Hacker. Lover of parentheses. Emacs fanatic. Author of RuboCop, CIDER, Emacs Prelude and Projectile. Maintainer of nREPL. Not the best, but pretty good.
Joined May 2010
- Tweets 19,762
- Following 891
- Followers 8,954
- Likes 16,684
503 Photos and videos
Pinned Tweet
17 Dec 2024
Great news, everyone! This year's "State of CIDER" survey is out! (see docs.google.com/forms/d/e/1F…)
Please, take the time to share there how you're using CIDER, so we can make it even better!
I'd appreciate it if you shared the survey around, so we can get as much input as possible from our beloved community!
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Emacs loves AsciiDoc batsov.com/articles/2026/06/…
I hope you'll enjoy all the recent improvements in adoc-mode and asciidoc-mode!
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Of course, without fluency in the language that your AI agents are using... good luck trying to assess their fluency. ;-)
I get the point Hamilton is trying to make, but I still feel more comfortable using languages where I have deeper expertise, especially for "real work".
Jun 4
Your fluency in a programming language matters a lot less now. AI's matters more.
Pick:
- Mainstream lang (so there's enough training data docs)
- Good attributes (perf, tooling, types)
Then focus on the product and architecture and let the agents run wild.
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Here's the slide deck from my "Future of RuboCop" talk at @RubyConfAT speakerdeck.com/bbatsov/rubo…
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Bozhidar (Bug) Batsov retweeted
May 27
This is such a good post. orchidfiles.com/im-tired-of-…
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The evolution of programming in the past couple of decades:
- 2000 - 2010 -> waiting for the compiler
- 2010 - 2025 -> waiting for the tests
- 2026 - ? -> waiting for my Claude Code account limits to reset
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Bozhidar (Bug) Batsov retweeted
May 30
The skills you worked hard to develop as a programmer are just as valid today in the world of AI agents. Link below.
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Good morning, world! ☀️🏆 Bulgaria just won Eurovision 2026 with Dara and Bangaranga! First place never looked this good. 🇧🇬🎉 What a historic night! Bangaranga all day long! #Eurovision #Bulgaria #Dara #Bangaranga
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RuboCop 1.85 is out! (github.com/rubocop/rubocop/r…)
It features many new cops, a built-in MCP server and many small fixes and improvements! The user docs have been reorganized and improved a lot as well!
Enjoy!
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RuboCop's website rubocop.org/ got revamped today!
Feedback welcome! (the site's hosted here github.com/rubocop/rubocop.o…)
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Vim 9.2 is out with many improvements vim.org/vim-9.2-released.php
It's great to see that the project is alive and well and that they finally tweaked some default settings to be better aligned with the times.
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Did anyone ask for a boatload of RuboCop bugfixes? You've got it github.com/rubocop/rubocop/r…
Enjoy!
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Bozhidar (Bug) Batsov retweeted
Feb 7
Roses are red, violets are blue —
the application form is waiting for YOU,
CFP closes in two! 😁
balkanruby.com/apply
#CFP #RubyConference #RubyCommunity #RubySpeakers #CallforSpeakers
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Bozhidar (Bug) Batsov retweeted
Jan 28
Modular explicits are coming to OCaml 5.5
🎊🫰🥳🎉🎂
github.com/ocaml/ocaml/pull/…
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Another record bites the dust! VAMOS, CARLOS!!!
Feb 1
History 🏆
Career slam complete, take a bow @carlosalcaraz 🇪🇸
@wwos • @espn • @tntsports • @wowowtennis • #AO26
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Not bad for an "old man"!!! The legend continues...
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