GNU bug report logs - #72585
31.0.50; inconsistency between mouse-wheel-buttons and mouse-wheel-[down/up]-event

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>
To: bug-gnu-emacs <at> gnu.org
Subject: 31.0.50; inconsistency between mouse-wheel-buttons and
 mouse-wheel-[down/up]-event
Date: Mon, 12 Aug 2024 11:22:54 +0900

mouse-wheel-down-event and mouse-wheel-up-event default value are
`mouse-4` and `mouse-5`, respectively.  But mouse-wheel-buttons's
default is
((4 . wheel-up) (5 . wheel-down) (6 . wheel-left) (7 . wheel-right)) .

Is this inconsistency intended?

-- 
Kazuhiro Ito

Message #8 received at 72585 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>, Po Lu <luangruo <at> yahoo.com>,
 Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 72585 <at> debbugs.gnu.org
Subject: Re: bug#72585: 31.0.50; inconsistency between mouse-wheel-buttons and
 mouse-wheel-[down/up]-event
Date: Thu, 15 Aug 2024 10:47:25 +0300

> From: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>
> Date: Mon, 12 Aug 2024 11:22:54 +0900
> 
> 
> mouse-wheel-down-event and mouse-wheel-up-event default value are
> `mouse-4` and `mouse-5`, respectively.  But mouse-wheel-buttons's
> default is
> ((4 . wheel-up) (5 . wheel-down) (6 . wheel-left) (7 . wheel-right)) .
> 
> Is this inconsistency intended?

Adding Stefan and Po Lu.  Any comments?

Message #11 received at 72585 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>
Cc: 72585 <at> debbugs.gnu.org
Subject: Re: bug#72585: 31.0.50; inconsistency between mouse-wheel-buttons
 and mouse-wheel-[down/up]-event
Date: Thu, 15 Aug 2024 07:21:58 -0400

> mouse-wheel-down-event and mouse-wheel-up-event default value are
> `mouse-4` and `mouse-5`, respectively.  But mouse-wheel-buttons's
> default is
> ((4 . wheel-up) (5 . wheel-down) (6 . wheel-left) (7 . wheel-right)) .
>
> Is this inconsistency intended?

Not sure what is the inconsistency you see here.

If you mean the up/down switch, then it's "documented" in the docstring
of `mouse-wheel-down-event`:

    Event used for scrolling down, beside ‘wheel-up’, if any.


- Stefan

Message #14 received at 72585 <at> debbugs.gnu.org (full text, mbox):

From: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 72585 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>
Subject: Re: bug#72585: 31.0.50; inconsistency between mouse-wheel-buttons and
 mouse-wheel-[down/up]-event
Date: Thu, 15 Aug 2024 20:49:35 +0900

> > mouse-wheel-down-event and mouse-wheel-up-event default value are
> > `mouse-4` and `mouse-5`, respectively.  But mouse-wheel-buttons's
> > default is
> > ((4 . wheel-up) (5 . wheel-down) (6 . wheel-left) (7 . wheel-right)) .
> >
> > Is this inconsistency intended?
> 
> Not sure what is the inconsistency you see here.

Ah, sorry, I misread related documents.  I don't have an environments
on which emacs receives mouse-4/5 events for mouse wheel, so I couldn't
confirm actual behavior.

Because Mouse Input node on emacs.info say as below,

> When you click the left mouse button, Emacs receives a mouse-1
> event. To see what command is bound to that event, you can type C-h
> c and then press the left mouse button. Similarly, the middle mouse
> button is mouse-2 and the right mouse button is mouse-3. If you have
> a mouse with a wheel, the wheel events are commonly bound to either
> wheel-down or wheel-up, or mouse-4 and mouse-5, but that depends on
> the operating system configuration.
>
> In general, legacy X systems and terminals (see Using a Mouse in
> Text Terminals) will report mouse-4 and mouse-5, while all other
> systems will report wheel-down and wheel-up.

I believed wheel-down/up whould send mouse-4/5 events to Emacs.

-- 
Kazuhiro Ito

Message #17 received at 72585 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 72585 <at> debbugs.gnu.org, Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>,
 Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#72585: 31.0.50; inconsistency between mouse-wheel-buttons
 and mouse-wheel-[down/up]-event
Date: Thu, 15 Aug 2024 19:58:49 +0800

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>
>> Date: Mon, 12 Aug 2024 11:22:54 +0900
>> 
>> 
>> mouse-wheel-down-event and mouse-wheel-up-event default value are
>> `mouse-4` and `mouse-5`, respectively.  But mouse-wheel-buttons's
>> default is
>> ((4 . wheel-up) (5 . wheel-down) (6 . wheel-left) (7 . wheel-right)) .
>> 
>> Is this inconsistency intended?
>
> Adding Stefan and Po Lu.  Any comments?

It's intended, as by a series of historical accidents Emacs has a
`wheel-down event that is used for scrolling down and vice versa.

Message #20 received at 72585 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 72585 <at> debbugs.gnu.org, Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>,
 Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#72585: 31.0.50; inconsistency between mouse-wheel-buttons
 and mouse-wheel-[down/up]-event
Date: Fri, 16 Aug 2024 07:56:21 +0800

Po Lu <luangruo <at> yahoo.com> writes:

> Eli Zaretskii <eliz <at> gnu.org> writes:
>
>>> From: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>
>>> Date: Mon, 12 Aug 2024 11:22:54 +0900
>>> 
>>> 
>>> mouse-wheel-down-event and mouse-wheel-up-event default value are
>>> `mouse-4` and `mouse-5`, respectively.  But mouse-wheel-buttons's
>>> default is
>>> ((4 . wheel-up) (5 . wheel-down) (6 . wheel-left) (7 . wheel-right)) .
>>> 
>>> Is this inconsistency intended?
>>
>> Adding Stefan and Po Lu.  Any comments?
>
> It's intended, as by a series of historical accidents Emacs has a
> `wheel-down event that is used for scrolling down and vice versa.

A `wheel-up' event that is used for scrolling down.  Sorry!

Message #25 received at 72585-done <at> debbugs.gnu.org (full text, mbox):

From: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>
To: Po Lu <luangruo <at> yahoo.com>, Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 72585-done <at> debbugs.gnu.org
Subject: Re: bug#72585: 31.0.50; inconsistency between mouse-wheel-buttons and
 mouse-wheel-[down/up]-event
Date: Fri, 16 Aug 2024 22:35:11 +0900

> >>> mouse-wheel-down-event and mouse-wheel-up-event default value are
> >>> `mouse-4` and `mouse-5`, respectively.  But mouse-wheel-buttons's
> >>> default is
> >>> ((4 . wheel-up) (5 . wheel-down) (6 . wheel-left) (7 . wheel-right)) .
> >>> 
> >>> Is this inconsistency intended?
> >>
> >> Adding Stefan and Po Lu.  Any comments?
> >
> > It's intended, as by a series of historical accidents Emacs has a
> > `wheel-down event that is used for scrolling down and vice versa.
> 
> A `wheel-up' event that is used for scrolling down.  Sorry!

Stefan and Po Lu, thank you for your answers and sorry for my
misreading.

It is not a bug, so I'm closing the issue.

-- 
Kazuhiro Ito

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