Unable to hyperlink to current folder

[raymondw2]

Description

In a markdown cell, whenever we attempt to hyperlink [current directory](./) to show the contents of the current directory like this:

I get this error:

Reproduce

1. Go to a markdown cell
2. Type in [current directory](./)
3. Click on link

Expected behavior

The hyperlink should display:

the contents of the current directory.

Context

• Operating System and version:
• Browser and version:
• JupyterLab version:

Troubleshoot Output

Paste the output from running `jupyter troubleshoot` from the command line here.
You may want to sanitize the paths in the output.

Command Line Output

Paste the output from your command line running `jupyter lab` here, use `--debug` if possible.

Browser Output

Paste the output from your browser Javascript console here, if applicable.

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[jtpio]

Checking the behavior with the latest Notebook 7 pre-release (currently 7.0.0a13).

Linking to the current directory does not show the error dialog anymore, but it also doesn't open the folder in a new browser tab:

hyperlink-current-dir.mp4

Linking to another directory tries to open the directory under /edit:

hyperlink-other-dir.mp4

[jtpio]

Digging a bit into this, JupyterLab handles local links via the CommandLinker in this plugin:

https://github.com/jupyterlab/jupyterlab/blob/eeaa6505f658f7eaaad18ea2d7f15c3c5da0b23a/packages/rendermime-extension/src/index.ts#L66-L90

[](./) is treated as "path": "" which then does nothing because of this check: https://github.com/jupyterlab/jupyterlab/blob/eeaa6505f658f7eaaad18ea2d7f15c3c5da0b23a/packages/rendermime-extension/src/index.ts#L71

[](./folder) then tries to open folder via the document manager