bug#14819: Scrolling page up-page down with scroll bar does not work

[Stefan Kangas]

Angelo Graziosi <angelo.graziosi@alice.it> writes:

> Il 08/07/2013 18.53, Angelo Graziosi ha scritto:
>> Il 08/07/2013 18.23, Eli Zaretskii ha scritto:
>>>> Date: Mon, 08 Jul 2013 15:08:11 +0200
>>>> From: Angelo Graziosi <angelo.graziosi@alice.it>
>>>>
>>>> To reproduce:
>>>
>>> In what version of Emacs?  (Why not use 'report-emacs-bug'?)
>>
>> Trunk r. 113304 GTK build on Cygwin (I will try it for the next bug
>> report...)
>>
>> I will try on GNU/Linux to see if this is Cygwin related...
>
> It seem a Cygwin issue. I can't reproduce it on Kubuntu.. Curiously, it works 
> on
> Cygwin if I click with mouse-3 instead of mouse-1..
>
> I wonder if this is related to same recent update. Indeed I can reproduce the
> issue also with old build, say last march..
[...]
>>>> $ emacs -Q &
>>>> C-x C-f A_LONG_TEXT_FILE
>>>>
>>>> The scroll bar is on the right and it has an UP arrow and a DOWN arrow.
>>>> Clicking with mouse-1 on these arrows, scrolls the buffer one line at
>>>> time (up or down), and this is OK.
>>>>
>>>> Now, clicking just above the DOWN arrow or just below the UP arrow
>>>> should scroll the buffer a *page* at time (down or up), instead it only
>>>> moves the scroll bar cursor.. :-(
>>>
>>> Works as expected for me in the w32 build of yesterday's trunk.

That was 7 years ago.

Are you still seeing this on a modern version of Emacs, such as the
recently released version 27.1?

Best regards,
Stefan Kangas