Print subcommand lookup errors.

commands/commands.go

@@ -31,6 +31,7 @@ type Command struct {
 func (c *Command) Call(args *Args) (err error) {
 	runCommand, err := lookupCommand(c, args)
 	if err != nil {
+		fmt.Println(err)
 		return
 	}
 
@@ -90,7 +91,6 @@ func (c *Command) subCommandsUsage() string {
 			key = printUsageBuffer(s, buffer, key)
 		}
 	}
-	buffer.WriteString("\n")
 
 	return buffer.String()
 }

commands/commands_test.go

@@ -90,7 +90,6 @@ func TestCommandUsageSubCommands(t *testing.T) {
 
 	expected := `usage: git foo
    or: git foo bar
-
 `
 	assert.Equal(t, expected, usage)
 }
@@ -105,7 +104,6 @@ func TestCommandUsageSubCommandsPrintOnlyRunnables(t *testing.T) {
 	usage := c.subCommandsUsage()
 
 	expected := `usage: git foo bar
-
 `
 	assert.Equal(t, expected, usage)
 }