From 4a7a5f3a57a967c0dd0658658c96c21b8c172d29 Mon Sep 17 00:00:00 2001
From: Vincent Demeester <vincent@sbr.pm>
Date: Sat, 4 Jun 2016 16:19:54 +0200
Subject: [PATCH] Display "See 'docker cmd --help'." in error cases

This brings back this message in case missing arguments.

Signed-off-by: Vincent Demeester <vincent@sbr.pm>
---
 required.go | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/required.go b/required.go
index b3ebb9ba9f..1bbd55f524 100644
--- a/required.go
+++ b/required.go
@@ -18,7 +18,8 @@ func NoArgs(cmd *cobra.Command, args []string) error {
 	}
 
 	return fmt.Errorf(
-		"\"%s\" accepts no argument(s).\n\nUsage:  %s\n\n%s",
+		"\"%s\" accepts no argument(s).\nSee '%s --help'.\n\nUsage:  %s\n\n%s",
+		cmd.CommandPath(),
 		cmd.CommandPath(),
 		cmd.UseLine(),
 		cmd.Short,
@@ -32,9 +33,10 @@ func RequiresMinArgs(min int) cobra.PositionalArgs {
 			return nil
 		}
 		return fmt.Errorf(
-			"\"%s\" requires at least %d argument(s).\n\nUsage:  %s\n\n%s",
+			"\"%s\" requires at least %d argument(s).\nSee '%s --help'.\n\nUsage:  %s\n\n%s",
 			cmd.CommandPath(),
 			min,
+			cmd.CommandPath(),
 			cmd.UseLine(),
 			cmd.Short,
 		)
@@ -48,9 +50,10 @@ func ExactArgs(number int) cobra.PositionalArgs {
 			return nil
 		}
 		return fmt.Errorf(
-			"\"%s\" requires exactly %d argument(s).\n\nUsage:  %s\n\n%s",
+			"\"%s\" requires exactly %d argument(s).\nSee '%s --help'.\n\nUsage:  %s\n\n%s",
 			cmd.CommandPath(),
 			number,
+			cmd.CommandPath(),
 			cmd.UseLine(),
 			cmd.Short,
 		)