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fix(tui): preserve prompt separator width (#19340)

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* fix(tui): preserve prompt separator width

* fix(tui): align transcript height estimates with prompt width
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asheriif 2026-05-04 18:58:40 +02:00 • committed by GitHub
parent d9c090fe36
commit 0ce1b9fe20
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6 changed files with 85 additions and 7 deletions
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10
ui-tui/src/lib/inputMetrics.ts
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@ -1,5 +1,7 @@
import { stringWidth } from '@hermes/ink'
import type { Role } from '../types.js'
export const COMPOSER_PROMPT_GAP_WIDTH = 1
let _seg: Intl.Segmenter | null = null
@ -162,6 +164,14 @@ export function composerPromptWidth(promptText: string) {
return Math.max(1, stringWidth(promptText)) + COMPOSER_PROMPT_GAP_WIDTH
}
export function transcriptGutterWidth(role: Role, userPrompt: string) {
return role === 'user' ? composerPromptWidth(userPrompt) : 3
}
export function transcriptBodyWidth(totalCols: number, role: Role, userPrompt: string) {
return Math.max(20, totalCols - transcriptGutterWidth(role, userPrompt) - 2)
}
export function stableComposerColumns(totalCols: number, promptWidth: number) {
// Physical render/wrap width. Always reserve outer composer padding and
// prompt prefix. Only reserve the transcript scrollbar gutter when the