Variable: add-log-buffer-file-name-function
add-log-buffer-file-name-function is a variable defined in
add-log.el.gz.
Value
buffer-file-name
Documentation
If non-nil, function to call to identify the full filename of a buffer.
This function is called with no argument. The default is to
use buffer-file-name(var)/buffer-file-name(fun).
Source Code
;; Defined in /usr/src/emacs/lisp/vc/add-log.el.gz
(defvar add-log-buffer-file-name-function 'buffer-file-name
"If non-nil, function to call to identify the full filename of a buffer.
This function is called with no argument. The default is to
use `buffer-file-name'.")