markdown.extensions.md_in_html fails with TypeError: expected string or bytes-like object #1040
Description
I'm running into an issue with "simple" Markdown + HTML examples crashing with a TypeError. For example, the following throws a TypeError: expected string or bytes-like object exception:
markdown.markdown(
'Hello\n<div markdown="1"></div>',
extensions=["markdown.extensions.md_in_html"],
)Versions: Markdown==3.3.1, CPython 3.8.6
I haven't had time yet to investigate this further, but I wanted to get an issue opened with some failing test cases in case others are running into this as well. I suspect this has something to do with the raw HTML parser rewrite in #803.
Steps to reproduce:
Save the following as mderror.py:
import traceback
import markdown
def try_render(text):
print(f"\n\n---- Rendering: {text!r}")
try:
html = markdown.markdown(
text, extensions=["markdown.extensions.md_in_html"],
)
print(f"---- PASS: {html!r}")
except Exception as e:
print("---- FAILED")
traceback.print_exc()
try_render('Hello<div markdown="1"></div>') # Error
try_render('Hello\n<div markdown="1"></div>') # Error
try_render('Hello\n\n<div markdown="1"></div>') # OkayResult:
$ python mderror.py
---- Rendering: 'Hello<div markdown="1"></div>'
<Element 'div' at 0x110758310>
---- FAILED
Traceback (most recent call last):
File "mderror.py", line 8, in try_render
html = markdown.markdown(
File "PROJECT_ROOT/venv/lib/python3.8/site-packages/markdown/core.py", line 386, in markdown
return md.convert(text)
File "PROJECT_ROOT/venv/lib/python3.8/site-packages/markdown/core.py", line 290, in convert
output = pp.run(output)
File "PROJECT_ROOT/venv/lib/python3.8/site-packages/markdown/postprocessors.py", line 73, in run
if self.isblocklevel(html):
File "PROJECT_ROOT/venv/lib/python3.8/site-packages/markdown/postprocessors.py", line 94, in isblocklevel
m = re.match(r"^\<\/?([^ >]+)", html)
File "/Users/dbader/.pyenv/versions/3.8.6/lib/python3.8/re.py", line 191, in match
return _compile(pattern, flags).match(string)
TypeError: expected string or bytes-like object
---- Rendering: 'Hello\n<div markdown="1"></div>'
<Element 'div' at 0x110758900>
---- FAILED
Traceback (most recent call last):
File "mderror.py", line 8, in try_render
html = markdown.markdown(
File "PROJECT_ROOT/venv/lib/python3.8/site-packages/markdown/core.py", line 386, in markdown
return md.convert(text)
File "PROJECT_ROOT/venv/lib/python3.8/site-packages/markdown/core.py", line 290, in convert
output = pp.run(output)
File "PROJECT_ROOT/venv/lib/python3.8/site-packages/markdown/postprocessors.py", line 73, in run
if self.isblocklevel(html):
File "PROJECT_ROOT/venv/lib/python3.8/site-packages/markdown/postprocessors.py", line 94, in isblocklevel
m = re.match(r"^\<\/?([^ >]+)", html)
File "/Users/dbader/.pyenv/versions/3.8.6/lib/python3.8/re.py", line 191, in match
return _compile(pattern, flags).match(string)
TypeError: expected string or bytes-like object
---- Rendering: 'Hello\n\n<div markdown="1"></div>'
---- PASS: '<p>Hello</p>\n<div></div>'