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https://github.com/git/git
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165e160e4c
Recent change to make sure we get commit, not tag, accidentally removed its feature of giving a usage help message when it died. Signed-off-by: Junio C Hamano <junkio@cox.net>
69 lines
1.7 KiB
Bash
Executable file
69 lines
1.7 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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usage () {
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die "git-resolve-script <head> <remote> <merge-message>"
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}
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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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head=$(git-rev-parse --verify "$1"^0) &&
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merge=$(git-rev-parse --verify "$2"^0) &&
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merge_msg="$3" || usage
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#
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# The remote name is just used for the message,
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# but we do want it.
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#
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if [ -z "$head" -o -z "$merge" -o -z "$merge_msg" ]; then
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usage
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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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