Ruby Issue Tracking System

07/30/2026

02:07 AM Ruby Bug #22216: Regexp backref and IO lastline are incompatible with Ractor

> ethically detectable
statically detectable headius (Charles Nutter)

02:06 AM Ruby Bug #22216: Regexp backref and IO lastline are incompatible with Ractor

Oh, it's also worth pointing out that there are Regexp method equivalents of each of the special backref variables (`last_match` etc). They are less commonly used, I believe, and usually called directly on Regexp, but that's another exam... headius (Charles Nutter)

02:03 AM Ruby Bug #22216: Regexp backref and IO lastline are incompatible with Ractor

> it's easy to know if a method access these special variables (getspecial instruction),
That is not sufficient. There are methods that read *and* write these special variables without the user ever accessing the literal globals.
... headius (Charles Nutter)

07/29/2026

07:45 PM Ruby Bug #22216: Regexp backref and IO lastline are incompatible with Ractor

> I've always considered this a bug. If possible they should definitely be scoped to the current thread (or rather fiber?).
I prototyped this for JRuby some years ago, and I believe Rubinius (and perhaps TruffleRuby) implemented it this... headius (Charles Nutter)

07/28/2026

09:45 PM Ruby Bug #22216 (Open): Regexp backref and IO lastline are incompatible with Ractor

## Problem
Several Regexp-matching methods currently write (and sometimes read) the implicit "backref" `$~` variable in the local frame (and related variables like `$'`).
Several IO methods read or write the "last line" `$_` variab... headius (Charles Nutter)

07/17/2026

09:17 PM Ruby Feature #22135: Remove obsolete `ObjectSpace#_id2ref`

I am very happy to see this go. Thanks everyone! headius (Charles Nutter)

07/09/2026

08:27 PM Ruby Bug #22133: Ruby's default SIGINT handling ignores `Thread.handle_interrupt` masking.

JRuby does not by default trap `SIGINT` to raise `Interrupt`, since that would interfere with the JVM's own clean shutdown connected to `SIGINT` by default. Users can opt into that behavior if they want.
If a JRuby user traps `SIGINT`... headius (Charles Nutter)

06/30/2026

03:35 PM Ruby Feature #22137: Change `Symbol#to_s` to return frozen strings

Related discussions in https://bugs.ruby-lang.org/issues/16150 where I proposed a way to request frozen strings from `to_s`. I've always been +1 for all immediate values that return the same string content every time to return frozen str... headius (Charles Nutter)

06/26/2026

06:18 PM Ruby Feature #22130: Add a new YARV instruction for a `String.new` fast path

Is your benchmark published somewhere? headius (Charles Nutter)

06/09/2026

02:12 PM Ruby Feature #22097: Add Proc#with_refinements

Thank you for considering JRuby! I will review your PR and also start a ruby-4.1 branch you can target. headius (Charles Nutter)