modifier-only shortcuts

[Cyrille Berger]

> 3) thousands (millions?) people use those combinations on windows and
> even X (check xkb options for switching groups) and they don't complain,
> instead I see people complain about kxkb
In my personal experience with windows, if you don't want to change the layout 
of your keyboard (and I don't know how many people do that in comparison of 
people like me who don't want), if you don't know how to change it with a 
shortcut, and if you use a lot of ctrl+shift+somethingelse shortcuts. Then 
you change your layout about one time per hour, and you have no idea how you 
did that, and it takes time to realise what was wrong.

So, if it is really the best solution (to use ctrl+shift), please consider 
that a lot of people don't want to change their layout, and use 
ctrl+shift+otherkey a lot, and who will have a lot of problem if the use of 
ctrl+shift is activated by default.

-- 
--- Cyrille Berger ---