merging code

help.go

@@ -81,6 +81,24 @@ func ShowVersion(c *Context) {
 	fmt.Printf("%v version %v\n", c.App.Name, c.App.Version)
 }
 
+// Prints the lists of commands within a given context
+func ShowCompletions(c *Context) {
+	for _, command := range c.App.Commands {
+		fmt.Println(command.Name)
+		if command.ShortName != "" {
+			fmt.Println(command.ShortName)
+		}
+	}
+}
+
+// Prints the custom completions for a given command
+func ShowCommandCompletions(ctx *Context, command string) {
+	c := ctx.App.Command(command)
+	if c != nil && c.BashComplete != nil {
+		c.BashComplete(ctx)
+	}
+}
+
 func printHelp(templ string, data interface{}) {
 	w := tabwriter.NewWriter(os.Stdout, 0, 8, 1, '\t', 0)
 	t := template.Must(template.New("help").Parse(templ))
@@ -117,3 +135,21 @@ func checkCommandHelp(c *Context, name string) bool {
 
 	return false
 }
+
+func checkCompletions(c *Context) bool {
+	if c.GlobalBool("generate-bash-completion") {
+		ShowCompletions(c)
+		return true
+	}
+
+	return false
+}
+
+func checkCommandCompletions(c *Context, name string) bool {
+	if c.Bool("generate-bash-completion") {
+		ShowCommandCompletions(c, name)
+		return true
+	}
+
+	return false
+}