ruby.git/lib/prism/polyfill/warn.rb, branch v4.0.3 The Ruby Programming Language [ruby/prism] Fix warn polyfill when no uplevel is provided 2025-09-15T11:03:12+00:00 Earlopain 14981592+Earlopain@users.noreply.github.com 2025-09-15T06:39:30+00:00 9299cf31b1607859daf89772b777f19f426bed80 An unspecified uplevel is not the same as an uplevel of 1: ``` $ irb irb(main):001> warn("foo") foo => nil irb(main):002> warn("foo", uplevel: 1) /home/user/.rbenv/versions/2.7.8/lib/ruby/gems/2.7.0/gems/irb-1.14.0/lib/irb/workspace.rb:121: warning: foo => nil ``` https://github.com/ruby/prism/commit/dcedd14357 
An unspecified uplevel is not the same as an uplevel of 1:

```
$ irb
irb(main):001> warn("foo")
foo
=> nil
irb(main):002> warn("foo", uplevel: 1)
/home/user/.rbenv/versions/2.7.8/lib/ruby/gems/2.7.0/gems/irb-1.14.0/lib/irb/workspace.rb:121: warning: foo
=> nil
```

https://github.com/ruby/prism/commit/dcedd14357
[ruby/prism] Polyfill Kernel#warn category parameter 2025-03-19T21:03:18+00:00 Kevin Newton kddnewton@gmail.com 2025-03-19T18:54:12+00:00 050ffab82b1a855d6b6edf5fbc6dc8c9311b6556 https://github.com/ruby/prism/commit/d85c72a1b9 
https://github.com/ruby/prism/commit/d85c72a1b9