Variable: revert-without-query
revert-without-query is a customizable variable defined in
files.el.gz.
Value
nil
Documentation
Specify which files should be reverted without query.
The value is a list of regular expressions.
If the file name matches one of these regular expressions,
then revert-buffer reverts the file without querying
if the file has changed on disk and you have not edited the buffer.
Probably introduced at or before Emacs version 20.1.
Source Code
;; Defined in /usr/src/emacs/lisp/files.el.gz
(defcustom revert-without-query nil
"Specify which files should be reverted without query.
The value is a list of regular expressions.
If the file name matches one of these regular expressions,
then `revert-buffer' reverts the file without querying
if the file has changed on disk and you have not edited the buffer."
:type '(repeat regexp)
:group 'find-file)