Non global short flags

[1buran]

Hi!

Is there a way to make short flags local to subcommands?

For example i would like to make such flags:

type TrackMode struct {
	Project string  `arg:"-p,--project" help:"project ID"`
	Issue   string  `arg:"-i,--issue" help:"issue ID"`
	Comment string  `arg:"-c,--comment" help:"comment"`
	Hours   float32 `arg:"-h,--hours" help:"hours"`
}

type CalendarMode struct {
	Month int `arg:"-m,--month" help:"choose month (default: current month)"`
	Year  int `arg:"-y,--year" help:"choose year (default: current year)"`
}

type Args struct {
	Calendar *CalendarMode `arg:"subcommand:cal" help:"calendar"`
	Track    *TrackMode    `arg:"subcommand:track" help:"track time"`

	Debug              bool   `arg:"-d,--debug" help:"enable debug"`
	Config             string `arg:"-c,--" placeholder:"CONFIG" help:"config path (default: ~/.config/workdiary/config.json)"`
	PrintConfigExample bool   `arg:"-p,--print-conf-example" help:"print example of config and exit"`
}

as you see, it is convenient to have short flags like -p, -i, -c and -h for subcommand track
but they conflict with the global ones:

.... ...... 
	Config             string `arg:"-c,--" placeholder:"CONFIG" help:"config path (default: ~/.config/workdiary/config.json)"`
	PrintConfigExample bool   `arg:"-p,--print-conf-example" help:"print example of config and exit"`
 

$ cmd track -p 1234 prints the default config,
$ cmd track -h 1 conflict with the default global help: -h,--help,
$ cmd track -c comment parsed as custom config path, what obviously is not what is wanted...

[alexflint]

Hmm yes I see your point. I don't think there's any way to accomplish that with the library as it stands right now. It would be relatively simple to implement the change wtihin the library, though it would technically be a breaking change... Perhaps some kind of ordering flag could be added to arg.Config.