Description

possibly related to#6914

getting a 404 error when using theOpen with →Notebook menu on a jupytext notebook

this capture was made when running

jupyter lab --NotebookApp.base_url=/jlab4-nb7-text/

the 2 first first attempts work fine:

• on a ipynb,Open with →Notebook
• on a jupytext,Open with →Jupytext Notebook

the video may not be super clear but in both these cases the new tab's URL contains the base_url

BUT

• on a jupytext,Open with →Notebook ends up on a 404 because the base_url thingy was not inserted in the URL

Reproduce

see above; this is with

pip freeze | egrep 'jupyte|notebook'jupyter-events==0.6.3jupyter-lsp==2.2.0jupyter_client==8.2.0jupyter_core==5.3.1jupyter_server==2.6.0jupyter_server_terminals==0.4.4jupyterlab==4.0.2jupyterlab-pygments==0.2.2jupyterlab-widgets==3.0.7jupyterlab_jupytext @ git+https://github.com/mwouts/jupyterlab-jupytext.git@d451f5c6fddc958bd3b7082720a7627aa4681fbdjupyterlab_server==2.23.0jupytext==1.14.6notebook==7.0.0rc1notebook_shim==0.2.3

Context

[W 2023-06-22 12:55:39.037 ServerApp] 404 GET /edit/tests/sample-jupytext.md?factory=Notebook (cddb81bae87041cc81171cb9a9812c73@::1) 1.64ms referer=http://localhost:8891/jlab4-nb7-text/tree/tests