GNU bug report logs - #77224
[PATCH] New minor mode 'cursor-indicators-mode'

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Message #191 received at 77224 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Daniel Mendler <mail <at> daniel-mendler.de>
Cc: 77224 <at> debbugs.gnu.org, eg642616 <at> gmail.com, juri <at> linkov.net
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
Date: Sat, 29 Mar 2025 11:50:32 +0300

> From: Daniel Mendler <mail <at> daniel-mendler.de>
> Cc: eg642616 <at> gmail.com,  77224 <at> debbugs.gnu.org,  juri <at> linkov.net
> Date: Sat, 29 Mar 2025 09:32:09 +0100
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> >> From: Daniel Mendler <mail <at> daniel-mendler.de>
> >> Cc: eg642616 <at> gmail.com,  77224 <at> debbugs.gnu.org,  juri <at> linkov.net
> >> Date: Sat, 29 Mar 2025 08:52:09 +0100
> >> 
> >> The `hl-line-highlight' moves the line highlight overlay, such that it
> >> moves immediately with the cursor and does not lag behind.
> >
> > You may not be aware, but moving and changing overlays disables some
> > redisplay optimizations, and in many cases can trigger an additional
> > immediate redisplay cycle.  So doing that after every command exits
> > in practice means every redisplay cycle is adversely affected.
> 
> I am aware. What do you suggest as an alternative? It would look odd if
> the `hl-line-overlay' would not move directly with the cursor and would
> lag behind.

I could suggest one or two alternatives, but is it worth our time?  is
someone actually considering any such changes?

My point was and remains the same: adding more and more features to
post-command-hook is something to be avoided.

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