git-merge: show usage if run without arguments

diff --git a/git-repack.sh b/git-repack.sh
index 640ad8d90b9a9afd00506a9697af1d3e560e1255..f2c9071d1109e014832f0efd8a1fd67dca44c8af 100755 (executable)
--- a/git-repack.sh
+++ b/git-repack.sh
@@ -4,6 +4,7 @@
 #
 
 USAGE='[-a] [-d] [-f] [-l] [-n] [-q]'
+SUBDIRECTORY_OK='Yes'
 . git-sh-setup
 
 no_update_info= all_into_one= remove_redundant=
@@ -24,27 +25,27 @@ do
        shift
 done
 
-rm -f .tmp-pack-*
 PACKDIR="$GIT_OBJECT_DIRECTORY/pack"
+PACKTMP="$GIT_DIR/.tmp-$$-pack"
+rm -f "$PACKTMP"-*
+trap 'rm -f "$PACKTMP"-*' 0 1 2 3 15
 
 # There will be more repacking strategies to come...
 case ",$all_into_one," in
 ,,)
-       rev_list='--unpacked'
-       pack_objects='--incremental'
+       args='--unpacked --incremental'
        ;;
 ,t,)
-       rev_list=
-       pack_objects=
+       args=
 
        # Redundancy check in all-into-one case is trivial.
-       existing=`cd "$PACKDIR" && \
+       existing=`test -d "$PACKDIR" && cd "$PACKDIR" && \
            find . -type f \( -name '*.pack' -o -name '*.idx' \) -print`
        ;;
 esac
-pack_objects="$pack_objects $local $quiet $no_reuse_delta$extra"
-name=$(git-rev-list --objects --all $rev_list 2>&1 |
-       git-pack-objects --non-empty $pack_objects .tmp-pack) ||
+
+args="$args $local $quiet $no_reuse_delta$extra"
+name=$(git-pack-objects --non-empty --all $args </dev/null "$PACKTMP") ||
        exit 1
 if [ -z "$name" ]; then
        echo Nothing new to pack.
@@ -62,8 +63,8 @@ else
                                "$PACKDIR/old-pack-$name.$sfx"
                fi
        done &&
-       mv -f .tmp-pack-$name.pack "$PACKDIR/pack-$name.pack" &&
-       mv -f .tmp-pack-$name.idx  "$PACKDIR/pack-$name.idx" &&
+       mv -f "$PACKTMP-$name.pack" "$PACKDIR/pack-$name.pack" &&
+       mv -f "$PACKTMP-$name.idx"  "$PACKDIR/pack-$name.idx" &&
        test -f "$PACKDIR/pack-$name.pack" &&
        test -f "$PACKDIR/pack-$name.idx" || {
                echo >&2 "Couldn't replace the existing pack with updated one."