Merge branch 'maint'

* maint:
  Clarified the meaning of git-add -u in the documentation
  git-clone.sh: properly configure remote even if remote's head is dangling
  Documentation/git-stash: document options for git stash list
  send-email: squelch warning due to comparing undefined $_ to ""

Documentation/git-add.txt

@@ -74,8 +74,8 @@ OPTIONS
 	Update only files that git already knows about. This is similar
 	to what "git commit -a" does in preparation for making a commit,
 	except that the update is limited to paths specified on the
-	command line. If no paths are specified, all tracked files are
-	updated.
+	command line. If no paths are specified, all tracked files in the
+	current directory and its subdirectories are updated.
 
 \--refresh::
 	Don't add the file(s), but only refresh their stat()

Documentation/git-stash.txt

@@ -43,7 +43,7 @@ save [<message>]::
 	subcommand is given. The <message> part is optional and gives
 	the description along with the stashed state.
 
-list::
+list [<options>]::
 
 	List the stashes that you currently have.  Each 'stash' is listed
 	with its name (e.g. `stash@\{0}` is the latest stash, `stash@\{1}` is
@@ -55,6 +55,9 @@ list::
 stash@{0}: WIP on submit: 6ebd0e2... Update git-stash documentation
 stash@{1}: On master: 9cc0589... Add git-stash
 ----------------------------------------------------------------
++
+The command takes options applicable to the linkgit:git-log[1]
+command to control what is shown and how.
 
 show [<stash>]::
 

git-clone.sh

@@ -409,11 +409,12 @@ else
 	cd "$D" || exit
 fi
 
-if test -z "$bare" && test -f "$GIT_DIR/REMOTE_HEAD"
+if test -z "$bare"
 then
 	# a non-bare repository is always in separate-remote layout
 	remote_top="refs/remotes/$origin"
-	head_sha1=`cat "$GIT_DIR/REMOTE_HEAD"`
+	head_sha1=
+	test ! -r "$GIT_DIR/REMOTE_HEAD" || head_sha1=`cat "$GIT_DIR/REMOTE_HEAD"`
 	case "$head_sha1" in
 	'ref: refs/'*)
 		# Uh-oh, the remote told us (http transport done against
@@ -470,9 +471,16 @@ then
 		git config branch."$head_points_at".merge "refs/heads/$head_points_at"
 		;;
 	'')
-		# Source had detached HEAD pointing nowhere
-		git update-ref --no-deref HEAD "$head_sha1" &&
-		rm -f "refs/remotes/$origin/HEAD"
+		if test -z "$head_sha1"
+		then
+			# Source had nonexistent ref in HEAD
+			echo >&2 "Warning: Remote HEAD refers to nonexistent ref, unable to checkout."
+			no_checkout=t
+		else
+			# Source had detached HEAD pointing nowhere
+			git update-ref --no-deref HEAD "$head_sha1" &&
+			rm -f "refs/remotes/$origin/HEAD"
+		fi
 		;;
 	esac
 

git-send-email.perl

@@ -475,7 +475,7 @@ sub expand_aliases {
 
 	$initial_reply_to = $_;
 }
-if (defined $initial_reply_to && $_ ne "") {
+if (defined $initial_reply_to) {
 	$initial_reply_to =~ s/^\s*<?/</;
 	$initial_reply_to =~ s/>?\s*$/>/;
 }

t/t5701-clone-local.sh

@@ -63,4 +63,12 @@ test_expect_success 'Even without -l, local will make a hardlink' '
 	test 0 = $copied
 '
 
+test_expect_success 'local clone of repo with nonexistent ref in HEAD' '
+	cd "$D" &&
+	echo "ref: refs/heads/nonexistent" > a.git/HEAD &&
+	git clone a d &&
+	cd d &&
+	git fetch &&
+	test ! -e .git/refs/remotes/origin/HEAD'
+
 test_done