The question is tagged
zsh. zsh does not use .bashrc. In interactive zsh your command results in can't trap SIGSTP in interactive shells. In interactive bash the command itself "works", but since interactive bash with job control enabled runs things in separate process groups, SIGTSTP that gets to a job does not get to the shell. One needs a second Ctrl+z to activate the trap. So this is not "in one keypress" even in bash.
