_method char16_vector.as_tokens(delim_string)

   ## Returns a simple_vector of char16_vectors parsed according to
   ## the characters in delim_string.  For example,
   ## "..a.b c!d".as_tokens(" !.") will return {"a","b","c","d"}

   the_rope << rope.new()
   tok << ""
   _for c _over _self.elements() _loop
      _if delim_string.includes?(c) _then
         _if tok = "" _then
            _continue
         _endif
         the_rope.add_last(tok)
         tok << ""
      _else
         tok << tok + c
      _endif
   _endloop
   _if tok ~= "" _then
      the_rope.add_last(tok)
   _endif
   _return the_rope.as_simple_vector()
_endmethod
$