Function extractModelSection

src/node/utils/main/markdown.ts:132–166

(markdown: string, modelId: string)

 * would be misleading.
 */
export function extractModelSection(markdown: string, modelId: string): string | null {
  if (!markdown || !modelId) return null;

  const headingPattern = /^model:\s*(.+)$/i;

  const compileRegex = (pattern: string): RegExp | null => {
    const trimmed = pattern.trim();
    if (!trimmed) return null;

    if (trimmed.startsWith("/") && trimmed.lastIndexOf("/") > 0) {
      const lastSlash = trimmed.lastIndexOf("/");
      const source = trimmed.slice(1, lastSlash);
      const flags = trimmed.slice(lastSlash + 1);
      try {
        return new RegExp(source, flags || undefined);
      } catch {
        return null;
      }
    }

    try {
      return new RegExp(trimmed, "i");
    } catch {
      return null;
    }
  };

  const matches = extractSectionsByHeading(markdown, (headingText) => {
    const match = headingPattern.exec(headingText);
    if (!match) return false;
    const regex = compileRegex(match[1] ?? "");
    return Boolean(regex?.test(modelId));
  });
  return joinMatchedSections(matches);
}

/**
 * Extract the content under every heading titled "Tool: <tool_name>" (case-insensitive),