From c99b2b712b9a81286ca227c7b00e9181283502aa Mon Sep 17 00:00:00 2001
From: Glenn Rice <grice1@missouriwestern.edu>
Date: Sun, 5 Jul 2026 15:50:51 -0500
Subject: [PATCH] Fix a typo in `mqeditor.js`.

There is no `addToolbarButton` method.  It is `addToolbarButtons`. This
was caused when I changed the MathQuill api, but forgot to change this.

As a result, if an answer uses `parserLogb.pl` the `subscript` button is
not added to the toolbar, and a console log error occurs when this
non-existent method is called.

For a problem to test this with you could use:

```PG
DOCUMENT();

loadMacros(qw(PGstandard.pl PGML.pl parserLogb.pl));

Parser::Logb->Enable;
$n = logb(3, 5);

BEGIN_PGML
Enter [`\log_3(5)`]: [_]{$n}{5}
END_PGML

ENDDOCUMENT();
```
---
 htdocs/js/MathQuill/mqeditor.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/htdocs/js/MathQuill/mqeditor.js b/htdocs/js/MathQuill/mqeditor.js
index 30d6b9f76..b08d0ea8c 100644
--- a/htdocs/js/MathQuill/mqeditor.js
+++ b/htdocs/js/MathQuill/mqeditor.js
@@ -279,7 +279,7 @@
 		answerQuill.textarea = answerQuill.querySelector('textarea');
 
 		if (!cfgOptions.logsChangeBase) {
-			answerQuill.mathField.options.addToolbarButton(
+			answerQuill.mathField.options.addToolbarButtons(
 				{
 					id: 'subscript',
 					latex: '_',