From: "zenspider (Ryan Davis) via ruby-core" <ruby-core@...>
Date: 2026-04-17T21:56:08+00:00
Subject: [ruby-core:125317] [Ruby Bug#22007] Inconsistent type checking on rescue

Issue #22007 has been updated by zenspider (Ryan Davis).


Eregon (Benoit Daloze) wrote in #note-2:
> I think a better fix, related to this issue, would be to stop checking the class of rescue clauses, I think any expression should be allowed and just call `===` on them.
> 
> So one could do e.g.:
> ```ruby
> begin
>   raise "nope"
> rescue -> e { e.message.include? "o" }
>   p :OK
> end
> ```

so what should `rescue /regexp/` do?

----------------------------------------
Bug #22007: Inconsistent type checking on rescue
https://bugs.ruby-lang.org/issues/22007#change-117070

* Author: zenspider (Ryan Davis)
* Status: Open
* ruby -v: 4.0.2
* Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN
----------------------------------------
this works fine (but I don't think it should):
```ruby
begin
  raise "nope"
rescue RuntimeError, /why am I allowed?/, "or me?" => e
  # yay
end
```
whereas this version shows a type error, which seems right:
```ruby
begin
  begin
    raise "nope"
  rescue /why am I NOT allowed/, "if I was allowed before?" => e
    p e
  end
rescue TypeError => te
  p te
end
```
I think all the args on rescue should be checked to be `Module`



-- 
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