Shell command requiring input blocks the cell

[astrojuanlu]

Description

(This comes from https://github.com/ipython/ipython/issues/10499 - I'm not sure if there's an issue tracking this problem on JupyterLab or classic Notebook, tried looking for stdin and scan the titles but didn't find anything)

Any shell command (prefixed by !) requiring input (stdin) blocks the cell.

IPython:

JupyterLab:

Reproduce

1. Type !(echo "type something"; read foo; echo $foo) in a cell (or any other shell command prompting the user for input)
2. Run cell
3. Observe that it gets blocked

Expected behavior

I can think of two options:

• There's a text box where I can type input.
• The command immediately fails (similar to what happens when one tries to run such command on a non-TTY shell)

Context

• Operating System and version: tested this on several operating systems, currently on macOS Ventura 13.2.1
• Browser and version: Firefox 110.0
• JupyterLab version: 3.6.1

[krassowski]

I can reproduce this on both 3.x and 4.0.0a34

There's a text box where I can type input.

This is what I would expect too.

Somewhat related to https://github.com/jupyterlab/jupyterlab/issues/8632 and https://github.com/jupyterlab/jupyterlab/pull/8713.