Variable: time-stamp-conversion-warn
time-stamp-conversion-warn is a variable defined in time-stamp.el.gz.
Value
t
Documentation
Enable warnings for old formats in time-stamp-format.
When non-nil, time-stamp warns about unstable and
soon-to-be-changing conversions found in that buffer's
time-stamp-format value. The warning is displayed only
when a buffer's time-stamp is updated; merely viewing a file
does not warn.
If nil, these warnings are disabled, which would be a bad idea. Since you are changing your file anyway, please make one more change and update its local variables list.
The recommended replacements will work with old versions of Emacs.
New formats are being recommended now to allow time-stamp-format
to change in the future to be compatible with format-time-string.
The new formats being recommended now will continue to work then.
Source Code
;; Defined in /usr/src/emacs/lisp/time-stamp.el.gz
(defvar time-stamp-conversion-warn t
"Enable warnings for old formats in `time-stamp-format'.
When non-nil, `time-stamp' warns about unstable and
soon-to-be-changing conversions found in that buffer's
`time-stamp-format' value. The warning is displayed only
when a buffer's time-stamp is updated; merely viewing a file
does not warn.
If nil, these warnings are disabled, which would be a bad idea.
Since you are changing your file anyway, please make one more
change and update its local variables list.
The recommended replacements will work with old versions of Emacs.
New formats are being recommended now to allow `time-stamp-format'
to change in the future to be compatible with `format-time-string'.
The new formats being recommended now will continue to work then.")