`jupyterlab-git` incorrectly responds to filebowser events of other extensions

[jhgoebbert]

When using a JupyterLab extension like jupyterlab-gitlab (https://gitlab.com/beenje/jupyterlab-gitlab/-/tree/jupyterlab-3)
which inherits from the JupyterLab file browser class,
then jupyterlab-git seems to be mistakenly notified of that file browser events.

Output from webbrowser's console:

Fail to find Git top level for path GitLab:jupyter4jsc/j4j_notebooks.
Error: Traceback (most recent call last):
  File "/lib/python3.8/site-packages/jupyterlab_git/git.py", line 144, in execute
    code, output, error = await current_loop.run_in_executor(
  File "/lib/python3.8/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/lib/python3.8/site-packages/jupyterlab_git/git.py", line 110, in call_subprocess
    process = subprocess.Popen(
  File "/lib/python3.8/subprocess.py", line 854, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/lib/python3.8/subprocess.py", line 1702, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: '/home/goebbert1/gitlab:/jupyter4jsc/j4j_notebooks'

[fcollonval]

Thanks for reporting the bug @jhgoebbert

Could you provide the version of the extension you are using? There has been some recent changes regarding tracking the filebrowser in #1004 and #1009 that may trigger or solve this depending on the version you are using.

[jhgoebbert]

Hi @fcollonval,
thank you for your reply.

Our current setup includes:

• JupyterLab 3.1.6
• jupyterlab-git 0.32.1
• jupyterlab-gitlab, branch jupyterlab-3 (very close to jupyterlab-github)

[fcollonval]

I'm looking into it. And I can confirm from the implementation of those extensions that #1004 and #1009 are to blame. I'm reverting them as soon as I can confirm (test) it works with jupyterlab-gitlab.

[fcollonval]

@jhgoebbert a release a patched version (0.32.2). Would you mind checking it works for you?

[jhgoebbert]

Great. Yes, the error is gone!
Thanks a lot for fixing this. The jupyterlab-git extension is one of the most important once in our installation.