From: Stephen Molitor <stephen.molitor@icloud.com>
Date: Thu, 14 Mar 2024 17:10:37 -0500
Not that I’ve noticed.
I mean maybe it does, but I haven’t noticed. I have a fast machine. Is there an easy way to measure?
Yes, of course. Here's one example:
(defun scroll-up-benchmark ()
(interactive)
(let ((oldgc gcs-done)
(oldtime (float-time)))
(condition-case nil (while t (scroll-up) (redisplay))
(error (message "GCs: %d Elapsed time: %f seconds"
(- gcs-done oldgc) (- (float-time) oldtime))))))
Run this on a large file (I use src/xdisp.c) with and without your
set-char-table-range customization, and compare the results.
Btw, why aren't digit characters 0-9 in the regexp you use in
sm-safe-table? More generally, why not all of the ASCII characters
are there? isn't smart kerning performed for them as well? Come to
think about that, what about Latin non-ASCII characters like á etc.?