Combined URL (workspaces + tree) does not work as intended

[kavishdahekar]

Description

According to the documentation on urls : workspaces and tree can be used together in a URL.

So, when I hit the url :-

http://localhost:8888/lab/workspaces/foo/tree/path/to/notebook.ipynb

I am expecting the workspace foo to be opened/created and the file notebook.ipynb should be opened in a tab inside jupyter lab.
This does not happen. Jupyter lab just reinstates the previous state of the workspace or if the workspace did not exist then creates it. It seems the tree part is completely ignored.

Reproduce

1. Start jupyter lab in any directory.
2. Directly navigate to http(s)://<server:port>/lab/workspaces/foo/tree/path/to/notebook.ipynb

Expected behavior

Jupyter Lab should open the notebook.ipynb file (in the workspace foo) which is present at path/to/notebook.ipynb.

Actual behavior

Jupyter Lab does not open the notebook.ipynb file. The tree part of the url seems to be ignored.

Context

• Operating System and version: Win10 64bit
• Browser and version: Chrome 76
• JupyterLab version: 1.0.2, 1.0.9, 1.1.1

Note: expected behavior was observed on jupyter lab version 0.35.4 .

Troubleshoot Output

n/a

Command Line Output

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Browser Output

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