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I've been using bash's edit-and-execute-command function:

edit-and-execute-command (C-x C-e)

Invoke an editor on the current command line, and execute the result as shell commands. Bash attempts to invoke $VISUAL, $EDITOR, and emacs as the editor, in that order.

https://www.gnu.org/software/bash/manual/html_node/Miscellaneous-Commands.html

I've noticed that if I invoke an editor, use Ctrl-Z to put it into the background, and then use fg to put it back into the foreground, the shell no longer executes the temporary file.

This is handy if I want to abort the command, but I found the behavior a little surprising the first time it happened.

My questions:

  • Why does this happen?

    I know from the source code that edit_and_execute_command eventually calls fc, but it's not immediately clear to me why sending SIGTSTP prevents bash from executing the temporary file.

  • If I had accidentally hit Ctrl-Z and still wanted to execute the script in the temporary file still open by the editor, what would be the best way of doing that?

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