Infinite loop in amsmath extension for a simple input #117
Description
Describe the bug
context
The following markdown document, bug.md is a minimal version reproducing the issue (taken from a larger document):
---
myst:
enable_extensions: ["amsmath"]
---
> **Example**
>\begin{equation}A=
\begin{matrix}
-0.707 & 0.408 & 0.577 \\
-0.707 & -0.408 & -0.577 \\
-0. & -0.816 & 0.577
\end{matrix}
\end{equation}(This renders properly in a markdown cell in Jupyter Lab.)
I try to convert it to HTML as follows:
myst-docutils-demo bug.mdexpectation
To get some HTML output.
bug
The script hangs without error message, until I interrupt it with ctrl+C:
Traceback (most recent call last):
File "~/venv/bin/myst-docutils-demo", line 8, in <module>
sys.exit(cli_html5_demo())
^^^^^^^^^^^^^^^^
File "~/venv/lib64/python3.11/site-packages/myst_parser/parsers/docutils_.py", line 379, in cli_html5_demo
publish_cmdline(
File "~/venv/lib64/python3.11/site-packages/docutils/core.py", line 402, in publish_cmdline
output = publisher.publish(
^^^^^^^^^^^^^^^^^^
File "~/venv/lib64/python3.11/site-packages/docutils/core.py", line 234, in publish
self.document = self.reader.read(self.source, self.parser,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "~/venv/lib64/python3.11/site-packages/docutils/readers/__init__.py", line 70, in read
self.parse()
File "~/venv/lib64/python3.11/site-packages/docutils/readers/__init__.py", line 76, in parse
self.parser.parse(self.input, document)
File "~/venv/lib64/python3.11/site-packages/myst_parser/parsers/docutils_.py", line 318, in parse
parser.render(inputstring)
File "~/venv/lib64/python3.11/site-packages/markdown_it/main.py", line 291, in render
return self.renderer.render(self.parse(src, env), self.options, env)
^^^^^^^^^^^^^^^^^^^^
File "~/venv/lib64/python3.11/site-packages/markdown_it/main.py", line 276, in parse
self.core.process(state)
File "~/venv/lib64/python3.11/site-packages/markdown_it/parser_core.py", line 45, in process
rule(state)
File "~/venv/lib64/python3.11/site-packages/markdown_it/rules_core/block.py", line 13, in block
state.md.block.parse(state.src, state.md, state.env, state.tokens)
File "~/venv/lib64/python3.11/site-packages/markdown_it/parser_block.py", line 110, in parse
self.tokenize(state, state.line, state.lineMax)
File "~/venv/lib64/python3.11/site-packages/markdown_it/parser_block.py", line 85, in tokenize
if rule(state, line, endLine, False):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "~/venv/lib64/python3.11/site-packages/markdown_it/rules_block/blockquote.py", line 280, in blockquote
state.md.block.tokenize(state, startLine, nextLine)
File "~/venv/lib64/python3.11/site-packages/markdown_it/parser_block.py", line 85, in tokenize
if rule(state, line, endLine, False):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "~/venv/lib64/python3.11/site-packages/markdown_it/rules_block/fence.py", line 16, in fence
if state.is_code_block(startLine):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "~/venv/lib64/python3.11/site-packages/markdown_it/rules_block/state_block.py", line 257, in is_code_block
def is_code_block(self, line: int) -> bool:
KeyboardInterruptproblem
I ran into a problem when trying to build a PDF document from several notebooks that have been created by several authors. This is fairly common pattern, and Jupyter can handle it, so it seems fair to expect that this should work.
Reproduce the bug
The context above contains all the steps to reproduce the problem.
