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bug#28343: 24.5; isearch highlighting slow - suppress for single space c
From: |
Stefan Kangas |
Subject: |
bug#28343: 24.5; isearch highlighting slow - suppress for single space character |
Date: |
Sun, 03 May 2020 03:41:08 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Ed Avis <eda@waniasset.com> writes:
> Run Emacs in a fairly large terminal, say 200x200 characters. Go to the
> end of a buffer with some text in it (long enough to fill the screen)
> and do C-r SPACE. This is an isearch backwards for the space character.
> If you have highlighting turned on, Emacs then starts highlighting
> backwards all the space characters in the buffer. But this can be slow,
> a noticeable few seconds even on a fast machine. (I think it depends on
> the vagaries of memory management and possibly Lisp compiling, since
> it's not always quite that bad; a second attempt takes only about half a
> second. But still it seems a long time.)
>
> A small tweak to isearch would suppress the highlighting when what has
> been typed so far is just a space character. If the user types space
> and then C-s or C-r again, to indicate that he or she really does want
> to search for single spaces, then you can highlight at that point of
> course.
I'm unable to reproduce this on Emacs 28.0.50 (current master).
Are you still seeing this on a recent version of Emacs?
If I don't hear back from you within a couple of weeks, I'll just
close this bug as unreproducible. Thanks in advance.
Best regards,
Stefan Kangas
- bug#28343: 24.5; isearch highlighting slow - suppress for single space character,
Stefan Kangas <=