Grapheme Clusters and Terminal Emulators
Copy and paste "🧑🌾" in your terminal emulator. How many cells forward did your cursor move? Depending on your terminal emulator, it may have moved 2, 4, 5, or 6 cells1. Yikes. This blog post describes why this happens and how terminal emulator and program authors can achieve consistent spacing for all characters. Character Grids, Historically Terminals operate on a grid of fixed size cells. Thi
Reorient GitHub Pull Requests Around Changesets
I've had the experience of using GitHub as a maintainer for very large open source projects (1000+ contributors), as an engineer for very large closed source corporate projects, and everything smaller. Through those experiences up to today, GitHub pull requests is where I spend almost all of my time while on GitHub, and to me its also unfortunately the most frustrating part of GitHub. There are a
Talk: Introducing Ghostty and Some Useful Zig Patterns
This is the text format of a talk I did for Zig Showtime. If you'd rather watch the video, you can find it on YouTube: Zig Showtime: Ghostty. The video also includes a Q&A session at the end which I did not include in this post. Hello! I'm excited to talk today about Ghostty. Ghostty is a brand new terminal emulator written from scratch in Zig. Note: at the time of writing this, Ghostty is still n
Integrating Zig and SwiftUI
Building a native GUI for a cross-platform application is a decades old problem. Nowadays, most people just don't and fallback to using a non-native experience such as Electron instead. One approach to building a native GUI for a cross-platform application is to write all of the business logic in a cross-platform language (C, Rust, Zig, etc.) and then write the platform-specific GUI code. This is
Using Nix with Dockerfiles
Nix is a powerful cross-platform package management tool. The benefits of Nix are far reaching, but one big benefit is that once you adopt Nix, you can get a consistent environment across development (on both Linux and Mac), CI, and production. I've been using Nix for many years and recently started building Docker images using a Dockerfile paired with Nix. This post will explain the benefits of t
Zig Build System Internals
Zig has a built-in build system for building projects. It runs on every platform Zig supports and is capable of building everything from simple executables and libraries to complex, multi-artifact, multi-step projects. This page will dive into how the internals of the Zig build system works. Build systems are an extremely important detail of any software project. When they work, they can feel like
Zig
This page collects my writing about the 🦎 Zig programming language. Compiler Internals An introduction to the internals of the Zig compiler. The articles currently cover an introduction of most of the compiler "frontend" -- the process from source code to just prior to machine code generation. Note: These are the internals for the self-hosted compiler, also known as the "stage2" compiler. At the
Abandoning Rubygems
Vagrant 1.1+ no longer supports RubyGems as an installation method. Instead, you must install Vagrant 1.1+ using pre-made packages or installers. For folks used to the gem-based installation, this has caused a mixture of confusion and disdain. In this post, I enumerate my reasons for abandoning RubyGems, and why it is better for the Vagrant community long-term. I initially released Vagrant as a Ru
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Ghostty Devlog 004