Merge pull request #1143 from mathjax/issue3301

Improve merging of math lists (mathjax/MathJax#3301).
mathjax · Nov 12, 2024 · d765f3f · d765f3f
2 parents 85673d2 + 3365a1b
commit d765f3f
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/ts/handlers/html/HTMLDocument.ts b/ts/handlers/html/HTMLDocument.ts
@@ -124,14 +124,16 @@ export class HTMLDocument<N, T, D> extends AbstractMathDocument<N, T, D> {
     nodes: HTMLNodeArray<N, T>
   ): Location<N, T> {
     const adaptor = this.adaptor;
-    for (const list of nodes[N]) {
-      const [node, n] = list;
+    const inc = 1 / (nodes[N].length || 1);
+    let i = N;
+    for (const [node, n] of nodes[N]) {
       if (index <= n && adaptor.kind(node) === '#text') {
-        return { node: node, n: Math.max(index, 0), delim: delim };
+        return { i, node, n: Math.max(index, 0), delim };
       }
       index -= n;
+      i += inc;
     }
-    return { node: null, n: 0, delim: delim };
+    return { node: null, n: 0, delim };
   }
 
   /**