X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=git-resolve-script;h=7c0e3d8aa8f7e63d1e98b79612844043a8481011;hb=9a9cbb6e9f2a5ceca16cae2a959a7162abc36c54;hp=50d5f8336feec0eb9839a2641cb9faf9ab67391d;hpb=165e160e4c4fb5b03146d5c41c2f6b078260b098;p=git.git

diff --git a/git-resolve-script b/git-resolve-script
index 50d5f833..7c0e3d8a 100755
--- a/git-resolve-script
+++ b/git-resolve-script
@@ -49,7 +49,41 @@ if [ "$common" == "$head" ]; then
 	dropheads
 	exit 0
 fi
-echo "Trying to merge $merge into $head"
+
+# Find an optimum merge base if there are more than one candidates.
+LF='
+'
+common=$(git-merge-base -a $head $merge)
+case "$common" in
+?*"$LF"?*)
+	echo "Trying to find the optimum merge base."
+	G=.tmp-index$$
+	best=
+	best_cnt=-1
+	for c in $common
+	do
+		rm -f $G
+		GIT_INDEX_FILE=$G git-read-tree -m $c $head $merge \
+			2>/dev/null || continue
+		# Count the paths that are unmerged.
+		cnt=`GIT_INDEX_FILE=$G git-ls-files --unmerged | wc -l`
+		if test $best_cnt -le 0 -o $cnt -le $best_cnt
+		then
+			best=$c
+			best_cnt=$cnt
+			if test "$best_cnt" -eq 0
+			then
+				# Cannot do any better than all trivial merge.
+				break
+			fi
+		fi
+	done
+	rm -f $G
+	common="$best"
+esac
+
+echo "Trying to merge $merge into $head using $common."
+git-update-cache --refresh 2>/dev/null
 git-read-tree -u -m $common $head $merge || exit 1
 result_tree=$(git-write-tree  2> /dev/null)
 if [ $? -ne 0 ]; then