Rdf.SedlexUtilities to use Ulex.
val upd : Lexing.position -> Sedlexing.lexbuf -> Lexing.positionexception Parse_error of exn * Lexing.positionval menhir_with_ulex :
('a, 'b) MenhirLib.Convert.traditional ->
(Lexing.position -> Sedlexing.lexbuf -> Lexing.position * 'a) ->
?fname:string ->
Sedlexing.lexbuf ->
'b