Not clear when bash cell output waiting for input

[jlewi]

Suppose you execute some command that prompts for user input; e.g. a standard confirmation "y/n" before proceeding. This is no longer clear in the cell output cell.

The cell output still looks to be waiting for input.
We should create a suitable test case.
A simple python or bash script that prompts for user input might be a good one. We could compare what we see inside runme to what we see inside the terminal to try to reproduce the issue.

[jlewi]

It looks like we may be dropping the command that indicates we are waiting for user input; maybe because we don't flush a buffer. For example when I was running gcloud init I think it was trying to run something using sudo and needed to prompt me for my password. I should have seen

Xcode Command Line Tools is already installed.
Password:

But I didn't see Password: so it wasn't clear that we were waiting for input

[jlewi]

Should be fixed by #207

[jlewi-openai]

Cleanup review: the inline-input visibility problem is not fully shipped. #207 added stdin UX design documentation, while open #103 flushes partial stdout prompts and adds a browser fixture. Keeping this issue open until the implementation lands and an interactive prompt CUJ verifies the behavior.