[v3] Long flag usage text uses short flag syntax

[zx8]

This is a very minor annoyance, but worth fixing I think. Short flag syntax is -e and long flag syntax is --example.

The help text for missing flags should use the long flag syntax, as this is pretty standard across all CLI tools that support short flags as well as long flags.

---

Info:

• Using v3.0.0-alpha7

Code

package main

import (
  "context"
  "log"
  "os"

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

func main() {
  cmd := &cli.Command{
    Name: "example",
  }

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

Expected

$ go run . --bar
flag provided but not defined: --bar

Actual

$ go run . --bar
flag provided but not defined: -bar

[dearchap]

@zx8 Yes this is a very old issue/request. This is the error that the golang flag library returns. Until we move away from that library its unlikely we will fix it.

[zx8]

Ahh right, ok, so nothing to do with v3 – closing!