Ruby Issue Tracking System

07/10/2025

08:51 AM Ruby Feature #21386: Introduce `Enumerable#join_map`

FWIW, this function is called `mapconcat` in Emacs: https://www.gnu.org/software/emacs/manual/html_node/elisp/Mapping... knu (Akinori MUSHA)

07/09/2025

04:57 AM Ruby Bug #21396: Set#initialize should call Set#add on items passed in

Jeremy, thanks for the reply.
Your point about thread-safety is well taken. It is an important advantage. As a p... knu (Akinori MUSHA)

07/08/2025

03:10 PM Ruby Bug #21375: Set[] does not call #initialize

I'm leaning toward making Set subclass-friendly again. That's how I've always wanted Set to be (unlike Array and Has... knu (Akinori MUSHA)

02:57 PM Ruby Bug #21396: Set#initialize should call Set#add on items passed in

Considering the feedback we've received about compatibility in the new experimental Set implementation, it may be in ... knu (Akinori MUSHA)

06/05/2025

01:43 PM Ruby Bug #21396: Set#initialize should call Set#add on items passed in

I've always created custom variants of Set too, and I don't think it's rare to find these in in-house codebases.
knu (Akinori MUSHA)

01:31 PM Ruby Bug #21376: Inconsistent equality between Sets with different compare_by_identity, different classes

This bug in optimization in Set#== deserves to be fixed, I think. In hindsight, adding Set#compare_by_identity might... knu (Akinori MUSHA)

12:30 PM Ruby Feature #21390: Deprecate passing arguments to Set#to_set and Enumerable#to_set

I can agree with this. As it turned out, subclassing the Set class did not become very common, so I think it's fine ... knu (Akinori MUSHA)

04/15/2025

03:16 AM Ruby Feature #21216: Implement Set as a core class

This is wonderful, and I feel like I should have done this long ago.
Here's some thoughts.
Set was initially de... knu (Akinori MUSHA)

09/10/2024

01:22 PM Ruby Feature #18368: Range#step semantics for non-Numeric ranges

The compatibility with `(:a .. :z).step(3)` has also been restored.
https://github.com/ruby/ruby/pull/11573 knu (Akinori MUSHA)

08/22/2024

03:11 AM Ruby Feature #18368: Range#step semantics for non-Numeric ranges

If we take this compatibility as important and go with it, should we give up `("a".."aaaa").step("a")` or support it? knu (Akinori MUSHA)