Ruby Issue Tracking System

05/17/2026

05:05 AM Ruby Feature #21857: Introduce to_proc pattern

I understand the motivation, but I'm still not fully convinced that this particular use case is enough to justify introducing dedicated syntax.
There are similar requests as well, such as wanting to match based on `respond_to?`. It migh... ktsj (Kazuki Tsujimoto)

11/05/2025

03:35 PM Ruby Revision af6a6a2a (git): Update power_assert to 3.0.1

ktsj (Kazuki Tsujimoto)

11/02/2025

02:38 PM Ruby Revision ee7ce9e6 (git): Update power_assert to 3.0.0

ktsj (Kazuki Tsujimoto)

10/21/2025

03:45 PM Ruby Feature #21572: Make illegal variable in alternation pattern a syntax error

I agree with you, @kddnewton.
Your proposal makes sense. ktsj (Kazuki Tsujimoto)

05/15/2025

03:05 PM Ruby Revision c3eb4068 (git): Update power_assert for `opt_new`

https://bugs.ruby-lang.org/issues/21298#note-5 ktsj (Kazuki Tsujimoto)

05/05/2025

05:27 AM Ruby Bug #21298: `ObjectSpace.allocation_class_path` returns inconsistent results depending on `TracePoint` state

> Would it be possible for power_assert to avoid depending on Class#new being present in the stack trace?
I updated power_assert.
https://github.com/ruby/power_assert/pull/56
Now, it should work. ktsj (Kazuki Tsujimoto)

12/23/2024

06:01 AM Ruby Revision f2d1c3d3 (git): [DOC] Fix a typo in NEWS.md

ktsj (Kazuki Tsujimoto)

05:57 AM Ruby Revision 8947e53b (git): Update power_assert to 2.0.5

ktsj (Kazuki Tsujimoto)

12/20/2024

06:55 AM Ruby Bug #20973 (Closed): `it` in pattern matching pin operator causes BUG

```
$ ./miniruby --parser=prism -e 'tap { 0 => ^it }'
-e: [BUG] Unexpected node type in pattern matching expression: PM_IT_LOCAL_VARIABLE_READ_NODE
ruby 3.4.0dev (2024-12-20T00:48:01Z master 978df259ca) +PRISM [x86_64-linux]
```
W... ktsj (Kazuki Tsujimoto)

10/06/2024

04:07 AM Ruby Bug #20785: Should `a in b, and c` `a in b, or c` `a in b, rescue c` be syntax ok?

I agree with tompng's proposal.
> I'm guessing that `a in b`, is parsed as `a in [b,]` but a trailing comma like that is just too wild for me
`in` (`=>`) can be considered right assignment.
And, I think it makes sense that a trail... ktsj (Kazuki Tsujimoto)