Binding non-ASCII keys in .emacs not working

[Ole Laursen <olau@hardworking.dk>]

Hi,

I used to have

  (global-set-key [(control æ)] 'delete-line)
                            ^
                      non-ASCII character

in my .emacs. But after Debian upgraded to 21.3, it doesn't work
anymore. 'C-u C-x =' on top of the 'æ' says

  character: æ (04346, 2278, 0x8e6)
    charset: latin-iso8859-1
	     (Right-Hand Part of Latin Alphabet 1 (ISO/IEC 8859-1): ISO-IR-100)
 code point: 102
     syntax: word
   category: l:Latin  
buffer code: 0x81 0xE6
  file code: E6 (encoded by coding system iso-latin-1-unix)
       font: -Misc-Fixed-Medium-R-Normal--15-140-75-75-C-90-ISO8859-1

As a consequence of asking about this before here (I think) I used to
have '-*- unibyte: t -*-' at the top of the file. Removing that and
restarting doesn't change anything. "locale" says

  LANG=da_DK.ISO-8859-1
  ...

Running 'C-h k C-æ' says

  æ runs the command self-insert-command
  (self-insert-command N)
     which is an interactive built-in function.

What do I do? I miss delete-line for deleting lines when I have
something in the kill ring I don't want to push further back.

-- 
Ole Laursen
http://www.cs.auc.dk/~olau/