ls-tree: resurrect '-d' to mean 'show trees only'

diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index 55db795843514571450acf7da600b6aba10c15d4..b4f10224baf8328a9d6efa761b025450df414bb2 100755 (executable)
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -1,10 +1,9 @@
 #!/bin/sh
 #
-# Set up GIT_DIR and GIT_OBJECT_DIRECTORY
-# and return true if everything looks ok
-#
-: ${GIT_DIR=.git}
-: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
+# This is included in commands that either have to be run from the toplevel
+# of the repository, or with GIT_DIR environment variable properly.
+# If the GIT_DIR does not look like the right correct git-repository,
+# it dies.
 
 # Having this variable in your environment would break scripts because
 # you would cause "cd" to be be taken to unexpected places.  If you
@@ -12,11 +11,13 @@
 # exporting it.
 unset CDPATH
 
+: ${GIT_DIR=.git}
+: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
+
 die() {
-       echo "$@" >&2
+       echo >&2 "$@"
        exit 1
 }
 
-[ -h "$GIT_DIR/HEAD" ] &&
-[ -d "$GIT_DIR/refs" ] &&
-[ -d "$GIT_OBJECT_DIRECTORY/00" ]
+# Make sure we are in a valid repository of a vintage we understand.
+GIT_DIR="$GIT_DIR" git-var GIT_AUTHOR_IDENT >/dev/null || exit