X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=git-sh-setup.sh;h=d15747f1ed8f875a3c1bb7129e50bfbc8d2b033f;hb=cf7424b021f99fbc5dc1127725e57ca3d48e981c;hp=e343349c0087aefbb42d17ace9102a72d2fb437a;hpb=ae2b0f15180d4b044828c836bcab6a990efa5c8e;p=git.git

diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index e343349c..d15747f1 100755
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -11,18 +11,41 @@
 # exporting it.
 unset CDPATH
 
-: ${GIT_DIR=.git}
-: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
-
 die() {
 	echo >&2 "$@"
 	exit 1
 }
 
-case "$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD 2>/dev/null)" in
-refs/*)	: ;;
-*)	false ;;
-esac &&
-[ -d "$GIT_DIR/refs" ] &&
-[ -d "$GIT_OBJECT_DIRECTORY/" ] ||
-	die "Not a git repository."
+usage() {
+	die "Usage: $0 $USAGE"
+}
+
+if [ -z "$LONG_USAGE" ]
+then
+	LONG_USAGE="Usage: $0 $USAGE"
+else
+	LONG_USAGE="Usage: $0 $USAGE
+
+$LONG_USAGE"
+fi
+
+case "$1" in
+	-h|--h|--he|--hel|--help)
+	echo "$LONG_USAGE"
+	exit
+esac
+
+if [ -z "$SUBDIRECTORY_OK" ]
+then
+	: ${GIT_DIR=.git}
+	: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
+
+	# Make sure we are in a valid repository of a vintage we understand.
+	GIT_DIR="$GIT_DIR" git repo-config --get core.nosuch >/dev/null
+	if test $? = 128
+	then
+	    exit
+	fi
+else
+	GIT_DIR=$(git-rev-parse --git-dir) || exit
+fi