Re: [Emacs-diffs] master dfed333: Remove fixnum restriction on some display vars

[Paul Eggert]

On 5/24/19 7:32 AM, Stefan Monnier wrote:
> My comment was specifically about buffer-display-count (which counts
> a number of distinct heap objects).

Actually it counts the number of times a buffer has been displayed in 
the past.

Plus, if I execute (setq buffer-display-count most-positive-fixnum) and 
then display the buffer in a new window, I wouldn't want Emacs to crash 
(or to convey the existence of a supernatural power :-) simply because 
the counter was incremented.

While we're on the topic, how about if we deprecate/obsolete 
buffer-display-count? As far as I can tell it's never been used in 
Emacs, and is not used elsewhere. It was introduced in 1997 and was 
superseded in 1998 by buffer-display-time, and the rare code that 
worries about whether a buffer has been displayed 
(ibuffer-mark-old-buffers, clean-buffer-list) uses the newer variable.