Re: Odd slowness in grep and dired modes

[Smith_RS <rsmithpv@gmail.com>]

On Friday, March 21, 2014 1:57:07 AM UTC-7, Eli Zaretskii wrote:
> Sorry, I don't understand: lag between which events?

Both dired and grep-find give you a list of targets that you can select via mouse-1 or mouse-2, which causes the target file to open in another window. While this list is active you can mouse-over the targets and Emacs will change the face from the default face to the highlighted face, this is the part that's slowing down.

> Did this start lately?  If so, what changed around the time this
> started happening?

It started happening when I started using grep-find mode more intensely, to search through hundreds or even thousands of files. I then started noticing dired do the same thing but not to the same extent because I wasn't working with super-long lists of results.

I'm a heavy org-mode user so I often need to find something in a notes file that's several years old (grepping through old notes files is basically how I do my life. :)

> Also, does this happen in "emacs -Q"?  If not, I'd suspect some
> customization you have on your .emacs init file.

Yes.

(NOTE: See below, Drew's idea worked. Thanks for your help)