[Help-bash] Automatically "disown -h" all background jobs

[R. Diez]

Hi all:

It happens to me all the time: I start a background GUI job with &, like 
"git gui &", I then close the terminal window with the mouse, and the 
GUI job is gone with it. However, quitting with "exit" leaves background 
jobs running fine. At least that is the default behaviour in many distros.

I know about SIGHUP, nohup, huponexit, disown, etc. But they do not 
really help, or I just cannot remember to use the right one every time. 
It's annoying.

I am not the only one who has noticed:

https://unix.stackexchange.com/questions/284673/automatically-disown-application-when-running-it-from-a-terminal

But the proposed solution would mean having to remember something new, 
and my muscle memory strongly disagrees.

What I need is a new option in Bash to stop forwarding SIGHUP to 
background jobs. The foreground job should still get it though.

I tried trapping SIGHUP for a while in .bashrc , but that left 
foreground processes like "less </dev/null" running in the background 
when I forcibly closed the Emacs multi-term frame Bash and 'less' were 
running in. So completely blocking SIGHUP is not a good solution for all 
situations.

I am using PROMPT_COMMAND="disown -a -h" at the moment, but this trick 
is not elegant enough for me. 8-)

Regards,
  rdiez