Customizations

package main

import (
	"fmt"
	"log"
	"os"
	"context"

	"github.com/urfave/cli/v3"
)

func main() {
	tasks := []string{"cook", "clean", "laundry", "eat", "sleep", "code"}

	cmd := &cli.Command{
		EnableShellCompletion: true,
		Commands: []*cli.Command{
			{
				Name:    "complete",
				Aliases: []string{"c"},
				Usage:   "complete a task on the list",
				Action: func(ctx context.Context, cmd *cli.Command) error {
					fmt.Println("completed task: ", cmd.Args().First())
					return nil
				},
				ShellComplete: func(ctx context.Context, cmd *cli.Command) {
					// This will complete if no args are passed
					if cmd.NArg() > 0 {
						return
					}
					for _, t := range tasks {
						fmt.Println(t)
					}
				},
			},
		},
	}

	if err := cmd.Run(context.Background(), os.Args); err != nil {
		log.Fatal(err)
	}
}

package main

import (
	"context"
	"fmt"
	"log"
	"os"

	"github.com/urfave/cli/v3"
)

func main() {
	cmd := &cli.Command{
		Name: "greet",
		// EnableShellCompletion is unnecessary
		ConfigureShellCompletionCommand: func(cmd *cli.Command) { // cmd is a completion command
			cmd.Hidden = false // Make a completion command public
			cmd.Usage = "..." // Customize Usage
			cmd.Description = "..." // Customize Description
		},
		Commands: []*cli.Command{
			{
				Name:  "hello",
				Usage: "Say hello",
				Action: func(ctx context.Context, cmd *cli.Command) error {
					fmt.Println("Hello")
					return nil
				},
			},
		},
	}

	if err := cmd.Run(context.Background(), os.Args); err != nil {
		log.Fatal(err)
	}
}

package main

import (
	"log"
	"os"
	"context"

	"github.com/urfave/cli/v3"
)

func main() {
	cmd := &cli.Command{
		EnableShellCompletion: true,
		Commands: []*cli.Command{
			{
				Name: "wat",
			},
		},
	}

	if err := cmd.Run(context.Background(), os.Args); err != nil {
		log.Fatal(err)
	}
}