Make function silent if file is modified.
https://emacs.stackexchange.com/questions/36367/disable-conformation-when-erasing-saving-buffer
;; -*- mode: emacs-lisp -*-
(
("from"
("Oleksandr Gavenko" 200 nil s)
("gavenkoa" 200 nil s)
("Юрий Гавенко" 200 nil s)
("singalen" 100 nil s)
("Victor Sergienko" 200 nil s)
;; Spammers, haters.
("sthu.deus@openmailbox.org" -1000 nil s))
("message-id"
("@gavenkoa.example.com" 200 nil s))
("references"
("@gavenkoa.example.com" 100 nil s)
("@desktop.home.int" 100 nil s))
(mark-and-expunge -20)
(thread-mark-and-expunge -20)
)