Allow to sort commands by category

command.go

@@ -22,6 +22,8 @@ type Command struct {
 	Description string
 	// A short description of the arguments of this command
 	ArgsUsage string
+	// The category the command is part of
+	Category string
 	// The function to call when checking for bash command completions
 	BashComplete func(context *Context)
 	// An action to execute before any sub-subcommands are run, but after the context is ready
@@ -37,7 +39,7 @@ type Command struct {
 	// If this function is not set, the "Incorrect usage" is displayed and the execution is interrupted.
 	OnUsageError func(context *Context, err error) error
 	// List of child commands
-	Subcommands []Command
+	Subcommands Commands
 	// List of flags to parse
 	Flags []Flag
 	// Treat all flags as normal arguments if true
@@ -59,6 +61,8 @@ func (c Command) FullName() string {
 	return strings.Join(c.commandNamePath, " ")
 }
 
+type Commands []Command
+
 // Invokes the command given the context, parses ctx.Args() to generate command-specific flags
 func (c Command) Run(ctx *Context) (err error) {
 	if len(c.Subcommands) > 0 {