Merge pull request #630 from mathjax/issue2643

Fully clear tagging on equation start. (mathjax/MathJax#2643)
mathjax · Mar 29, 2021 · 1b4a161 · 1b4a161
2 parents c125626 + 1b2acc8
commit 1b4a161
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/ts/input/tex/Tags.ts b/ts/input/tex/Tags.ts
@@ -404,7 +404,7 @@ export class AbstractTags implements Tags {
   public clearTag() {
     this.label = '';
     this.tag(null, true);
-    this.currentTag.tagId = '';
+    this.currentTag = new TagInfo('', undefined, undefined);
   }
 
 
@@ -453,6 +453,9 @@ export class AbstractTags implements Tags {
    * @override
    */
   public startEquation(math: MathItem<any, any, any>) {
+    this.history = [];
+    this.stack = [];
+    this.clearTag();
     this.labels = {};
     this.ids = {};
     this.counter = this.allCounter;