X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=tg.sh;h=838dc49185be1fa81b288830ca950725d469ae10;hb=120b1ea119b87b3ea292f0c2e2416540e790fcd1;hp=ffc120a9bedc18b0bde6501f4264c58fd1c92465;hpb=8cf11543aebd8cf79555a1668f718e8950e3e4a8;p=topgit.git

diff --git a/tg.sh b/tg.sh
index ffc120a..838dc49 100644
--- a/tg.sh
+++ b/tg.sh
@@ -388,6 +388,29 @@ do_help()
 	fi
 }
 
+# Check whether we are supposed to output the help message
+should_do_help()
+{
+	# we are being sourced for utility functions, never run help
+	[ -z "$tg__include" ] || return 1
+
+	local prev
+	while [ -n "$1" ]; do
+		case "$1" in
+		help|--help|-h)
+			shift
+			echo "${1:-$prev}"
+			return 0
+		esac
+		prev="$1"
+		shift
+	done
+
+	# run help when there was no previous topic, meaning that there where
+	# no arguments at all
+	test -z "$prev"
+}
+
 ## Pager stuff
 
 # isatty FD
@@ -441,6 +464,9 @@ get_temp()
 [ -d "@cmddir@" ] ||
 	die "No command directory: '@cmddir@'"
 
+# check if we should run help and get the topic while we're at it
+help_topic="$(should_do_help "$@")" && { do_help "$help_topic"; exit 0; }
+
 ensure_git_repo_or_die
 
 ## Initial setup
@@ -482,9 +508,6 @@ cmd="$1"
 shift
 
 case "$cmd" in
-help|--help|-h)
-	do_help "$1"
-	exit 0;;
 --hooks-path)
 	# Internal command
 	echo "@hooksdir@";;