Ruby Issue Tracking System

09/11/2025

09:41 PM Ruby Feature #21564: Extend permutation, repeated_permutation, combination and repeated_combination arguments

@duerst When final number of permutations is small - there is no problem materialising all of them and joining in one array using `flat_map`, but when number of permutations/combinations is big and there is no need to get all results in ... toy (Ivan Kuchin)

09/08/2025

10:27 PM Ruby Feature #21564: Extend permutation, repeated_permutation, combination and repeated_combination arguments

@nobu I was not sure what to select, Enumerable or multiple arguments, changed the proposal to use multiple arguments
@mame I've added few use cases toy (Ivan Kuchin)

09/07/2025

07:00 PM Ruby Feature #21564 (Open): Extend permutation, repeated_permutation, combination and repeated_combination arguments

When using functions `permutation`, `repeated_permutation`, `combination` and `repeated_combination`, often one needs not one, but multiple permutation/combination sizes. Currently all functions accept one Integer argument (for `permutat... toy (Ivan Kuchin)

03/21/2025

02:47 PM Ruby Bug #21196 (Closed): Ruby 3.4 ignores visibility when passing arguments using `...`

If method is passing arguments using `...`, then receiver visibility gets ignored if once called without receiver:
```ruby
class A
private
def foo = :foo
def bar = :bar
end
class B
def initialize(o)
@o = o
end... toy (Ivan Kuchin)

01/31/2025

05:02 PM Ruby Bug #21102 (Rejected): Unexpected encoding when concatenating ASCII string with ASCII compatible string with non ASCII encoding

The problem was noticed in code that is boiled down to:
```ruby
# encoding: UTF-8
str = "something"
p str.encoding # => #<Encoding:UTF-8>
p [nil, str].join.encoding # => #<Encoding:US-ASCII>
```
As `nil.to_s` is an empty str... toy (Ivan Kuchin)

11/16/2024

12:51 PM Ruby Feature #20899: Reconsider adding `Array#find_map`

nobu (Nobuyoshi Nakada) wrote in #note-1:
> As for this name, I’m not sure if it is appropriate, though.
Few more ideas for the name:
```rb
# to not explicitly use word "map" if it feels confusing
find_mapped
find_transform
fi... toy (Ivan Kuchin)

11/15/2024

10:41 PM Ruby Feature #20899 (Open): Reconsider adding `Array#find_map`

I would like to retry proposing method `Array#find_map` that was rejected in [8421](https://bugs.ruby-lang.org/issues/8421) which happened before introduction of `filter_map` in [15323](https://bugs.ruby-lang.org/issues/15323).
It would... toy (Ivan Kuchin)

08/27/2024

08:13 PM Ruby Feature #20702 (Closed): Add `Array#fetch_values`

`Array` and `Hash` have matching methods to fetch:
* One value using `[]` (`Array` also allows fetching multiple with range or two arguments)
* One value with default or exception using `fetch` method
* Multiple values using `values... toy (Ivan Kuchin)

10/15/2023

04:46 PM Ruby Bug #19917: Segmentation fault or lost objects when using Ractor.select with moved exceptions

I wasn't able to reproduce segmentation fault, but even if segmentation fault is caused by `Marshal`, it doesn't explain lost messages (when `Ractor.select` returns a ractor and `"message got lost"`). toy (Ivan Kuchin)

10/10/2023

12:17 PM Ruby Bug #19917 (Closed): Segmentation fault or lost objects when using Ractor.select with moved exceptions

I stumbled upon loss of messages with exceptions or even Segmentation fault during transfer of exception from Ractor when moving the exception. In versions 3.0 and 3.1 I saw only loss of messages, in 3.2 also Segmentation fault. Loss of ... toy (Ivan Kuchin)