GNU bug report logs - #50364
27.2; EDT mode Xmodmap related documentation needs updating

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From: Hin-Tak Leung <htl10 <at> users.sourceforge.net>
To: 50364 <at> debbugs.gnu.org
Cc: Charles Aylmer <ca22 <at> cam.ac.uk>
Subject: bug#50364: 27.2; EDT mode Xmodmap related documentation needs updating
Date: Fri, 3 Sep 2021 23:25:21 +0000 (UTC)

Hi,

Been fighting with EDT mode configuration for a few weeks. 

The fundamental problem is that all the Xmodmap related instruction in
    https://git.savannah.gnu.org/cgit/emacs.git/tree/doc/misc/edt.texi#n418
and the entire section from about
    https://git.savannah.gnu.org/cgit/emacs.git/tree/doc/misc/edt.texi#n325
to
    https://git.savannah.gnu.org/cgit/emacs.git/tree/doc/misc/edt.texi#n530
is significantly outdated, by about a whole decade.

Modern Linux - and also Sun Workstations which have Gnome as desktop - supports
plug-and-play keyboards and mouses with X Keyboard Extension, and would periodically
reset any manually applied xmodmap settings; and also since about Gnome 3.6
(around 2010), ignores .Xmodmap .

The proper way of remapping the Num_Lock key to EDT's GOLD key usage
is via a custom keyboard layout with X Keyboard Extension. Failing that,
the Apple family of xkb keyboard models, "Apple laptop", and "Apple Aluminium (*)", 
apple_laptop/applealu_ansi/applealu_iso/applealu_jis , have a definition
for the Clear key at that key location.

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