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#+TITLE: EAT XTWINOPS patch companion note
#+SOURCE: from rulesets
#+DATE: 2026-07-13 10:58:54 -0500
EAT XTWINOPS patch (companion file eat-xtwinops.patch, sent separately just now): verified live on ratio 2026-07-13, this makes sixel images render AND persist in tmux inside EAT. Root cause chain: tmux 3.7b has native sixel but refuses to transmit unless it knows the client's cell pixel size; it asks via CSI 14 t (XTWINOPS), which EAT 0.9.4 silently ignores (its CSI dispatch has no 't' case). The patch adds eat--t-send-window-size-report answering CSI 14/16/18 t from eat--t-term-char-width/height and the display dims — same fields EAT's own XTSMGRAPHICS reply already uses. With it, tmux learns the geometry at client attach, ingests raw sixel into its grid, and re-emits on every redraw — images survive window switches, scrolling, and resizing (Craig verified visually). Needs on the emacsd side: (1) a durable home for the patch — the elpa file is version-pinned, so likely a load-path shadow or an advice-free vendored fix, your call, plus wiring so both daily drivers load it (velox verified ready: same tmux build, imagemagick present); (2) written test-first per testing.md when productionizing — this was a timeboxed spike, treat the diff as evidence not deliverable; (3) strongly consider sending it upstream to EAT (codeberg akib/emacs-eat) so 0.9.5+ ships it stock. tmux side is separate (two conf lines, handoff sent to dotfiles). Ask rulesets for the full investigation log if useful.
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