X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=git-merge.sh;h=fa4589173f426d6172883c47479c52b8700cafa8;hb=1346c9996350e96c7b38a57ede5d503821d84fe3;hp=7dd0a112368a8b3672a98fdfcdb5290146cefeba;hpb=e8b4029f990907e24fac0e7772ee19ee6dd55c1c;p=git.git

diff --git a/git-merge.sh b/git-merge.sh
index 7dd0a1123..fa4589173 100755
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -3,9 +3,15 @@
 # Copyright (c) 2005 Junio C Hamano
 #
 
-USAGE='[-n] [--no-commit] [--squash] [-s <strategy>] [--reflog-action=<action>] [-m=<merge-message>] <commit>+'
+USAGE='[-n] [--no-commit] [--squash] [-s <strategy>] [-m=<merge-message>] <commit>+'
 
+SUBDIRECTORY_OK=Yes
 . git-sh-setup
+require_work_tree
+cd_to_toplevel
+
+test -z "$(git ls-files -u)" ||
+	die "You are in the middle of a conflicted merge."
 
 LF='
 '
@@ -57,10 +63,10 @@ squash_message () {
 finish () {
 	if test '' = "$2"
 	then
-		rlogm="$rloga"
+		rlogm="$GIT_REFLOG_ACTION"
 	else
 		echo "$2"
-		rlogm="$rloga: $2"
+		rlogm="$GIT_REFLOG_ACTION: $2"
 	fi
 	case "$squash" in
 	t)
@@ -102,6 +108,10 @@ merge_name () {
 		git-show-ref -q --verify "refs/heads/$truname" 2>/dev/null
 	then
 		echo "$rh		branch '$truname' (early part) of ."
+	elif test "$remote" = "FETCH_HEAD" -a -r "$GIT_DIR/FETCH_HEAD"
+	then
+		sed -e 's/	not-for-merge	/		/' -e 1q \
+			"$GIT_DIR/FETCH_HEAD"
 	else
 		echo "$rh		commit '$remote'"
 	fi
@@ -109,7 +119,7 @@ merge_name () {
 
 case "$#" in 0) usage ;; esac
 
-rloga= have_message=
+have_message=
 while case "$#" in 0) break ;; esac
 do
 	case "$1" in
@@ -139,9 +149,6 @@ do
 			die "available strategies are: $all_strategies" ;;
 		esac
 		;;
-	--reflog-action=*)
-		rloga=`expr "z$1" : 'z-[^=]*=\(.*\)'`
-		;;
 	-m=*|--m=*|--me=*|--mes=*|--mess=*|--messa=*|--messag=*|--message=*)
 		merge_msg=`expr "z$1" : 'z-[^=]*=\(.*\)'`
 		have_message=t
@@ -213,7 +220,7 @@ head=$(git-rev-parse --verify "$head_arg"^0) || usage
 
 # All the rest are remote heads
 test "$#" = 0 && usage ;# we need at least one remote head.
-test "$rloga" = '' && rloga="merge: $@"
+set_reflog_action "merge $*"
 
 remoteheads=
 for remote
@@ -230,21 +237,36 @@ case "$use_strategies" in
 '')
 	case "$#" in
 	1)
-		use_strategies="$default_twohead_strategies" ;;
+		var="`git-config --get pull.twohead`"
+		if test -n "$var"
+		then
+			use_strategies="$var"
+		else
+			use_strategies="$default_twohead_strategies"
+		fi ;;
 	*)
-		use_strategies="$default_octopus_strategies" ;;
+		var="`git-config --get pull.octopus`"
+		if test -n "$var"
+		then
+			use_strategies="$var"
+		else
+			use_strategies="$default_octopus_strategies"
+		fi ;;
 	esac
 	;;
 esac
 
 for s in $use_strategies
 do
-	case " $s " in
-	*" $no_trivial_merge_strategies "*)
-		index_merge=f
-		break
-		;;
-	esac
+	for nt in $no_trivial_merge_strategies
+	do
+		case " $s " in
+		*" $nt "*)
+			index_merge=f
+			break
+			;;
+		esac
+	done
 done
 
 case "$#" in
@@ -274,9 +296,14 @@ f,*)
 	# Again the most common case of merging one remote.
 	echo "Updating $(git-rev-parse --short $head)..$(git-rev-parse --short $1)"
 	git-update-index --refresh 2>/dev/null
+	msg="Fast forward"
+	if test -n "$have_message"
+	then
+		msg="$msg (no commit created; -m option ignored)"
+	fi
 	new_head=$(git-rev-parse --verify "$1^0") &&
 	git-read-tree -v -m -u --exclude-per-directory=.gitignore $head "$new_head" &&
-	finish "$new_head" "Fast forward"
+	finish "$new_head" "$msg" || exit
 	dropsave
 	exit 0
 	;;
@@ -286,24 +313,30 @@ f,*)
 	;;
 ?,1,*,)
 	# We are not doing octopus, not fast forward, and have only
-	# one common.  See if it is really trivial.
-	git var GIT_COMMITTER_IDENT >/dev/null || exit
-
-	echo "Trying really trivial in-index merge..."
+	# one common.
 	git-update-index --refresh 2>/dev/null
-	if git-read-tree --trivial -m -u -v $common $head "$1" &&
-	   result_tree=$(git-write-tree)
-	then
-	    echo "Wonderful."
-	    result_commit=$(
-	        echo "$merge_msg" |
-	        git-commit-tree $result_tree -p HEAD -p "$1"
-	    ) || exit
-	    finish "$result_commit" "In-index merge"
-	    dropsave
-	    exit 0
-	fi
-	echo "Nope."
+	case " $use_strategies " in
+	*' recursive '*|*' recur '*)
+		: run merge later
+		;;
+	*)
+		# See if it is really trivial.
+		git var GIT_COMMITTER_IDENT >/dev/null || exit
+		echo "Trying really trivial in-index merge..."
+		if git-read-tree --trivial -m -u -v $common $head "$1" &&
+		   result_tree=$(git-write-tree)
+		then
+			echo "Wonderful."
+			result_commit=$(
+				echo "$merge_msg" |
+				git-commit-tree $result_tree -p HEAD -p "$1"
+			) || exit
+			finish "$result_commit" "In-index merge"
+			dropsave
+			exit 0
+		fi
+		echo "Nope."
+	esac
 	;;
 *)
 	# An octopus.  If we can reach all the remote we are up to date.