GNU bug report logs - #76812
vestigial elisp manual descriptions of obsolete variables mouse-wheel-up/down-event

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Message #8 received at 76812 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefankangas <at> gmail.com>
To: JD Smith <jdtsmith <at> gmail.com>, 76812 <at> debbugs.gnu.org
Cc: Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#76812: vestigial elisp manual descriptions of obsolete
 variables mouse-wheel-up/down-event
Date: Fri, 7 Mar 2025 16:27:38 +0000

JD Smith <jdtsmith <at> gmail.com> writes:

> The following paragraph in the elisp manual section "Miscellaneous System Events" describes blinding events based on the now obsolete variables `mouse-wheel-down-event', etc.:
>
>>      The ‘wheel-up’ and ‘wheel-down’ events are generated only on some
>>      kinds of systems.  On other systems, other events like ‘mouse-4’
>>      and ‘mouse-5’ are used instead.  Portable code should handle both
>>      ‘wheel-up’ and ‘wheel-down’ events as well as the events specified
>>      in the variables ‘mouse-wheel-up-event’ and
>>      ‘mouse-wheel-down-event’, defined in ‘mwheel.el’.  Beware that for
>>      historical reasons the ‘mouse-wheel-_up_-event’ is the variable
>>      that holds an event that should be handled similarly to
>>      ‘wheel-_down_’ and vice versa.

Stefan, WDYT?

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