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fix: TUI crash with Unicode characters in branch selector

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- Use truncateToWidth instead of substring in user-message-selector.ts
- Fix truncateToWidth to use Intl.Segmenter for proper grapheme handling
- Add tests for Unicode truncation behavior
This commit is contained in:
Mario Zechner
2025-12-05 11:59:39 +01:00
parent ed2c182501
commit 240064eec3
4 changed files with 121 additions and 22 deletions
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6
packages/coding-agent/src/tui/user-message-selector.ts
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@@ -1,4 +1,4 @@
import { type Component, Container, Spacer, Text } from "@mariozechner/pi-tui";
import { type Component, Container, Spacer, Text, truncateToWidth } from "@mariozechner/pi-tui";
import { theme } from "../theme/theme.js";
import { DynamicBorder } from "./dynamic-border.js";
@@ -54,8 +54,8 @@ class UserMessageList implements Component {
// First line: cursor + message
const cursor = isSelected ? theme.fg("accent", "› ") : " ";
const maxMsgWidth = width - 2; // Account for cursor
const truncatedMsg = normalizedMessage.substring(0, maxMsgWidth);
const maxMsgWidth = width - 2; // Account for cursor (2 chars)
const truncatedMsg = truncateToWidth(normalizedMessage, maxMsgWidth);
const messageLine = cursor + (isSelected ? theme.bold(truncatedMsg) : truncatedMsg);
lines.push(messageLine);