Add support for negatable flags (--[no-]color)

[DannyBen]

The main motivation behind this feature, is the recently added argfile support, which means that users can define something like --color in their argfile, and then they have no way to disable it.

This can now be mitigated easily with:

flags:
- long: --color
  short: -c
  help: Enable color output
  negatable: true

---

• Implementation
• Specs
• Bashly bash completions
• Bashly CLI docs (bashly doc flag.negatable)
• JSON schema
• bashly.dev docs - Source | Preview

[meleu]

You'll receive a notification because of this message and I really hope you don't take it as a waste of your time.

Instead, I want you to receive my appreciation of your work on this feature! That's going to decrease the amount of code we need to handle just to add the --no- version of some options.

Thanks dude! ❤️

[DannyBen]

@meleu, are you kidding buddy? I thought we were friends... :)

a) I am always happy to hear that someone else finds things I do useful, even more so from long time users and contributors.
b) If you wanted this feature, you could have asked

Personally, I didn't see a point to this feature before we added the argfile support - now users can state --color in the argfile, and then there is no way to turn it off, so --[no-]color now has a stronger reasoning for existing.

I am curious what is your use case for needing it.