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ESSAYFebruary 4, 2026·1 min read·[rust][systems]

Writing a terminal emulator in Rust from scratch


Rust’s ownership model maps well to PTY masters and parser state machines. This post sketches the architecture for a GPU-rendered terminal emulator.

PTY setup

Allocate with libc or nix, then spawn the shell on the slave side.

Parser pipeline

Bytes flow: stdin → ANSI parser → grid → render. Keep parsing incremental for streaming.

fn main() {
    println!("hello terminal");
}