List your environment
The command jupyter-book --version gives the following error:
usage: jupyter-book [-h] command
jupyter-book: error: the following arguments are required: command
jupyter-book --version gives:
Running Jupyter Book version: 0.6.5
Output of pip list:
Package Version
--------------------------------- ------------------
alabaster 0.7.14
anyio 4.3.0
appdirs 1.4.4
argon2-cffi 23.1.0
argon2-cffi-bindings 21.2.0
arrow 1.3.0
asn1crypto 1.5.1
astropy 6.1.3
astropy-iers-data 0.2024.9.2.0.33.23
asttokens 2.4.1
async-lru 2.0.4
atomicwrites 1.4.1
attrs 23.1.0
babel 2.16.0
backcall 0.2.0
backports.entry-points-selectable 1.2.0
backports.functools-lru-cache 1.6.6
beautifulsoup4 4.12.2
beniget 0.4.1
binaryornot 0.4.4
bitarray 2.8.2
bitstring 4.1.2
bleach 6.1.0
Bottleneck 1.3.7
build 1.2.1
CacheControl 0.13.1
cachy 0.3.0
certifi 2024.8.30
cffi 1.16.0
cfgv 3.4.0
chardet 5.2.0
charset-normalizer 3.3.2
cleo 2.0.1
click 8.1.7
cloudpickle 3.0.0
colorama 0.4.6
comm 0.2.2
commonmark 0.9.1
contourpy 1.2.0
cookiecutter 2.6.0
crashtest 0.4.1
cryptography 41.0.5
cycler 0.12.1
Cython 3.0.4
deap 1.4.1
debugpy 1.8.1
decorator 5.1.1
defusedxml 0.7.1
deprecation 2.1.0
distlib 0.3.7
distro 1.8.0
docopt 0.6.2
docutils 0.21.2
doit 0.36.0
dulwich 0.21.6
ecdsa 0.18.0
editables 0.5
exceptiongroup 1.1.3
execnet 2.0.2
executing 2.0.1
fastjsonschema 2.19.1
filelock 3.13.0
flit_core 3.9.0
fonttools 4.47.0
fqdn 1.5.1
fsspec 2023.10.0
furo 2024.8.6
future 0.18.3
gast 0.5.4
glob2 0.7
gmpy2 2.1.5
greenlet 3.0.3
h11 0.14.0
html5lib 1.1
httpcore 1.0.5
httpx 0.27.0
hypothesis 6.90.0
identify 2.6.0
idna 3.8
imagesize 1.4.1
importlib-metadata 6.8.0
importlib-resources 6.1.0
iniconfig 2.0.0
intersphinx_registry 0.2408.13
intervaltree 3.1.0
intreehooks 1.0
ipaddress 1.0.23
ipykernel 6.29.4
ipympl 0.9.4
ipytest 0.14.2
ipython 8.17.2
ipython-genutils 0.2.0
ipywidgets 8.1.2
isoduration 20.11.0
jaraco.classes 3.3.0
jax 0.4.31
jaxlib 0.4.31
jedi 0.19.1
jeepney 0.8.0
Jinja2 3.1.4
joblib 1.3.2
json5 0.9.25
jsonpointer 3.0.0
jsonschema 4.18.0
jsonschema-specifications 2023.12.1
jupyter-book 0.6.5
jupyter-cache 1.0.0
jupyter_client 8.6.1
jupyter_core 5.7.2
jupyter-events 0.10.0
jupyter-lsp 2.2.5
jupyter_packaging 0.12.3
jupyter_server 2.14.0
jupyter_server_terminals 0.5.3
jupyterlab 4.2.0
jupyterlab_pygments 0.3.0
jupyterlab_server 2.27.1
jupyterlab_widgets 3.0.10
jupytext 1.16.4
keyring 24.2.0
keyrings.alt 5.0.0
kiwisolver 1.4.4
latexcodec 3.0.0
liac-arff 2.5.0
libsass 0.23.0
lockfile 0.12.2
lxml 4.9.3
markdown-it-py 3.0.0
MarkupSafe 2.1.5
matplotlib 3.8.2
matplotlib-inline 0.1.6
mdit-py-plugins 0.4.1
mdurl 0.1.2
mistune 3.0.2
ml-dtypes 0.4.0
