How to define mutually exlusive flags

[fangxlmr]

Say, I've got flag -x/--enable-x, and -X/--disable-x which disable the effect of previous -x/--enable-x option. Surely, it's easy to enable either one of them in the logic silently. But it'd be interesting to see any mutually exlusive definition which will directly exit when encounter both -x and -X flags, and warn user about this.

I couldn't find any docs related in cobra and pflag.

[cupcakearmy]

Also interested in this.

[github-actions]

This issue is being marked as stale due to a long period of inactivity

[cupcakearmy]

But still relevant dear bot ❤️

[johnSchnake]

I think in this case there are two issues:

• how to get that basic functionality of -x vs -X. Thats pretty simple to do since you can just create two flags with the same backing boolean value.
• how can you get warnings or errors if both are set? This is more manual to accomplish and would require visiting the flags. I've had situations similar to this where I provide warnings if certain flags are provided together. I do think that there is something that could be done to improve that experience.