apply: remove directory that becomes empty by renaming the last file away

diff --git a/git-merge.sh b/git-merge.sh
index 4afcd95316c01e5d1811184c615c4da574ab0717..b2f8a2acd398b7c61b68a59c6d3631ca84be0727 100755 (executable)
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -16,10 +16,10 @@ test -z "$(git ls-files -u)" ||
 LF='
 '
 
-all_strategies='recur recursive octopus resolve stupid ours'
+all_strategies='recur recursive octopus resolve stupid ours subtree'
 default_twohead_strategies='recursive'
 default_octopus_strategies='octopus'
-no_trivial_merge_strategies='ours'
+no_trivial_merge_strategies='ours subtree'
 use_strategies=
 
 index_merge=t
@@ -108,6 +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
@@ -292,9 +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 "$new_head" "Fast forward" || exit
+       finish "$new_head" "$msg" || exit
        dropsave
        exit 0
        ;;
@@ -319,7 +328,7 @@ f,*)
                then
                        echo "Wonderful."
                        result_commit=$(
-                               echo "$merge_msg" |
+                               printf '%s\n' "$merge_msg" |
                                git-commit-tree $result_tree -p HEAD -p "$1"
                        ) || exit
                        finish "$result_commit" "In-index merge"
@@ -424,7 +433,7 @@ done
 if test '' != "$result_tree"
 then
     parents=$(git-show-branch --independent "$head" "$@" | sed -e 's/^/-p /')
-    result_commit=$(echo "$merge_msg" | git-commit-tree $result_tree $parents) || exit
+    result_commit=$(printf '%s\n' "$merge_msg" | git-commit-tree $result_tree $parents) || exit
     finish "$result_commit" "Merge made by $wt_strategy."
     dropsave
     exit 0
@@ -463,7 +472,7 @@ else
        do
                echo $remote
        done >"$GIT_DIR/MERGE_HEAD"
-       echo "$merge_msg" >"$GIT_DIR/MERGE_MSG"
+       printf '%s\n' "$merge_msg" >"$GIT_DIR/MERGE_MSG"
 fi
 
 if test "$merge_was_ok" = t