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Emacs 26.1 added the confirm-kill-processes variable. To disable conformation to kill processes on Emacs exit, add to your init file: (setq confirm-kill-processes nil) Documentation: Non-nil if Emacs should confirm killing processes on exit. If this variable is nil, the value of process-query-on-exit-flag is ignored. Otherwise, if there are processes ...


Elisp relies on cooperative concurrency, so yes, these are "atomic". But I suspect, like Tobias, that this answer won't help you very much because you're probably not asking the right question.

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