From 959561879693bf4a576f99c6733b50b01186aa08 Mon Sep 17 00:00:00 2001
From: AlexVonB <AlexVonB@users.noreply.github.com>
Date: Sun, 24 Nov 2024 21:11:42 +0100
Subject: [PATCH 1/3] prevent very large headline prefixes

for example: `<h9999999>` could crash the conversion.

fixes #143
---
 markdownify/__init__.py   | 3 +++
 tests/test_conversions.py | 1 +
 2 files changed, 4 insertions(+)

diff --git a/markdownify/__init__.py b/markdownify/__init__.py
index cc3d153..c34e57e 100644
--- a/markdownify/__init__.py
+++ b/markdownify/__init__.py
@@ -315,6 +315,9 @@ def convert_hn(self, n, el, text, convert_as_inline):
         if convert_as_inline:
             return text
 
+        # prevent MemoryErrors in case of very large n
+        n = max(1, min(6, n))
+
         style = self.options['heading_style'].lower()
         text = text.strip()
         if style == UNDERLINED and n <= 2:
diff --git a/tests/test_conversions.py b/tests/test_conversions.py
index 0be1d0c..1c5f9c2 100644
--- a/tests/test_conversions.py
+++ b/tests/test_conversions.py
@@ -133,6 +133,7 @@ def test_hn():
     assert md('<h4>Hello</h4>') == '\n#### Hello\n\n'
     assert md('<h5>Hello</h5>') == '\n##### Hello\n\n'
     assert md('<h6>Hello</h6>') == '\n###### Hello\n\n'
+    assert md('<h10>Hello</h10>') == md('<h6>Hello</h6>')
 
 
 def test_hn_chained():

From 3466061ca9d33afd06532e2e79b418b8e478d66b Mon Sep 17 00:00:00 2001
From: AlexVonB <AlexVonB@users.noreply.github.com>
Date: Sun, 24 Nov 2024 21:20:57 +0100
Subject: [PATCH 2/3] prevent `<hn>` to call convert_hn and crash

fixes #142
---
 markdownify/__init__.py   | 5 +++--
 tests/test_conversions.py | 1 +
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/markdownify/__init__.py b/markdownify/__init__.py
index c34e57e..3272ce5 100644
--- a/markdownify/__init__.py
+++ b/markdownify/__init__.py
@@ -213,7 +213,7 @@ def __getattr__(self, attr):
             n = int(m.group(1))
 
             def convert_tag(el, text, convert_as_inline):
-                return self.convert_hn(n, el, text, convert_as_inline)
+                return self._convert_hn(n, el, text, convert_as_inline)
 
             convert_tag.__name__ = 'convert_h%s' % n
             setattr(self, convert_tag.__name__, convert_tag)
@@ -311,7 +311,8 @@ def convert_code(self, el, text, convert_as_inline):
 
     convert_kbd = convert_code
 
-    def convert_hn(self, n, el, text, convert_as_inline):
+    def _convert_hn(self, n, el, text, convert_as_inline):
+        """ Method name prefixed with _ to prevent <hn> to call this """
         if convert_as_inline:
             return text
 
diff --git a/tests/test_conversions.py b/tests/test_conversions.py
index 1c5f9c2..2283c29 100644
--- a/tests/test_conversions.py
+++ b/tests/test_conversions.py
@@ -134,6 +134,7 @@ def test_hn():
     assert md('<h5>Hello</h5>') == '\n##### Hello\n\n'
     assert md('<h6>Hello</h6>') == '\n###### Hello\n\n'
     assert md('<h10>Hello</h10>') == md('<h6>Hello</h6>')
+    assert md('<hn>Hello</hn>') == md('Hello')
 
 
 def test_hn_chained():

From 6258f5c38b97ab443b4ddf03e6676ce29b392d06 Mon Sep 17 00:00:00 2001
From: AlexVonB <AlexVonB@users.noreply.github.com>
Date: Sun, 24 Nov 2024 23:05:02 +0100
Subject: [PATCH 3/3] bump to version v0.14.1

---
 pyproject.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pyproject.toml b/pyproject.toml
index 51604d8..e5ce8cb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "markdownify"
-version = "0.14.0"
+version = "0.14.1"
 authors = [{name = "Matthew Tretter", email = "m@tthewwithanm.com"}]
 description = "Convert HTML to markdown."
 readme = "README.rst"