! Copyright (C) 2006, 2009 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: arrays combinators documents fry kernel math sequences
-accessors unicode.categories unicode.breaks combinators.short-circuit ;
+accessors unicode combinators.short-circuit ;
IN: documents.elements
GENERIC: prev-elt ( loc document elt -- newloc )