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How Bluesky draws its logo on screenshots
The secret is humble UITextField.
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It's still ok to enjoy programming
Programming is fun!
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Kimi K2.6: Advancing open-source coding
Kimi K2.6 advances open-source coding, featuring long-horizon coding, coding-driven design, agent swarms, proactive agents, and the Claw Groups research preview.
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Breaking Up with Google Play: Why Conversations Is Now Free
Conversations, my federated instant messaging client for Android, started out as many traditional open-source projects do: as an attempt to scratch my own itch. Development started in January 2014 in my student dormitory, and within weeks I started dogfooding and using the client as the primary means of communicating…
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I found a useful Git one liner buried in leaked CIA developer docs
How to delete all merged git branches locally with a single command. This one-liner has been in my zshrc since 2017 — I found it buried in the CIA's Vault7 l...
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Mythos Finds a Curl Vulnerability
yes, as in singular one. Back in April 2026 Anthropic caused a lot of media noise when they concluded that their new AI model Mythos is dangerously good at finding security flaws in source code. Apparently Mythos was so good at this that Anthropic would not release this model to the public yet but instead … Continue…
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Jev in 25 Lines of Python
Everyone is talking about Jev - here it is in 25 lines of Python.
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What's up with all those equals signs anyway?
For some reason or other, people have been posting a lot of excerpts from old emails on Twitter over the last few days. The most vital question everybody’s asking themselves is: What’s …
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You said no MCP
Pi now supports MCP. Why we changed our minds, what changed in MCP and in Pi, and what Codemode is.
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Accelerating Gemma 4: faster inference with multi-token prediction drafters
An overview of how Multi-Token Prediction (MTP) drafters are making Gemma 4 models up to 3x faster at inference.
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The Zig project's rationale for their anti-AI contribution policy
Zig has one of the most stringent anti-LLM policies of any major open source project: No LLMs for issues. No LLMs for pull requests. No LLMs for comments on the …
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Small programming tricks
A lot of effective engineering comes from the accumulation of small nuggets of knowledge.
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Bugs Rust won't catch
In April 2026, Canonical disclosed 44 CVEs in uutils, the Rust reimplementation of GNU coreutils that ships by default since 25.10. Most of them came out of an external audit commissioned ahead of the 26.04 LTS. I read through the list and thought th…
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Before GitHub
Open Source before GitHub was reputation-driven and full of friction
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Delta
From the Zed Blog: A multiplayer environment for coding with agents, from the creators of Zed.
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Muse Wonder
Muse Wonder is Meta's frontier AI model that keeps track of what matters to you with Active Memory & Active Focus to work towards your goals at work & life.
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Everyone should know SIMD
SIMD has a reputation for being complex. I've met many very good software engineers who dismiss it as something too complex to learn or a niche optimization meant for only the highest-performance software, not useful in everyday programming.
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The future of version control
A Coherent Vision for the Future of Version Control
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There's no reason for software to be slow anymore
The other day, I saw a viral tweet saying that people talking about how LLMs are causing slow, bloated, code are going to eat crow once they re-write everything in super-optimized assembly. We're not quite at the point where we want to write everything in assembly , but some variant of what Nolan Lawson said about…
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I decompiled the White House's new app
The official White House Android app has a cookie/paywall bypass injector, tracks your GPS every 4.5 minutes, and loads JavaScript from some guy's GitHub Pages.
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Making WebAssembly a first-class language on the Web
This post is an expanded version of a presentation I gave at the recent WebAssembly CG meeting in Munich. WebAssembly has come a long way since its first release in 2017. The 1.0 version of WebAssembly was already a great fit for low-level languages like C and C++, and immediately enabled many new kinds of…
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1-Click GitHub Token Stealing via a VSCode Bug
My blog, mostly about programming
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Start all of your commands with a comma (2009)
Like many Unix users, I long ago created a ~/bin/ directory in my home directory and added it to my PATH so that I could supplement the wonderfully rich set of basic Unix commands with some conveniences and shell scripts of my own devising.
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WorldTUI: I trained a 360M model to pretend to be a terminal
A 360M model that pretends to be a terminal, and remembers what you did
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A sufficiently detailed spec is code
Specifications do not address the limitations of agentic coding
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Shell Tricks That Make Life Easier (and Save Your Sanity)
Watch someone backspace 40 characters instead of pressing CTRL+W, and you’ll understand why this list exists. A collection of shell tricks-grouped by what works everywhere and what’s Bash/Zsh-speci...
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Native Instant Space Switching on macOS
Arhan's Blog
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Finding and fixing Ghostty's largest memory leak
A few months ago, users started reporting that Ghostty was consuming absurd amounts of memory, with one user reporting 37 GB after 10 days of uptime. Today, I'm happy to say the fix has been found and merged . This post is an overview of what caused the leak, a look at some of Ghostty's internals, and some brief…