Fix regression from #1367 (mathjax/MathJax#3498)

dpvc · dpvc · commit c500b6a34f92 · 2026-01-15T15:07:23.000-05:00
diff --git a/ts/core/MmlTree/MmlNode.ts b/ts/core/MmlTree/MmlNode.ts
@@ -1182,10 +1182,11 @@ export abstract class AbstractMmlBaseNode extends AbstractMmlNode {
       if (this.isEmbellished || base.isKind('mi')) {
         result = base.setTeXclass(prev);
         this.updateTeXclass(this.core());
-      } else if (base.isKind('TeXAtom')) {
-        this.texClass = base.texClass;
       } else {
         base.setTeXclass(null);
+        if (base.isKind('TeXAtom')) {
+          this.texClass = base.texClass;
+        }
       }
     }
     for (const child of this.childNodes.slice(1)) {

Original file line number	Diff line number	Diff line change
`@@ -1182,10 +1182,11 @@ export abstract class AbstractMmlBaseNode extends AbstractMmlNode {`
`1182`	`1182`	`if (this.isEmbellished \|\| base.isKind('mi')) {`
`1183`	`1183`	`result = base.setTeXclass(prev);`
`1184`	`1184`	`this.updateTeXclass(this.core());`
`1185`		`- } else if (base.isKind('TeXAtom')) {`
`1186`		`- this.texClass = base.texClass;`
`1187`	`1185`	`} else {`
`1188`	`1186`	`base.setTeXclass(null);`
	`1187`	`+ if (base.isKind('TeXAtom')) {`
	`1188`	`+ this.texClass = base.texClass;`
	`1189`	`+ }`
`1189`	`1190`	`}`
`1190`	`1191`	`}`
`1191`	`1192`	`for (const child of this.childNodes.slice(1)) {`