Submitted by Daniel Elstner:

---

Basically, the bottom row of my keyboard (which is just a standard pc105
model with three replaced caps) now looks like this:

    <Ctrl> <Tux> <Alt> <----Space----> <AltGr> <Alt> <Tux> <Ctrl>

In order to make the keyboard work as advertised on the key caps, I need
to map the keys as follows:

    <LWIN> = Super_L
    <RWIN> = Alt_R Meta_R
    <MENU> = Super_R

So I did just that by putting another option into symbols/altwin:

// Layout for Tux key caps with additional right Alt key
partial modifier_keys 
xkb_symbols "alt_super_win" {
    key <LALT> {        [       Alt_L,  Meta_L          ]       };
    key <RWIN> {        [       Alt_R,  Meta_R          ]       };
    key <LWIN> {        [       Super_L                 ]       };
    key <MENU> {        [       Super_R                 ]       };
    modifier_map Mod1   { Alt_L, Alt_R, Meta_L, Meta_R };
    modifier_map Mod4   { Super_L, Super_R };
};

Obviously I also need put this line into rules/xfree86:

altwin:alt_super_win    =       +altwin(alt_super_win)
 
And finally there's the description entry in rules/xfree86.xml.  The
description was a little hard to keep short since this option actually
sets up two modifier mappings.  However, I'm not sure if splitting it
into separate options would actually be useful.  (This would require
adding another option group too, since in this one multiple selections
are disallowed.)  Anyway, here's the text:

<configItem>
  <name>altwin:alt_super_win</name>
  <description>Alt is mapped to the right Win-key and Super to Menu.</description>
</configItem>
 
If you look at the patch you'll see that I also changed two other option
entries in the XML file.  Those referred to option names which did not
exist; looks very much just like a copy-n-paste mistake.