GNU bug report logs -
#26347
patch for mwheel.el
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>>> During not only horizontal scroll but also vertical scroll,
>>> `auto-hscroll-mode' should be disabled by following three aspects.
>>>
>>> (1) It should be off during horizontal scroll. If it is on, scope
>>> jumps randomly when point is at the edge. Also, since
>>> horizontal scroll does not move point, there will be
>>> inconsistency between point and scope, and the inconsistency
>>> will result in unexpected shift of the scope.
>>>
>> We don't turn off auto-hscroll-mode when scrolling with the horizontal
>> or vertical scroll bars, and we don't have the problems you describe
>> in those cases. Why is this case different?
>
> I see your point in regard to (1). Yes, if `mwheel-scroll’ can scroll right
> or left like horizontal-scroll-bar does, turing off auto-hscroll-mode is not
> necessary for case (1). Give me time to understand code of horizontal-scroll-bar.
I see (1) is true for Emacs 25.1 on Mac and Emacs 24.5 on Windows
but Emacs 25.1 on Windows.
This bug report was last modified 8 years and 77 days ago.
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