libfile-mmagic has built-in magic(5) entry, and usually I only tested with it. Your test uses /etc/magic file, so the behavor depends on the file.
By the way, Debian's file(1) uses /usr/share/misc/file/magic, and /etc/magic is for user's additional entries. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]