Feature Request: Supervisor-esque way to foreground a background process

[knpwrs]

Feature Request

Use Case:

We currently use https://github.com/Supervisor/supervisor for our process composition in our nix-powered development setup. A common workflow for us is to stick a byebug statement in our rails app, foreground the running process with supervisorctl fg rails, and interact with the shell presented by byebug. Pressening ctrl-c backgrounds the process again.

Proposed Change:

Allow a background process to be foregrounded, and then backgrounded again (ctrl-c).

Who Benefits From The Change(s)?

Anyone who needs to interact with a process that is running in the background.

Alternative Approaches