[PATCH] git-merge: do up-to-date check also for strategies ours, subtree.

If called with one argument, check also for no_trivial_merge_strategies
whether all the merge can already be reached by HEAD.  Otherwise git-merge
creates an unnecessary commit, e.g.:

 $ (git init && touch foo && git add foo && git commit -m foo) >/dev/null
 $ git merge -s ours master
 Merge made by ours.
 $ git log --pretty=oneline
 d941346f022b7cb70c51d8122de4ae82657ae943 Merge branch 'master'
 68a1d32229917d5d1f4c8f64096d1abde84e9f6b foo
 $

Signed-off-by: Gerrit Pape <redacted>
---
 git-merge.sh |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/git-merge.sh b/git-merge.sh
index 5ccf282..e90f62a 100755
--- a/git-merge.sh
+++ b/git-merge.sh

@@ -287,9 +287,6 @@ esac
 echo "$head" >"$GIT_DIR/ORIG_HEAD"
 
 case "$index_merge,$#,$common,$no_commit" in
-f,*)
-	# We've been told not to try anything clever.  Skip to real merge.
-	;;
 ?,*,'',*)
 	# No common ancestors found. We need a real merge.
 	;;

@@ -299,6 +296,9 @@ f,*)
 	finish_up_to_date "Already up-to-date."
 	exit 0
 	;;
+f,*)
+	# We've been told not to try anything clever.  Skip to real merge.
+	;;
 ?,1,"$head",*)
 	# Again the most common case of merging one remote.
 	echo "Updating $(git rev-parse --short $head)..$(git rev-parse --short $1)"

-- 
debian.1.5.3_rc4.1-dirty