Phil Endecott wrote:

- I have no delete key, so I can't type ctrl-alt-del!  (I have to keep 
another keyboard plugged in just for this!)  I'd like to use the eject 
key, which is immediately above the backspace key, for this.

I eventually discovered that loadkeys can make any key combination 
trigger the ctrl-alt-del action without any kernel changes:

keycode 161 = Remove
         Control Alt keycode 161 = Boot

This also made me wonder why HID_QUIRK_APPLE_HAS_FN has been 
implemented in the kernel, rather than in custom keymaps.  If it were 
in custom keymaps then it would be easier for a user to:

- The FN key and the left Ctrl key are the same size and the keycaps 
can easily be exchanged. The order of these keys is often something 
that people complain about, e.g. if they're used to pressing 
the bottom-left key on their desktop keyboard for ctrl but now find 
that it isn't. Often there is nothing that can be done about this 
because the logic for the FN key is inside the keyboard and not 
fixable in software, but in the case of this keyboard I believe it 
could be changed

I have written some of this up for the benefit of anyone else trying to 
get this device working properly: 
http://chezphil.org/apple-alu-bluetooth-kb-linux/ - hopefully the 
search engines will find that and the next users will waste less time 
on it.

Phil.