Document git-clone --use-separate-remote

[git.git] / git-sh-setup.sh

diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index e343349..d15747f 100755 (executable)
--- 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