fix: embedding params escape

src/components/markdown-viewer/utils.ts

@@ -32,24 +32,60 @@ export function escapeDollarNumber(text: string) {
   return escapedText;
 }
 
-export function escapeBrackets(text: string) {
-  const pattern =
-    /(```[\S\s]*?```|`.*?`)|\\\[([\S\s]*?[^\\])\\]|\\\((.*?)\\\)/g;
-  return text.replaceAll(
-    pattern,
-    (match, codeBlock, squareBracket, roundBracket) => {
-      if (codeBlock) {
-        return codeBlock;
-      } else if (squareBracket) {
-        return `$$${squareBracket}$$`;
-      } else if (roundBracket) {
-        return `$${roundBracket}$`;
-      }
-      return match;
-    }
+export function escapeBrackets(text: string): string {
+  const codeRegex = /```[\s\S]*?```|`[^`\n]+`/g;
+
+  const codeBlocks: string[] = [];
+  const placeholder = '%%CODE_BLOCK%%';
+
+  // 1. replace code blocks with a placeholder
+  //    and store them in an array
+  const temp = text.replace(codeRegex, (match) => {
+    codeBlocks.push(match);
+    return placeholder;
+  });
+
+  // 2. repace \[...\] with $$...$$，and replace \(...\) with $...$
+  const replaced = temp
+    .replace(/\\\[([\s\S]*?)\\\]/g, (_, inner) => `$$${inner}$$`)
+    .replace(/\\\(([\s\S]*?)\\\)/g, (_, inner) => `$${inner}$`);
+
+  // 3. restore code blocks from the placeholder
+  let i = 0;
+  return replaced.replace(
+    new RegExp(placeholder, 'g'),
+    () => codeBlocks[i++] || ''
   );
 }
 
-export function escapeMhchem(text: string) {
+export function escapeMhchem_2(text: string) {
   return text.replaceAll('$\\ce{', '$\\\\ce{').replaceAll('$\\pu{', '$\\\\pu{');
 }
+
+export function escapeMhchem(text: string): string {
+  const codeRegex = /```[\s\S]*?```|`[^`\n]+`/g;
+  const codeBlocks: string[] = [];
+  const placeholder = '%%CODE_BLOCK%%';
+
+  // 1. Replace code blocks with a placeholder
+  const temp = text.replace(codeRegex, (match) => {
+    codeBlocks.push(match);
+    return placeholder;
+  });
+
+  // 2. Only perform \ce{} / \pu{} escaping inside $...$ (to avoid incorrect escaping outside math environments)
+  const mathRegex = /\$(.+?)\$/gs;
+  const escaped = temp.replace(mathRegex, (_, content) => {
+    const fixed = content
+      .replace(/(?<!\\)\\ce\{/g, '\\\\ce{')
+      .replace(/(?<!\\)\\pu\{/g, '\\\\pu{');
+    return `$${fixed}$`;
+  });
+
+  // 3. Restore code blocks
+  let i = 0;
+  return escaped.replace(
+    new RegExp(placeholder, 'g'),
+    () => codeBlocks[i++] || ''
+  );
+}