These new pulse functions allow pulse any defined face briefly.
The new file contains functions intended to be used in
`ring-bell-function' as alternatives to `visible-bell'.
* lisp/pulse.el (pulse-face-duration): New user option.
(pulse-flash-face): New function.
* lisp/ring-bell-fns.el (flash-face-attributes)
(flash-face-faces): New user options.
(flash-face-bell-function, flash-echo-area-bell-function):
New functions. (bug#77715)
* etc/NEWS: Announce changes
