From 3f978d86f6e90fa6409b0a76eab65e6d82b53f61 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timoth=C3=A9e=20Mazzucotelli?= <pawamoy@pm.me>
Date: Mon, 22 May 2023 18:27:28 +0200
Subject: [PATCH] Strip tags of ToC item's aria label

Some plugins/extensions might use the data-toc-label attribute
of headings to set a particular string for the ToC item title.

While not explicitly documented as possible or allowed,
they might set some HTML code instead of text.
In this case, the aria label of Toc nav elements break the HTML
as they will contain unescaped double quotes.

To fix this, we use the `striptags` filter
to remove any tags from the aria label, keeping text only.
---
 material/partials/toc-item.html | 2 +-
 src/partials/toc-item.html      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/material/partials/toc-item.html b/material/partials/toc-item.html
index 3f0ffe463..c83972729 100644
--- a/material/partials/toc-item.html
+++ b/material/partials/toc-item.html
@@ -6,7 +6,7 @@
     {{ toc_item.title }}
   </a>
   {% if toc_item.children %}
-    <nav class="md-nav" aria-label="{{ toc_item.title }}">
+    <nav class="md-nav" aria-label="{{ toc_item.title | striptags }}">
       <ul class="md-nav__list">
         {% for toc_item in toc_item.children %}
           {% include "partials/toc-item.html" %}
diff --git a/src/partials/toc-item.html b/src/partials/toc-item.html
index 8dcf5635f..1af82c564 100644
--- a/src/partials/toc-item.html
+++ b/src/partials/toc-item.html
@@ -28,7 +28,7 @@
 
   <!-- Table of contents list -->
   {% if toc_item.children %}
-    <nav class="md-nav" aria-label="{{ toc_item.title }}">
+    <nav class="md-nav" aria-label="{{ toc_item.title | striptags }}">
       <ul class="md-nav__list">
         {% for toc_item in toc_item.children %}
           {% include "partials/toc-item.html" %}