Ensure all flag aliases are set when Destination given

and extend "Incorrect Usage" message to show the error. Closes #430
2016-05-23 22:00:59 -04:00
parent 685865d2d9
commit 8f25dbb615
4 changed files with 92 additions and 9 deletions
--- a/command.go
+++ b/command.go
@@ -97,7 +97,7 @@ func (c Command) Run(ctx *Context) (err error) {
 			HandleExitCoder(err)
 			return err
 		}
-		fmt.Fprintln(ctx.App.Writer, "Incorrect Usage.")
+		fmt.Fprintln(ctx.App.Writer, "Incorrect Usage: %s\n\n", err)
 		fmt.Fprintln(ctx.App.Writer)
 		ShowCommandHelp(ctx, c.Name)
 		return err