How to define different signatures for each supported ruby versions?

[kachick]

https://github.com/ruby/rbs/blob/11d99dbe7de1cd9da6487ad0a153424b6452ee15/docs/CONTRIBUTING.md#the-target-version

The section describes as below

The Target Version
The standard library signatures targets Ruby 2.7 for now.
The library code targets Ruby 2.6, 2.7, and 3.0.

How about to add/modify signatures for core/ in each ruby versions?
e.g.) Ruby 3.0 added Hash#except, but it looks nothing in core/hash.rbs. Does rbs have any version guard feature?

[soutaro]

The doc is wrong... The target right now is 3.0.

We don't have a plan to introduce something like version guard yet.

[kachick]

I see! So I close this issue. And I might try some PRs around the doc and hash.rbs :)