From 78ca5469481f5a80b3a97f34482d0e744abbf948 Mon Sep 17 00:00:00 2001
From: Tom Most <twm@freecog.net>
Date: Thu, 18 Jul 2019 23:16:13 -0700
Subject: [PATCH] Sanitizer: Allow <summary>

Add tests that the sanitizer allows <details open> and <summary> and
update the implementation to allow <summary>.
---
 CHANGES.rst                      |  7 +++++++
 html5lib/filters/sanitizer.py    |  1 +
 html5lib/tests/test_sanitizer.py | 12 ++++++++++++
 3 files changed, 20 insertions(+)

diff --git a/CHANGES.rst b/CHANGES.rst
index 82605a21..e2647b8d 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,13 @@
 Change Log
 ----------
 
+1.1.0
+~~~~~
+
+Bug fixes:
+
+* The sanitizer now permits ``<summary>`` tags.
+
 1.0.1
 ~~~~~
 
diff --git a/html5lib/filters/sanitizer.py b/html5lib/filters/sanitizer.py
index e852f53b..50e3ab91 100644
--- a/html5lib/filters/sanitizer.py
+++ b/html5lib/filters/sanitizer.py
@@ -96,6 +96,7 @@
     (namespaces['html'], 'strike'),
     (namespaces['html'], 'strong'),
     (namespaces['html'], 'sub'),
+    (namespaces['html'], 'summary'),
     (namespaces['html'], 'sup'),
     (namespaces['html'], 'table'),
     (namespaces['html'], 'tbody'),
diff --git a/html5lib/tests/test_sanitizer.py b/html5lib/tests/test_sanitizer.py
index 45046d57..0346f60d 100644
--- a/html5lib/tests/test_sanitizer.py
+++ b/html5lib/tests/test_sanitizer.py
@@ -115,6 +115,18 @@ def test_sanitizer():
                """<img src="%s:%s">foo</a>""" % (protocol, rest_of_uri))
 
 
+def test_details_open_allowed():
+    sanitized = sanitize_html("<details open>.</details>")
+    expected = '<details open>.</details>'
+    assert expected == sanitized
+
+
+def test_details_summary_allowed():
+    sanitized = sanitize_html("<details><summary>.</summary><p>...</p></details>")
+    expected = '<details><summary>.</summary><p>...</p></details>'
+    assert expected == sanitized
+
+
 def test_lowercase_color_codes_in_style():
     sanitized = sanitize_html("<p style=\"border: 1px solid #a2a2a2;\"></p>")
     expected = '<p style=\"border: 1px solid #a2a2a2;\"></p>'