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fix(tui): harden Terminal.app render behavior

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Avoid Terminal.app paint corruption by disabling fast-echo in that terminal, sanitizing non-SGR control sequences before ANSI rendering, and defaulting Apple Terminal back to the safer 256-color path unless truecolor is explicitly requested.
This commit is contained in:
Brooklyn Nicholson 2026-05-16 22:51:51 -05:00
parent 3b39096904
commit 290bf93104
9 changed files with 214 additions and 10 deletions
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8
ui-tui/src/components/messageLine.tsx
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@ -12,6 +12,7 @@ import {
compactPreview,
hasAnsi,
isPasteBackedText,
sanitizeAnsiForRender,
stripAnsi
} from '../lib/text.js'
import type { Theme } from '../theme.js'
@ -85,13 +86,14 @@ export const MessageLine = memo(function MessageLine({
if (msg.role === 'tool') {
const maxChars = Math.max(24, cols - 14)
const stripped = hasAnsi(msg.text) ? stripAnsi(msg.text) : msg.text
const safeAnsi = hasAnsi(msg.text) ? sanitizeAnsiForRender(msg.text) : msg.text
const preview = compactPreview(stripped, maxChars) || '(empty tool result)'
return (
<Box alignSelf="flex-start" borderColor={t.color.muted} borderStyle="round" marginLeft={3} paddingX={1}>
{hasAnsi(msg.text) ? (
<Text wrap="truncate-end">
<Ansi>{msg.text}</Ansi>
<Ansi>{safeAnsi}</Ansi>
</Text>
) : (
<Text color={t.color.muted} wrap="truncate-end">
@ -129,13 +131,13 @@ export const MessageLine = memo(function MessageLine({
{msg.text.length.toLocaleString()} chars
</Text>
</Box>
{systemOpen && <Ansi>{msg.text}</Ansi>}
{systemOpen && <Ansi>{sanitizeAnsiForRender(msg.text)}</Ansi>}
</Box>
)
}
if (msg.role !== 'user' && hasAnsi(msg.text)) {
return <Ansi>{msg.text}</Ansi>
return <Ansi>{sanitizeAnsiForRender(msg.text)}</Ansi>
}
if (msg.role === 'assistant') {