an opinionated terminal multiplexer in C with programmable pane chrome https://git.sl0p.foo/slosh.git/atom/vendor/libghostty-vt/src/apprt?h=master 2026-09-02T13:45:32Z 2026-09-02T13:45:32Z user user@clank 2026-09-02T13:45:32Z urn:sha1:311979f10132697b990a670c6c99b19c1c33d623 Three weeks of upstream: 504 commits, 120 touching the terminal core -- OSC 5522, kitty relative placements, C0 fixes, the wuffs pixel path. Rebuilt from ghostty's own dist step (zig build dist -Demit-lib-vt=true), zig floor unchanged at 0.16.0, and slosh's C usage compiled unmodified. Patch 0001 is re-implemented, not retired: upstream rewrote the area into ImageStorage.clearScreen but kept the behaviour we patch out -- a terminal clear still reclaims transmitted-but-unplaced images, which breaks the upload-once place-per-frame pattern the protocol's two verbs exist for. The patch now removes just that sweep; the placement clearing and orphan reaping stay upstream's. Their recent 'preserve data on unmatched delete' fixes the same class of bug, so sending ours upstream remains the way to actually retire it. 2026-08-24T08:01:26Z user user@clank 2026-08-24T08:01:26Z urn:sha1:75774b64ecfdbbfc6df78e34fb489ed21e401386 The build/ pattern matched every directory of that name, not just our build output at the root -- so vendor/libghostty-vt/src/build/ (the library's own build.zig helpers) never made it into git, and make vendor broke on fresh clones. Anchor the ignore to /build/ and restore the 284 files it had silently dropped. 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.