Followind the idea described
here I defined a Dvorak Keyboard Layout extension allowing me to input the german umlauts and sharp 's' by pressing AltGr.
To use, create a file
/usr/share/X11/xkb/symbols/us_dvorak_de containing this:
// us_dvorak_de: Custom extended us keymap
default
partial alphanumeric_keys
xkb_symbols "dvorak-de" {
name[Group1]= "USA - Dvorak DE";
include "us(dvorak)"
include "level3(ralt_switch)"
key <AC03> {[ e, E, EuroSign, U2203 ]};
key <AD09> {[ r, R, registered ]};
key <AC08> {[ t, T, trademark ]};
key <AC04> {[ u, U, udiaeresis, Udiaeresis ]};
key <AC02> {[ o, O, odiaeresis, Odiaeresis ]};
key <AC01> {[ a, A, adiaeresis, Adiaeresis ]};
key <AC10> {[ s, S, ssharp ]};
key <AC06> {[ d, D, degree ]};
key <AD08> {[ c, C, copyright, cent ]};
key <AB07> {[ m, M, mu ]};
key <AD02> {[ comma, less, lessthanequal, lessthanequal ]};
key <AD03> {[ period, greater, ellipsis, greaterthanequal ]};
};
The most reliable way to activate the layout seems to be:
setxkbmap -option lv3:ralt_switch,grp:lwin_toggle us,bg,us_dvorak_de ,,dvorak-de
Better is to specify this in
/etc/default/console-setup, e.g.:
XKBMODEL="pc105"
XKBLAYOUT="us,bg"
XKBVARIANT="dvorak-intl,"
XKBOPTIONS="grp:lwin_toggle,lv3:ralt_switch"
