git-commit-vandalism/git-commit-script
Johannes Schindelin eca35ecdca [PATCH] git-commit-script fix for degenerated merge
If merging results in an unchanged tree, git-commit-script should not
complain that there's nothing to commit.

Also, add "[--all]" to usage().

[jc: usually there is no reason to record an unchanging merge,
but this code path is triggered only when there is a nontrivial
merge that needed to be resolved by hand, and we should be able
to record the fact that these two tree heads are dealt with as a
regular two-parent commit in order to help later merges.]

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-08-05 23:06:58 -07:00

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#!/bin/sh
#
# Copyright (c) 2005 Linus Torvalds
#
. git-sh-setup-script || die "Not a git archive"
usage () {
die 'git commit [--all] [-m existing-commit] [<path>...]'
}
files=()
while case "$#" in 0) break ;; esac
do
case "$1" in
-m) shift
case "$#" in
0) usage ;;
*) use_commit=`git-rev-parse --verify "$1"` ||
exit ;;
esac
;;
--all)
files=($(git-diff-files --name-only))\
;;
*) break
;;
esac
shift
done
git-update-cache -q --refresh -- "$@" "${files[@]}" || exit 1
PARENTS="-p HEAD"
if [ ! -r "$GIT_DIR/HEAD" ]; then
if [ -z "$(git-ls-files)" ]; then
echo Nothing to commit 1>&2
exit 1
fi
(
echo "#"
echo "# Initial commit"
echo "#"
git-ls-files | sed 's/^/# New file: /'
echo "#"
) > .editmsg
PARENTS=""
else
if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
echo "#"
echo "# It looks like your may be committing a MERGE."
echo "# If this is not correct, please remove the file"
echo "# $GIT_DIR/MERGE_HEAD"
echo "# and try again"
echo "#"
PARENTS="-p HEAD -p MERGE_HEAD"
elif test "$use_commit" != ""
then
pick_author_script='
/^author /{
h
s/^author \([^<]*\) <[^>]*> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_NAME='\''&'\''/p
g
s/^author [^<]* <\([^>]*\)> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
g
s/^author [^<]* <[^>]*> \(.*\)$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_DATE='\''&'\''/p
q
}
'
set_author_env=`git-cat-file commit "$use_commit" |
sed -ne "$pick_author_script"`
eval "$set_author_env"
export GIT_AUTHOR_NAME
export GIT_AUTHOR_EMAIL
export GIT_AUTHOR_DATE
git-cat-file commit "$use_commit" |
sed -e '1,/^$/d'
fi >.editmsg
git-status-script >>.editmsg
fi
if [ "$?" != "0" -a ! -f $GIT_DIR/MERGE_HEAD ]
then
cat .editmsg
rm .editmsg
exit 1
fi
case "$use_commit" in
'')
${VISUAL:-${EDITOR:-vi}} .editmsg
;;
esac
grep -v '^#' < .editmsg | git-stripspace > .cmitmsg
[ -s .cmitmsg ] &&
tree=$(git-write-tree) &&
commit=$(cat .cmitmsg | git-commit-tree $tree $PARENTS) &&
echo $commit > "$GIT_DIR/HEAD" &&
rm -f -- "$GIT_DIR/MERGE_HEAD"
ret="$?"
rm -f .cmitmsg .editmsg
exit "$ret"