantime, you'd need to merge using

	git-commit-tree $(git-write) -p HEAD -p MERGE_HEAD

or something like that by hand.
This commit is contained in:
Linus Torvalds 2005-06-08 11:40:59 -07:00
parent f9e7750621
commit 2a68a8659f
1 changed files with 19 additions and 12 deletions
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31
git-merge-one-file-script
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@ -19,22 +19,25 @@ case "${1:-.}${2:-.}${3:-.}" in
# Deleted in both.
#
"$1..")
echo "ERROR: $4 is removed in both branches."
echo "ERROR: This is a potential rename conflict."
exit 1;;
echo "WARNING: $4 is removed in both branches."
echo "WARNING: This is a potential rename conflict."
exec git-update-cache --remove -- "$4" ;;
#
# Deleted in one and unchanged in the other.
#
"$1.." | "$1.$1" | "$1$1.")
echo "Removing $4"
exec git-update-cache --force-remove "$4" ;;
rm -f -- "$4"
exec git-update-cache --remove -- "$4" ;;
#
# Added in one.
#
".$2." | "..$3" )
case "$6$7" in *7??) mode=+x;; *) mode=-x;; esac
echo "Adding $4 with perm $mode."
exec git-update-cache --add --cacheinfo "$6$7" "$2$3" "$4" ;;
git-cat-file blob "$2$3" > "$4"
chmod $mode -- "$4"
exec git-update-cache --add -- "$4" ;;
#
# Added in both (check for same permissions).
#
@ -46,7 +49,9 @@ case "${1:-.}${2:-.}${3:-.}" in
fi
case "$6" in *7??) mode=+x;; *) mode=-x;; esac
echo "Adding $4 with perm $mode"
exec git-update-cache --add --cacheinfo "$6" "$2" "$4" ;;
git-cat-file blob "$2" > "$4"
chmod $mode -- "$4"
exec git-update-cache --add -- "$4" ;;
#
# Modified in both, but differently.
#
@ -55,19 +60,21 @@ case "${1:-.}${2:-.}${3:-.}" in
orig=`git-unpack-file $1`
src1=`git-unpack-file $2`
src2=`git-unpack-file $3`
merge "$src2" "$orig" "$src1"
merge -p "$src1" "$orig" "$src2" > "$4"
ret=$?
rm -f -- "$orig" "$src1" "$src2"
if [ "$6" != "$7" ]; then
echo "ERROR: Permissions $5->$6->$7 don't match."
ret=1
fi
if [ $ret -ne 0 ]; then
echo "ERROR: Leaving conflict merge in $src2."
# Reset the index to the first branch, making
# git-diff-file useful
git-update-cache --add --cacheinfo "$6" "$2" "$4"
echo "ERROR: Merge conflict in $4."
exit 1
fi
sha1=`git-write-blob "$src2"` || {
echo "ERROR: Leaving conflict merge in $src2."
}
exec git-update-cache --add --cacheinfo "$6" $sha1 "$4" ;;
exec git-update-cache --add -- "$4" ;;
*)
echo "ERROR: Not handling case $4: $1 -> $2 -> $3" ;;
esac