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Writing a terminal emulator in Rust from scratch

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Rust’s ownership model maps well to PTY masters and parser state machines. This post sketches the architecture used in term-v0.

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!("term-v0");
}

More detail in the project page.

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published2026-02-04
words61
read time1 min
categorytutorial
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projectterm-v0