Masking Env-Prompts

[max06]

I use interactive env var prompts quite often in my notebooks, for example

export ART_USER=Your mail address
export ART_TOKEN=Your identity token you just created
...

When using these notebooks in shared environments (like a zoom call with colleagues), it would be great to have secrets not shown while entering them.

I'm aware, extending the syntax to add such options wouldn't be very easy without breaking shell compatibility. To solve this, I'd suggest masking input if the variable name (or the provided placeholder) point to a potential secret. See the example above, TOKEN should indicate a possible secret.