mock 5.1.0
more-itertools 10.1.0
mpmath 1.3.0
msgpack 1.0.7
myst-nb 1.1.1
myst-parser 4.0.0
nbclient 0.10.0
nbconvert 7.16.4
nbformat 5.10.4
nest-asyncio 1.6.0
netaddr 0.9.0
netifaces 0.11.0
nodeenv 1.9.1
notebook_shim 0.2.4
numexpr 2.8.7
numpy 1.26.2
numpydoc 1.8.0
opt-einsum 3.3.0
overrides 7.7.0
packaging 24.1
pandas 2.1.3
pandocfilters 1.5.1
parso 0.8.3
pastel 0.2.1
pathlib2 2.3.7.post1
pathspec 0.11.2
pbr 5.11.1
pexpect 4.8.0
pickleshare 0.7.5
pillow 10.2.0
pip 23.3.2
pip-tools 7.4.1
pkginfo 1.9.6
platformdirs 3.11.0
pluggy 1.3.0
ply 3.11
pooch 1.8.0
pre-commit 3.8.0
prometheus_client 0.20.0
prompt-toolkit 3.0.41
psutil 5.9.6
ptyprocess 0.7.0
pure-eval 0.2.2
py 1.11.0
py-expression-eval 0.3.14
pyasn1 0.5.0
pybind11 2.11.1
pybtex 0.24.0
pybtex-docutils 1.0.3
pycparser 2.21
pycryptodome 3.19.0
pydevtool 0.3.0
pyerfa 2.0.1.4
Pygments 2.18.0
pylev 1.4.0
PyNaCl 1.5.0
pyparsing 3.1.1
pyproject_hooks 1.1.0
pyrsistent 0.20.0
pytest 7.4.3
pytest-xdist 3.3.1
python-dateutil 2.8.2
python-json-logger 2.0.7
python-slugify 8.0.4
pythran 0.14.0
pytoml 0.1.21
pytz 2023.3.post1
PyYAML 6.0.1
pyzmq 25.1.2
rapidfuzz 2.15.2
referencing 0.35.1
regex 2023.10.3
requests 2.32.3
requests-toolbelt 1.0.0
rfc3339-validator 0.1.4
rfc3986-validator 0.1.1
rich 13.6.0
rich-click 1.7.0
rpds-py 0.18.1
ruamel.yaml 0.18.6
ruamel.yaml.clib 0.2.8
ruff 0.6.3
scandir 1.10.0
schemdraw 0.19
scipy 1.11.4
SecretStorage 3.3.3
semantic-version 2.10.0
Send2Trash 1.8.3
setuptools 74.1.2
setuptools-scm 8.0.4
shellingham 1.5.4
simplegeneric 0.8.1
simplejson 3.19.2
six 1.16.0
sniffio 1.3.1
snowballstemmer 2.2.0
sortedcontainers 2.4.0
soupsieve 2.5
Sphinx 8.0.2
sphinx-autobuild 2024.9.3
sphinx-basic-ng 1.0.0b2
sphinx-bootstrap-theme 0.8.1
sphinx-codeautolink 0.15.2
sphinx-copybutton 0.5.2
sphinxcontrib-applehelp 2.0.0
sphinxcontrib-bibtex 2.6.2
sphinxcontrib-devhelp 2.0.0
sphinxcontrib-htmlhelp 2.1.0
sphinxcontrib-jsmath 1.0.1
sphinxcontrib-qthelp 2.0.0
sphinxcontrib-serializinghtml 2.0.0
sphinxcontrib-svg2pdfconverter 1.2.2
sphinxcontrib-websupport 2.0.0
SQLAlchemy 2.0.34
stack-data 0.6.3
starlette 0.38.4
sympy 1.12
tabulate 0.9.0
terminado 0.18.1
text-unidecode 1.3
threadpoolctl 3.2.0
tinycss2 1.3.0
toml 0.10.2
tomli 2.0.1
tomli_w 1.0.0
tomlkit 0.12.1
tornado 6.4
tqdm 4.66.5
traitlets 5.13.0
types-python-dateutil 2.9.0.20240906
typing_extensions 4.8.0
tzdata 2023.3
ujson 5.8.0
uri-template 1.3.0
urllib3 2.2.2
uvicorn 0.30.6
versioneer 0.29
virtualenv 20.24.6
watchfiles 0.24.0
wcwidth 0.2.8
webcolors 24.8.0
webencodings 0.5.1
websocket-client 1.8.0
websockets 13.0.1
wheel 0.41.2
widgetsnbextension 4.0.10
xlrd 2.0.1
zipfile36 0.1.3
zipp 3.17.0