From 197e1d9c80fc875e0a393ecf5cf4abf7ead8ddd0 Mon Sep 17 00:00:00 2001
From: Valentin Lab <valentin.lab@kalysto.org>
Date: Mon, 17 Dec 2018 11:29:01 +0100
Subject: [PATCH] fix: provide a sensible help when using ``run`` command
 without any services.

---
 bin/compose-core | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bin/compose-core b/bin/compose-core
index 1c85c14..0e4030f 100755
--- a/bin/compose-core
+++ b/bin/compose-core
@@ -3800,7 +3800,7 @@ if [ "$full_init" ]; then
 
 fi
 
-if [ "$action" == "run" ]; then
+if [ "$action" == "run" -a "${#services_args}" != 0 ]; then
     charm=$(get_service_charm "${services_args[0]}") || exit 1
     metadata=$(charm.metadata "$charm") || exit 1
     type="$(printf "%s" "$metadata" | shyaml get-value type 2>/dev/null)" || true