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Fix syntax highlighting stderr spam with malformed markdown, fixes #274

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This commit is contained in:
Mario Zechner 2025-12-22 00:23:01 +01:00
parent d5fd685901
commit 11e743373d
14 changed files with 183 additions and 43 deletions
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10
packages/coding-agent/src/modes/interactive/theme/theme.ts
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@ -4,7 +4,7 @@ import type { EditorTheme, MarkdownTheme, SelectListTheme } from "@mariozechner/
import { type Static, Type } from "@sinclair/typebox";
import { TypeCompiler } from "@sinclair/typebox/compiler";
import chalk from "chalk";
import { highlight } from "cli-highlight";
import { highlight, supportsLanguage } from "cli-highlight";
import { getCustomThemesDir, getThemesDir } from "../../../config.js";
// ============================================================================
@ -673,8 +673,10 @@ function getCliHighlightTheme(t: Theme): CliHighlightTheme {
* Returns array of highlighted lines.
*/
export function highlightCode(code: string, lang?: string): string[] {
// Validate language before highlighting to avoid stderr spam from cli-highlight
const validLang = lang && supportsLanguage(lang) ? lang : undefined;
const opts = {
language: lang,
language: validLang,
ignoreIllegals: true,
theme: getCliHighlightTheme(theme),
};
@ -773,8 +775,10 @@ export function getMarkdownTheme(): MarkdownTheme {
underline: (text: string) => theme.underline(text),
strikethrough: (text: string) => chalk.strikethrough(text),
highlightCode: (code: string, lang?: string): string[] => {
// Validate language before highlighting to avoid stderr spam from cli-highlight
const validLang = lang && supportsLanguage(lang) ? lang : undefined;
const opts = {
language: lang,
language: validLang,
ignoreIllegals: true,
theme: getCliHighlightTheme(theme),
};