Pinned
Here's the post I mentioned a few days ago—how AI coding agents enabled my leap from a decade of Ruby-only development to contributing to Sorbet, RBS parser, and ZJIT.
(Reposting to get the preview right)
Stan Lo
Stan Lo
3,404 posts
Stan Lo
@_st0012
Taiwanese 
/ Ruby committer / Shopify Ruby DX / Building developer tooling infrastructure / Maintain Ruby's default toolings: IRB, RDoc, Reline
/ Ruby committer / Shopify Ruby DX / Building developer tooling infrastructure / Maintain Ruby's default toolings: IRB, RDoc, RelineStan Lo’s posts
Ruby LSP now has a brand new documentation website featuring visual demos: shopify.github.io/ruby-lsp/
We're working hard to enrich the content with more feature demos and consolidated guides (addons, troubleshooting, roadmap, etc.). Stay tuned for updates! 
I wrote the debugger section of the latest Rails guide. I also plan to introduce:
- Breakpoints
- Tracers
- Useful configs for Rails apps
Let me know what you'd like to learn more about and I may add them in the future 
Excited to share that I became a Ruby committer today! A 10year goal since RubyKaigi 2015.
Huge thanks to for the JIT mentorship and nomination, for years of guidance, and everyone who supported me along the way.
Looking forward to improving Ruby and its DX!
Left: picture with my Ruby hero at ReddotRubyConf 2016
Right: picture with my Ruby hero and colleague at Ruby infra team
I guess dreams do come true 
My team (Ruby DX ) added a feature to ruby-lsp: when hovering over a Rails DSL, it’ll show you a link to its API document.
We want to make Rails more approachable to new devs through features like this. So let us know your thoughts about it!
github.com/Shopify/ruby-l
GIF
In the past 6 months, the Ruby DX team has made significant progress in enhancing Ruby LSP's understanding of Ruby and Rails programs. To showcase these improvements, I've compiled an article with video demos to help you grasp the new features!
I saw many Rubyists discussing LSP servers recently, so I want to share that we're also working on something:
For the first time, docs.ruby-lang.org/en/master is now using red 
instead of green 
, and with more selective highlighting.
Like the previous update, this isn’t final either. We plan to make incremental, continuous improvements to RDoc and docs.ruby-lang.org
instead of green , and with more selective highlighting.
Like the previous update, this isn’t final either. We plan to make incremental, continuous improvements to RDoc and docs.ruby-lang.org 
I've contributed 301 commits to ruby/debug since last May. That's on average 1 commit/day.
Maybe I'll be able to do more after I joined
next month
(Of course, I'll be doing more interesting stuff with the Ruby Infra team in addition to the debugger )
(Of course, I'll be doing more interesting stuff with the Ruby Infra team in addition to the debugger )
海外工作最大的惡夢之一就是失業要擔心被踢出境、換工作還要看有沒有贊助簽證
即便扣掉實務上的限制，長期抱有這種焦慮就可能導致偏向保守的職涯選擇，進而錯失當初出國所追尋的機會
這也是我一直也來都推 Global Talent Visa 的主要原因。有興趣的話我非常推薦卡卡這篇優質文章 x.com/yschen25/statu
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Incredibly honored to be a Ruby Prize 2025 finalist! Thank you to everyone who has supported my work on IRB, RDoc, debug, ZJIT, and other Ruby projects.
See you in Matsue!
Let’s give Ruby’s English documentation new homepages! If this is accepted in time, it’ll be applied to the upcoming Ruby 3.4 documentation. We can then explore ways to backport similar changes to older Ruby versions.
PR: github.com/ruby/ruby/pull
This summer I started working on Ruby's new JIT compiler—ZJIT, with zero JIT background
After two months of learning, I wrote about the questions that puzzled me most:
- Where does JIT code live?
- How does Ruby execute it?
- And more!
