use "ML-Systems/smlnj.ML";                                      

 local

   val smlnj_use_text = use_text

   fun strip ([], name, _) = name

     | strip (["Distribution"], name, _) = name

     | strip (h1 :: t1, h2 :: t2, def) =

       if h1 = h2 then strip (t1, t2, def) else def

   fun rewrite (NONE, name) = "use_text" :: name

     | rewrite (SOME home, name) =

       strip (#arcs (OS.Path.fromString home), name, "use_text" :: name)

 in

   fun use_text name p v t = 

       let val name = case name of "" => "unnamed" | name => name

 	  val arcs = rewrite (OS.Process.getEnv "ISABELLE_HOME",

 			      #arcs (OS.Path.fromString name))

 	  val _    = AnnoMaLy.nameNextStream ("isabelle" :: arcs)

       in  smlnj_use_text name p v t

       end

 end;