You'll need to create a FlagSet instead and pass ContinueOnError as
the error handling. If .Parse() returns an error call
.PrintDefaults(), then print the error.
On Sun, Dec 8, 2019 at 4:00 AM Thomas Nyberg <tomnyb...@gmail.com> wrote:
>
> Hello,
>
> Given the following file `flag_example.go`:
>
> package main
>
> import "flag"
>
> func main() {
> flagName := flag.String("flagName", "flagValue", "Help message.")
> flag.Parse()
> _ = flagName
> }
>
> If I execute it with a bad flag passed I see the following:
>
> $ ./flag_example -flagName
> flag needs an argument: -flagName
> Usage of ./flag_example:
> -flagName string
> Help message. (default "flagValue")
>
> What I would like to see is something like the following:
>
> $ ./flag_example -flagName
> Usage of ./flag_example:
> -flagName string
> Help message. (default "flagValue")
>
> flag needs an argument: -flagName
>
> In other words, I would like to move the error to the end. Is there an easy
> way to achieve this? I know about changing Usage, but that doesn't seem to
> affect this specific issue. Thanks for any help!
>
> Cheers,
> Thomas
>
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