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Subject: Re: German Keyboard for X
To: Marco Atzeri <marco.atzeri@gmail.com>,
        The Cygwin Mailing List <cygwin@cygwin.com>
References: <4b28ec91-1974-1bd7-ed54-da95f039b767@gmail.com>
From: Jon Turney <jon.turney@dronecode.org.uk>
Message-ID: <9dba6197-fc55-fa5a-de7b-4849e1f07324@dronecode.org.uk>
Date: Tue, 5 May 2020 17:20:19 +0100
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On 05/05/2020 17:01, Marco Atzeri via Cygwin wrote:
> I see a glitch on the Keyboard for X (not on Mintty),
> when I am running this Keyboard Layout
> 
> (--) Windows keyboard layout: "A0000407" (a0000407) "Deutsch - no dead 
> keys", type 34668816
> (--) Found matching XKB configuration "German (Germany)"
> (--) Model = "pc105" Layout = "de" Variant = "none" Options = "none"
> (--) Windows keyboard layout device identifier indicates Macintosh, 
> setting Model = "macintosh"Rules = "base" Model = "macintosh" Layout = 
> "de" Variant = "none" Options = "none"
> 
> the ALTGR+8 and ALTGR+9 produces {} (same as ALTGR+7 and ALTGR+0)
>   instead of the expected []
> 
> The Windows Layout is coming from:
> https://zauner.nllk.net/post/0014-windows-no-dead-keys/
> 
> 
> The problem is not present with the default Windows German Layout
> 
> (--) Windows keyboard layout: "00000407" (00000407) "German", type 7
> (--) Found matching XKB configuration "German (Germany)"
> (--) Model = "pc105" Layout = "de" Variant = "none" Options = "none"
> Rules = "base" Model = "pc105" Layout = "de" Variant = "none" Options = 
> "none"
> 
> What ever this Model = "macintosh" is, I doubt having
> ALTGR+8 same as ALTGR+7 makes any sense

There's some code in the X server which tries to identify if you are 
using Windows under bootcamp on a mac, with the appropriate Windows 
keyboard layout, and turns on model=mac there.

At the moment, this gets turned on if the top 2 bits of the layout ID 
are set, which really just means "non-Microsoft provided layout", which 
is perhaps too aggressive.

It's probably a bug in xkeyboard-config that combination of options 
produces mapping that's messed up like that.

> Suggestion?

i) Explicitly set the X server keyboard layout you want using setxkbmap 
or the equivalent options.

ii) Provide the information per [1] and I can add it to the set of 
layout autodetected by the server. (Not totally sure that's a the best 
idea, as there's nothing to prevent someone else publishing a different 
variant german layout with the same ID)

[1] https://x.cygwin.com/docs/faq/cygwin-x-faq.html#q-submit-layout
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