icu unicode header
^© \d\d\d\d.*Unicode, Inc. and others.
(?s)^© \d\d\d\d.*Unicode, Inc. and others.
License & terms of use: http://www.unicode.org/copyright.html(.*?)(?:Copyright.*All Rights Reserved.)?
(.*)Copyright \([Cc]\).*All [Rr]ights [Rr]eserved.
(?:Copyright[^\n]+[\n])*(?:This software is made available under the terms of the
ICU License -- ICU 1.8.1 and later.)?