with-mh-folder-updating

with-mh-folder-updating is an autoloaded Lisp macro in `mh-acros.el'.

(with-mh-folder-updating SAVE-MODIFICATION-FLAG &rest BODY)

Format is (with-mh-folder-updating (SAVE-MODIFICATION-FLAG) &body BODY).
Execute BODY, which can modify the folder buffer without having to
worry about file locking or the read-only flag, and return its result.
If SAVE-MODIFICATION-FLAG is non-nil, the buffer's modification flag
is unchanged, otherwise it is cleared.