fix(cli): panic on no args

cmd/tk/env.go

@@ -51,7 +51,7 @@ func envSetCmd() *cli.Command {
 	cmd := &cli.Command{
 		Use:   "set",
 		Short: "update properties of an environment",
-		Args:  cli.ArgsExact(1),
+		Args:  workflowArgs,
 		Predictors: complete.Flags{
 			"server-from-context": kubectlContexts,
 		},
@@ -175,6 +175,7 @@ func envRemoveCmd() *cli.Command {
 		Use:     "remove <path>",
 		Aliases: []string{"rm"},
 		Short:   "delete an environment",
+		Args:    workflowArgs,
 		Run: func(cmd *cli.Command, args []string) error {
 			for _, arg := range args {
 				path, err := filepath.Abs(arg)

pkg/cli/args.go

@@ -94,9 +94,9 @@ func ArgsAny() Arguments {
 	}
 }
 
-// PredictAny predicts anything (usually files and directories)
+// PredictAny predicts any files/directories
 func PredictAny() complete.Predictor {
-	return complete.PredictAnything
+	return complete.PredictFiles("*")
 }
 
 // ValidateAny always approves

pkg/cli/command.go

@@ -106,6 +106,9 @@ func (c *Command) Execute() error {
 	}
 
 	// validate args
+	if c.Args == nil {
+		c.Args = ArgsAny()
+	}
 	if err := c.Args.Validate(c.Flags().Args()); err != nil {
 		return c.help(err)
 	}