INNER CODE UNIT · TypeScript

fallbackMatch

RyanYipeng/SyncCaster · apps/extension/src/content-scripts/index.ts:236

    const fallbackMatch = serialized.match(/<(?:m:)?annotation[^>]*>([\s\S]*?)<\/(?:m:)?annotation>/i);
    if (fallbackMatch && fallbackMatch[1]) {
      const tex = decodeHtmlEntities(fallbackMatch[1].trim());
      if (tex && /[a-zA-Z\\{}_^]/.test(tex)) {
        console.log('[math] Found LaTeX via XMLSerializer fallback:', tex.substring(0, 80));
        return tex;
      }
    }
  } catch (e) {
    console.log('[math] XMLSerializer failed:', e);
  }
  
  // 方法2：直接从 annotation 元素获取
  const annotationSelectors = [
    'annotation[encoding="application/x-tex"]',
    'annotation',
  ];
  

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