X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=git-sh-setup.sh;h=aa16b8356507e4e669ee5c4cb4b5a667942d559e;hb=eb9cb55b944796374402ab4e2639300dc9b0b409;hp=ae031a1375e9c674d80b9fa3d3d3b76780deaf9f;hpb=b3ff808b714fd8fc5e4d2770720398e5dc7d27f9;p=git.git

diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index ae031a137..aa16b8356 100644
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -145,6 +145,35 @@ require_work_tree () {
 	die "fatal: $0 cannot be used without a working tree."
 }
 
+require_clean_work_tree () {
+	git rev-parse --verify HEAD >/dev/null || exit 1
+	git update-index -q --ignore-submodules --refresh
+	err=0
+
+	if ! git diff-files --quiet --ignore-submodules
+	then
+		echo >&2 "Cannot $1: You have unstaged changes."
+		err=1
+	fi
+
+	if ! git diff-index --cached --quiet --ignore-submodules HEAD --
+	then
+		if [ $err = 0 ]
+		then
+		    echo >&2 "Cannot $1: Your index contains uncommitted changes."
+		else
+		    echo >&2 "Additionally, your index contains uncommitted changes."
+		fi
+		err=1
+	fi
+
+	if [ $err = 1 ]
+	then
+		test -n "$2" && echo >&2 "$2"
+		exit 1
+	fi
+}
+
 get_author_ident_from_commit () {
 	pick_author_script='
 	/^author /{