X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=git-filter-branch.sh;h=ffcc408ee5217d7a8f6179a0404ffe387e0dab0f;hb=549799b4a1741fe765fff2c91808b4524ea2d7fb;hp=a4b6577bd496819232754c1275b7c1e798b0470c;hpb=4e837a98b65fbe0c83376cae5167605b771421d8;p=git.git

diff --git a/git-filter-branch.sh b/git-filter-branch.sh
index a4b6577bd..ffcc408ee 100755
--- a/git-filter-branch.sh
+++ b/git-filter-branch.sh
@@ -94,6 +94,10 @@ USAGE="[--env-filter <command>] [--tree-filter <command>] \
 
 . git-sh-setup
 
+git diff-files --quiet &&
+	git diff-index --cached --quiet HEAD ||
+	die "Cannot rewrite branch(es) with a dirty working directory."
+
 tempdir=.git-rewrite
 filter_env=
 filter_tree=
@@ -105,8 +109,9 @@ filter_tag_name=
 filter_subdir=
 orig_namespace=refs/original/
 force=
-while case "$#" in 0) usage;; esac
+while :
 do
+	test $# = 0 && usage
 	case "$1" in
 	--)
 		shift
@@ -195,6 +200,9 @@ do
 	esac
 done < "$tempdir"/backup-refs
 
+ORIG_GIT_DIR="$GIT_DIR"
+ORIG_GIT_WORK_TREE="$GIT_WORK_TREE"
+ORIG_GIT_INDEX_FILE="$GIT_INDEX_FILE"
 export GIT_DIR GIT_WORK_TREE=.
 
 # These refs should be updated if their heads were rewritten
@@ -412,4 +420,12 @@ echo
 test $count -gt 0 && echo "These refs were rewritten:"
 git show-ref | grep ^"$orig_namespace"
 
+unset GIT_DIR GIT_WORK_TREE GIT_INDEX_FILE
+test -z "$ORIG_GIT_DIR" || GIT_DIR="$ORIG_GIT_DIR" && export GIT_DIR
+test -z "$ORIG_GIT_WORK_TREE" || GIT_WORK_TREE="$ORIG_GIT_WORK_TREE" &&
+	export GIT_WORK_TREE
+test -z "$ORIG_GIT_INDEX_FILE" || GIT_INDEX_FILE="$ORIG_GIT_INDEX_FILE" &&
+	export GIT_INDEX_FILE
+git read-tree -u -m HEAD
+
 exit $ret