an opinionated terminal multiplexer in C with programmable pane chrome https://git.sl0p.foo/slosh.git/atom/vendor/libghostty-vt/src/font/CodepointResolver.zig?h=master 2026-08-13T20:00:03Z 2026-08-13T20:00:03Z sl0p sl0p@sl0p.foo 2026-08-13T20:00:03Z urn:sha1:2c1b855c3cf8cf8841bf25cd939e478a7f0bfac8 Design contract in DESIGN.md. libghostty-vt vendored fresh from ghostty main@bedb6f2 (zig 0.16), built to a 14MB static lib. M0: pty spawn (no libutil), a lib-vt terminal per pane, a screen cell buffer, a diff emitter that repaints only what changed, raw mode, SIGWINCH, and a ~120Hz frame cap that coalesces pty reads. Also the seed of the headless harness: --headless dumps the composited screen without a tty, so composition is testable in milliseconds. tests/live_m0.py covers what headless cannot: raw mode, the diff emitter, resize propagation, and the quit path. 6/6 green.