Variable: add-log-time-format
add-log-time-format is a customizable variable defined in
add-log.el.gz.
Value
add-log-iso8601-time-string
Documentation
Function that defines the time format.
For example, add-log-iso8601-time-string, which gives the
date in international ISO 8601 format,
and current-time-string are two valid values.
Source Code
;; Defined in /usr/src/emacs/lisp/vc/add-log.el.gz
(defcustom add-log-time-format 'add-log-iso8601-time-string
"Function that defines the time format.
For example, `add-log-iso8601-time-string', which gives the
date in international ISO 8601 format,
and `current-time-string' are two valid values."
:type '(radio (const :tag "International ISO 8601 format"
add-log-iso8601-time-string)
(const :tag "Old format, as returned by `current-time-string'"
current-time-string)
(function :tag "Other")))