[ruby-core:107578] [Ruby master Feature#18585] Promote find pattern to official feature

Issue #18585 has been updated by retro (Josef Šimánek).


Hello! Is this request related to the whole feature (as described at https://docs.ruby-lang.org/en/3.1/doc/syntax/pattern_matching_rdoc.html) or only to one pattern called "Find pattern" (as described at https://docs.ruby-lang.org/en/3.1/doc/syntax/pattern_matching_rdoc.html#label-Patterns)?

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Feature #18585: Promote find pattern to official feature
https://bugs.ruby-lang.org/issues/18585#change-96489

* Author: ktsj (Kazuki Tsujimoto)
* Status: Assigned
* Priority: Normal
* Assignee: ktsj (Kazuki Tsujimoto)
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"Find pattern" has introduced in 3.0 and it is still marked as an experimental.
I don't see any problems, so it is time to promote it to official feature.

(BTW, it was useful when writing code like the following for a practical example.)

```ruby
if ary in [*, {a: 0, b: 1 | 2} => i, *]
  ...
end
```



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