# Copyright (c) 2005 Junio C Hamano
#
-. git-sh-setup || die "Not a git archive"
+
+USAGE='[-n] [--no-commit] [-s <strategy>]... <merge-message> <head> <remote>+'
+. git-sh-setup
LF='
'
-usage () {
- die "git-merge [-n] [--no-commit] [-s <strategy>]... <merge-message> <head> <remote>+"
-}
-
-# all_strategies='resolve recursive stupid octopus'
-
all_strategies='recursive octopus resolve stupid ours'
-default_strategies='resolve octopus'
+default_strategies='recursive'
use_strategies=
dropsave() {
shift
done
-case "$use_strategies" in
-'')
- use_strategies=$default_strategies
- ;;
-esac
test "$#" -le 2 && usage ;# we need at least two heads.
merge_msg="$1"
shift
# All the rest are remote heads
+remoteheads=
for remote
do
- git-rev-parse --verify "$remote"^0 >/dev/null ||
+ remotehead=$(git-rev-parse --verify "$remote"^0) ||
die "$remote - not something we can merge"
+ remoteheads="${remoteheads}$remotehead "
done
+set x $remoteheads ; shift
-common=$(git-show-branch --merge-base $head "$@")
+case "$#" in
+1)
+ common=$(git-merge-base --all $head "$@")
+ ;;
+*)
+ common=$(git-show-branch --merge-base $head "$@")
+ ;;
+esac
echo "$head" >"$GIT_DIR/ORIG_HEAD"
case "$#,$common,$no_commit" in
up_to_date=t
for remote
do
- common_one=$(git-merge-base $head $remote)
+ common_one=$(git-merge-base --all $head $remote)
if test "$common_one" != "$remote"
then
up_to_date=f
;;
esac
+case "$use_strategies" in
+'')
+ case "$#" in
+ 1)
+ use_strategies="$default_strategies" ;;
+ *)
+ use_strategies=octopus ;;
+ esac
+ ;;
+esac
+
# At this point, we need a real merge. No matter what strategy
# we use, it would operate on the index, possibly affecting the
# working tree, and when resolved cleanly, have the desired tree
esac
result_tree= best_cnt=-1 best_strategy= wt_strategy=
+merge_was_ok=
for strategy in $use_strategies
do
test "$wt_strategy" = '' || {
exit=$?
if test "$no_commit" = t && test "$exit" = 0
then
+ merge_was_ok=t
exit=1 ;# pretend it left conflicts.
fi
case "$best_strategy" in
'')
restorestate
- die "No merge strategy handled the merge."
+ echo >&2 "No merge strategy handled the merge."
+ exit 2
;;
"$wt_strategy")
# We already have its result in the working tree.
done >"$GIT_DIR/MERGE_HEAD"
echo $merge_msg >"$GIT_DIR/MERGE_MSG"
-die "Automatic merge failed/prevented; fix up by hand"
+if test "$merge_was_ok" = t
+then
+ echo >&2 \
+ "Automatic merge went well; stopped before committing as requested"
+ exit 0
+else
+ {
+ echo '
+Conflicts:
+'
+ git ls-files --unmerged |
+ sed -e 's/^[^ ]* / /' |
+ uniq
+ } >>"$GIT_DIR/MERGE_MSG"
+ die "Automatic merge failed; fix up by hand"
+fi