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02a4a32c2d
You can resolve a tag, and it does the right thing except that it might end up writing the tag itself into the resulting HEAD, which will confuse subsequent operations no end. This makes sure that when we resolve two heads, we will have turned them into proper commits before we start acting on them. This also fixes the parsing of "treeish^0", which would incorrectly resolve to "treeish" instead of causing an error. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
65 lines
1.6 KiB
Bash
Executable File
65 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2005 Linus Torvalds
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#
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# Resolve two trees.
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#
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. git-sh-setup-script || die "Not a git archive"
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head=$(git-rev-parse --verify "$1"^0) || exit
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merge=$(git-rev-parse --verify "$2"^0) || exit
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merge_msg="$3"
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dropheads() {
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rm -f -- "$GIT_DIR/MERGE_HEAD" \
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"$GIT_DIR/LAST_MERGE" || exit 1
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}
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#
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# The remote name is just used for the message,
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# but we do want it.
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#
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if [ -z "$head" -o -z "$merge" -o -z "$merge_msg" ]; then
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die "git-resolve-script <head> <remote> <merge-message>"
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fi
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dropheads
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echo $head > "$GIT_DIR"/ORIG_HEAD
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echo $merge > "$GIT_DIR"/LAST_MERGE
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common=$(git-merge-base $head $merge)
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if [ -z "$common" ]; then
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die "Unable to find common commit between" $merge $head
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fi
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if [ "$common" == "$merge" ]; then
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echo "Already up-to-date. Yeeah!"
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dropheads
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exit 0
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fi
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if [ "$common" == "$head" ]; then
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echo "Updating from $head to $merge."
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git-read-tree -u -m $head $merge || exit 1
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echo $merge > "$GIT_DIR"/HEAD
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git-diff-tree -p $head $merge | git-apply --stat
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dropheads
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exit 0
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fi
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echo "Trying to merge $merge into $head"
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git-read-tree -u -m $common $head $merge || exit 1
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result_tree=$(git-write-tree 2> /dev/null)
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if [ $? -ne 0 ]; then
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echo "Simple merge failed, trying Automatic merge"
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git-merge-cache -o git-merge-one-file-script -a
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if [ $? -ne 0 ]; then
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echo $merge > "$GIT_DIR"/MERGE_HEAD
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die "Automatic merge failed, fix up by hand"
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fi
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result_tree=$(git-write-tree) || exit 1
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fi
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result_commit=$(echo "$merge_msg" | git-commit-tree $result_tree -p $head -p $merge)
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echo "Committed merge $result_commit"
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echo $result_commit > "$GIT_DIR"/HEAD
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git-diff-tree -p $head $result_commit | git-apply --stat
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dropheads
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