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fix(tui): preserve fullscreen images in WezTerm

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closes #9169
This commit is contained in:
Armin Ronacher 2026-09-20 00:25:22 +02:00
parent d7951ec362
commit 803f0e906d
2 changed files with 17 additions and 1 deletions
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1
packages/tui/CHANGELOG.md
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@ -14,6 +14,7 @@
- Fixed LaTeX legacy font switches falling back to raw source, centered `cases` layouts around surrounding equations, and vertically laid out unsupported and nested display scripts ([#8827](https://github.com/earendil-works/pi/issues/8827), [#9564](https://github.com/earendil-works/pi/issues/9564), [#7929](https://github.com/earendil-works/pi/issues/7929)).
- Fixed fullscreen clipboard failures hiding actionable backend error messages behind a generic notice, and extended failure notices to five seconds ([#9618](https://github.com/earendil-works/pi/issues/9618)).
- Fixed fullscreen Kitty images being erased by later row clears in WezTerm ([#9169](https://github.com/earendil-works/pi/issues/9169)).
## [0.85.1] - 2026-09-05

17
packages/tui/src/tui-alt-screen.ts
View file

@ -1705,9 +1705,24 @@ export class TuiAltScreen extends TuiBase implements ViewportTUI {
}
buffer += preparedKittyScreen.evictedImageDeletion;
// WezTerm erases intersecting Kitty image cells when a later EL clears a covered row.
// Only separate clearing from drawing for WezTerm frames that place images; preserve the
// existing interleaved output for text-only frames and every other terminal.
const clearRowsBeforeKittyImages =
redrawImages &&
this.imageProtocol === "kitty" &&
screen.some(isImageLine) &&
(Boolean(process.env.WEZTERM_PANE) || process.env.TERM_PROGRAM?.toLowerCase() === "wezterm");
if (clearRowsBeforeKittyImages) {
for (let row = 0; row < height; row++) {
if (!fullRedraw && !imagesNeedRedraw && screen[row] === this.previousScreen[row]) continue;
buffer += `\x1b[${row + 1};1H\x1b[2K`;
}
}
for (let row = 0; row < height; row++) {
if (!fullRedraw && !imagesNeedRedraw && screen[row] === this.previousScreen[row]) continue;
buffer += `\x1b[${row + 1};1H\x1b[2K${preparedKittyScreen.lines[row] ?? ""}`;
buffer += `\x1b[${row + 1};1H${clearRowsBeforeKittyImages ? "" : "\x1b[2K"}${preparedKittyScreen.lines[row] ?? ""}`;
}
if (cursorPos) {