From: "peterzhu2118 (Peter Zhu) via ruby-core" <ruby-core@...>
Date: 2025-09-17T17:14:58+00:00
Subject: [ruby-core:123285] [Ruby Misc#21609] Propose Stan Lo (@st0012) as a core committer

Issue #21609 has been updated by peterzhu2118 (Peter Zhu).


+1. Stan has been doing great work and really passionate about making the Ruby ecosystem better.

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Misc #21609: Propose Stan Lo (@st0012) as a core committer
https://bugs.ruby-lang.org/issues/21609#change-114656

* Author: tekknolagi (Maxwell Bernstein)
* Status: Open
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## Proposal

I'd like to propose Stan Lo (@st0012) as a committer. He's been doing excellent work on ZJIT for the past couple of months, making sure we're compatible with the test suite, analyzing benchmark data, and optimizing the generated code. Especially since he has been contributing to Ruby for years now and knows the community, I think he should be able to merge his own changes.

Here is Stan's message:

## Stan Lo's message

I have been contributing to Ruby and core Ruby tools since 2021\. My main contributions have been:

### ZJIT Contributions ([60+ PRs](https://github.com/ruby/ruby/pulls?q=is%3Apr+author%3Ast0012+ZJIT+is%3Aclosed))

- Made ZJIT work with TracePoint ([\#14407](https://github.com/ruby/ruby/pull/14407), [\#14420](https://github.com/ruby/ruby/pull/14420))  
- Built infrastructure for annotating builtin functions ([\#14078](https://github.com/ruby/ruby/pull/14078))  
- Implemented invalidation for method redefinition ([\#13875](https://github.com/ruby/ruby/pull/13875)), stable constants ([\#13998](https://github.com/ruby/ruby/pull/13998)), single Ractor mode ([\#14121](https://github.com/ruby/ruby/pull/14121))  
- Supported compiling instructions: `concatstrings` ([\#14154](https://github.com/ruby/ruby/pull/14154)), `opt_and`/`opt_or` ([\#13830](https://github.com/ruby/ruby/pull/13830)), `invokeblock` ([\#14496](https://github.com/ruby/ruby/pull/14496)), `opt_case_dispatch` ([\#14433](https://github.com/ruby/ruby/pull/14433))  
- Expanded test infrastructure to run against all Ruby tests ([\#13950](https://github.com/ruby/ruby/pull/13950))

### Core Ruby Tools

- **IRB** \- [All-time \#1 contributor](https://github.com/ruby/irb/graphs/contributors) and maintainer since 2022  
  - Implemented major features across Ruby 3.2-3.4: `cd` command, `edit` command, `show_cmds`, pager support, integration with `ruby/debug`���etc.  
- **RDoc** \- Maintainer since 2024  
  - Redesigned the default theme for Ruby 3.4+ ([\#1191](https://github.com/ruby/rdoc/pull/1191), [\#1157](https://github.com/ruby/rdoc/pull/1157))  
  - Created docs.ruby-lang.org with new homepage ([\#12227](https://github.com/ruby/ruby/pull/12227)) and greatly improved standard library page ([\#12404](https://github.com/ruby/ruby/pull/12404))  
- **Debug** \- [\#2 contributor with 400+ commits](https://github.com/ruby/debug/graphs/contributors)  
  - IRB integration ([\#1024](https://github.com/ruby/debug/pull/1024))  
  - `outline` command ([\#173](https://github.com/ruby/debug/pull/173))  
  - Backtrace filtering ([\#138](https://github.com/ruby/debug/pull/138))

I would like to continue contributing to ZJIT, IRB, RDoc, and other parts of Ruby. Being a committer would make it easier to maintain these critical tools and contribute to ZJIT's ongoing development.



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