Can i change the rules for syntax highlightin

Hi!

I have some problem with the syntax highlighting in LISP. I'm from Sweden, and in our alphabetic we got the letters a-z, but also the letters å, ä and ö, and there seems to be a little problem with those in the LISP highlighting.

These are the words that are highlighted in LISP (by default):
cddaar cddadr cdddar cddddr cons list append reverse last nth nthcdr member assoc subst sublis nsubst nsublis remove length list length mapc mapcar mapl maplist mapcan mapcon rplaca rplacd nconc delete atom symbolp numberp boundp null listp consp minusp zerop plusp evenp oddp eq eql equal cond case and or let l if prog prog1 prog2 progn go return do dolist dotimes catch throw error cerror break continue errset baktrace evalhook truncate float rem min max abs sin cos tan expt exp sqrt random logand logior logxor lognot bignums logeqv lognand lognor logorc2 logtest logbitp logcount integer length nil

As you can see, the letter l is one of these word, and if you combines that with å, ä or ö, there is a problem.

Example:

Here is a function that highlights correct:
_______________

(defun add-digit-last (digit number)
   
    (+ (* number 10) digit)
   
)
_______________

With the code above, the word "defun" and the symbols "+", "*", "(" and ")" is highlighted, as it should be. But if I translate my function name and variables to Swedish, I get this code:
_______________

(defun lägg-till-siffra-sist (siffra tal)
   
    (+ (* tal 10) siffra)
   
)
_______________

And here is a problem (with the letter "ä"). Just as with the code written in English, the word "defun" and the symbols "+", "*", "(" and ")" is highlighted, but the letter "l", directly after "defun ", is also highlighted (because of the letter "ä" stands direct after it).

I don't know how the syntax highlighting is build, but can I somehow configured it to work as I want it to work?