Here's a modification that works with keywords and other Multilinks.

===
        def repr_link(cls,col):
            def f(x):
                print x, cls, col
                if x==None:
                    return ""
                elif isinstance(x, list): # <-
                    return str([cls.get(y,col) for y in x]) # <-
                else:
                    return str(cls.get(x,col))
            return f

        props = klass.getprops()

        for col in columns:
            represent[col] = str
            islink = isinstance(props[col], hyperdb.Link)
            ismultilink = isinstance(props[col], hyperdb.Multilink)
            if  islink or ismultilink:
                cn = props[col].classname
===