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Reiner Steib <4.uce.03.r.s@nurfuerspam.de> writes:

> +    (while files
> +      (let* ((ffile (car files))
> [...]
> +	(setq files (cdr files))

This can be simplified to (let* ((ffile (pop files)) ...) ...).
(Unless you need the old value of files between the let* line and the
setq line -- I didn't look.)

-- 
A preposition is not a good thing to end a sentence with.