GNU bug report logs - #18739
24.3; Request for a hook to be provided when scrolling will move the cursor

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: josh+gnu <at> nispio.net, 18739 <at> debbugs.gnu.org
Subject: bug#18739: 24.3; Request for a hook to be provided when scrolling will move the cursor
Date: Wed, 15 Oct 2014 18:48:16 -0400

>> It would be helpful to have a hook that would be called before any
>> scrolling command moves the cursor.  In other words, I want to be
>> notified when an update to the display will force the location of
>> `point' to change in the current buffer.
> What's wrong with window-scroll-functions?

But these are also called when point is not affected, right?

>> One motivation for such a hook is the ability to save the current
>> cursor location before scrolling so that it is possible to
>> automatically jump back to that position after scolling.
> If you jump back, you will actually undo the scroll, so I'm not sure
> what kind of situation are you talking about, or why do you use the
> scrolling commands to begin with.  Please elaborate.

He's thinking of scrolling back a while later.

Think about a case such as Martin's scroll-replace.el (just added to GNU
ELPA).


        Stefan

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