Ruby Issue Tracking System

11/09/2026

01:17 PM Ruby Bug #22519: Incompatibility between parse.y and Prism in the encoding of interpolated strings

I found https://github.com/ruby/ruby/pull/11728. I'm guessing that introduced this behaviour, it used to always emit the empty string. Earlopain (Earlopain _)

11/03/2026

07:31 AM Ruby Bug #22497 (Closed): Reading a frozen Set held by another Ractor's class crashes

Earlopain (Earlopain _)

10/24/2026

04:42 PM Ruby Bug #22470 (Closed): Array#find and Array#rfind arity change between versions 3 and 4

Earlopain (Earlopain _)

10/22/2026

05:08 AM Ruby Revision 479bab3e (git): [ruby/prism] Remove a warning from `discarded-qualifiers`

I've been seeing this for a while now:
```
../../../../ext/prism/../../src/memchr.c: In function ‘pm_memchr’:
../../../../ext/prism/../../src/memchr.c:35:16: warning: return discards ‘const’ qualifier from pointer target type [-Wdiscarde... Earlopain (Earlopain _)

10/19/2026

07:50 PM Ruby Revision 2720e66e (git): [ruby/prism] Add a link to the playground for code examples

Gives it a bit more visibility
https://github.com/ruby/prism/commit/8e0cd483af Earlopain (Earlopain _)

05:54 PM Ruby Revision e4e11a71 (git): Fix some prism docs

The current version is too dynamic for rdoc
and so C methods like `Ruby::Prism.lex` are not doccumented.
Also tweak `Ruby::Prism` introduction. Ruby makes breaking changes
in minor versions all the time, no need to call it out. Earlopain (Earlopain _)

11:19 AM Ruby Misc #21630 (Closed): Suggest @Earlopain for core contributor

Earlopain (Earlopain _)

10/13/2026

07:17 PM Ruby Revision a4ccceac (git): [ruby/prism] Make code examples explicitly ruby for rdoc

Because of the `^^^` hints, it's not valid ruby and so rdoc
gives it no syntax highlighting.
We can convince it otherwise and syntax-highlight syntax-invalid code.
Although it is syntax-invalid, the results look very good.
https://gith... Earlopain (Earlopain _)

10/12/2026

11:39 AM Ruby Revision bb12f054 (git): [ruby/prism] Initialize `filepath` option to the empty string

Same as `current_string`, set it to be empty.
Similarly, when populating user-provided options, we need to check the lengh, same as for `encoding`.
Closes https://github.com/ruby/prism/issues/4249
https://github.com/ruby/prism/commit/c... Earlopain (Earlopain _)

10/07/2026

11:02 AM Ruby Feature #22379: Remove prism mismatch warning from `#syntax_tree`

Currently it loudly returns the correct node and I would simply always ignore this warning because it is just noise. Should I ever hit the case where it is actually different I would never know.
On `Ruby::Prism`, I believe that approa... Earlopain (Earlopain _)