Bad python syntax recognition for match-case statement #7763
Description
Description
The notebook editor seems to not recognise match-case statements properly, if the condition isn't extra simple.
Of course, this means bad highlighting which is a bit disappointing, but also messes up auto-indenting which really makes editing the code difficult.
Reproduce
Make a python notebook, and add the following code (a simplified example, I encountered this with more meaningful code):
match 1:
case 1 if True==True and True:
print(1)
case 2:
passIf reproduced correctly, the case 2: part (line 4) has no highlight (make sure that the other stuff is highlighting as usual, I think I had to select a kernel? Usual notebook stuff).
In fact, the editor treats the match-case statement as ending at the first case, and inserting a newline at the beginning of it (<CR> with cursor at the end of line 2) will automatically drop the indent.
Notably, the same does not occur if line 2 is simply replaced by case 1 if True and True: or case 1 if True==True:.
The same reproduces in a fresh pyenv virtualenv, after a pip install jupyterlab (only pip and wheel in the base 3.13.3 install).
Let me know if hard to reproduce, I'll see what I can figure out to narrow stuff down.
Expected behavior
Correctly handled match-case syntax.
Context
- Operating System and version: Linux 6.17.7, Garuda Linux (arch derivative)
- Browser and version: Firefox 145.0
- Jupyter Notebook version: 7.4.4
Am using pyenv (don't think that should be an issue).
Troubleshoot Output
Yes, my $PATH is awful 😆$PATH: /home/james/.pyenv/versions/testrun/bin /home/james/.pyenv/libexec /home/james/.pyenv/plugins/python-build/bin /home/james/.pyenv/plugins/pyenv-virtualenv/bin /home/james/.pyenv/plugins/pyenv-update/bin /home/james/.pyenv/plugins/pyenv-doctor/bin /home/james/.nodenv/shims /home/james/.pyenv/shims /opt/llama-cpp/bin /home/james/.nodenv/bin /home/james/.cargo/bin /home/james/.pyenv/bin /home/james/.nodenv/shims /usr/local/sbin /usr/local/bin /usr/bin /usr/bin/site_perl /usr/bin/vendor_perl /usr/bin/core_perl /home/james/.cargo/bin /home/james/.pyenv/bin /home/james/.cargo/bin /home/james/.pyenv/binsys.path:
/home/james/.pyenv/versions/3.13.3/envs/testrun/bin
/home/james/.pyenv/versions/3.13.3/lib/python313.zip
/home/james/.pyenv/versions/3.13.3/lib/python3.13
/home/james/.pyenv/versions/3.13.3/lib/python3.13/lib-dynload
/home/james/.pyenv/versions/3.13.3/envs/testrun/lib/python3.13/site-packagessys.executable:
/home/james/.pyenv/versions/3.13.3/envs/testrun/bin/pythonsys.version:
3.13.3 (main, Nov 13 2025, 16:46:05) [GCC 15.2.1 20250813]platform.platform():
Linux-6.17.7-zen1-1-zen-x86_64-with-glibc2.42which -a jupyter:
/home/james/.pyenv/versions/testrun/bin/jupyter
/home/james/.pyenv/shims/jupyterpip list:
Package Version
------------------------- -----------
anyio 4.11.0
argon2-cffi 25.1.0
argon2-cffi-bindings 25.1.0
arrow 1.4.0
asttokens 3.0.0
async-lru 2.0.5
attrs 25.4.0
babel 2.17.0
beautifulsoup4 4.14.2
bleach 6.3.0
certifi 2025.11.12
cffi 2.0.0
charset-normalizer 3.4.4
comm 0.2.3
debugpy 1.8.17
decorator 5.2.1
defusedxml 0.7.1
executing 2.2.1
fastjsonschema 2.21.2
fqdn 1.5.1
h11 0.16.0
httpcore 1.0.9
httpx 0.28.1
idna 3.11
ipykernel 7.1.0
ipython 9.7.0
ipython_pygments_lexers 1.1.1
isoduration 20.11.0
jedi 0.19.2
Jinja2 3.1.6
json5 0.12.1
jsonpointer 3.0.0
jsonschema 4.25.1
jsonschema-specifications 2025.9.1
jupyter_client 8.6.3
jupyter_core 5.9.1
jupyter-events 0.12.0
jupyter-lsp 2.3.0
jupyter_server 2.17.0
jupyter_server_terminals 0.5.3
jupyterlab 4.4.10
jupyterlab_pygments 0.3.0
jupyterlab_server 2.28.0
lark 1.3.1
MarkupSafe 3.0.3
matplotlib-inline 0.2.1
mistune 3.1.4
nbclient 0.10.2
nbconvert 7.16.6
nbformat 5.10.4
nest-asyncio 1.6.0
notebook_shim 0.2.4
packaging 25.0
pandocfilters 1.5.1
parso 0.8.5
pexpect 4.9.0
pip 25.0.1
platformdirs 4.5.0
prometheus_client 0.23.1
prompt_toolkit 3.0.52
psutil 7.1.3
ptyprocess 0.7.0
pure_eval 0.2.3
pycparser 2.23
Pygments 2.19.2
python-dateutil 2.9.0.post0
python-json-logger 4.0.0
PyYAML 6.0.3
pyzmq 27.1.0
referencing 0.37.0
requests 2.32.5
rfc3339-validator 0.1.4
rfc3986-validator 0.1.1
rfc3987-syntax 1.1.0
rpds-py 0.28.0
Send2Trash 1.8.3
setuptools 80.9.0
six 1.17.0
sniffio 1.3.1
soupsieve 2.8
stack-data 0.6.3
terminado 0.18.1
tinycss2 1.4.0
tornado 6.5.2
traitlets 5.14.3
typing_extensions 4.15.0
tzdata 2025.2
uri-template 1.3.0
urllib3 2.5.0
wcwidth 0.2.14
webcolors 25.10.0
webencodings 0.5.1
websocket-client 1.9.0