Kitty Enables Accurate Complex Script Rendering

In 2026, developer Santhosh explains why terminal emulators still fail to render complex Indic and Arabic scripts, tracing problems to the character-cell grid, wcwidth(), and lack of shaping. He highlights Kitty's OSC 66 text-sizing protocol and introduces osc66, a Rust CLI that emits OSC 66 escape sequences to set per-cluster cell widths, demonstrating a practical path to legible terminal rendering.