revert-buffer--default
revert-buffer--default is a compiled Lisp function in `files.el
'.
(revert-buffer--default IGNORE-AUTO NOCONFIRM)
Default function for `revert-buffer'.
The arguments IGNORE-AUTO and NOCONFIRM are as described for `revert-buffer'.
Runs the hooks `before-revert-hook' and `after-revert-hook' at the
start and end.
Calls `revert-buffer-insert-file-contents-function' to reread the
contents of the visited file, with two arguments: the first is the file
name, the second is non-nil if reading an auto-save file.
This function only handles buffers that are visiting files.
Non-file buffers need a custom function.