Kernel interruption, SIGINT, and child processes

[jhrmnn]

When interrupting a Python kernel in a notebook (Notebook: Interrupt), its child processes (for example those launched via subprocess) don't receive the SIGINT. This is different from how the official Jupyter Notebook does it or how most common shells do it upon CTRL+C, which sends the SIGINT to child processes as well. Is this different behavior intended or is it an omission?