text: /* n_4.c:   Special tokens. */
  
  /* 4.1: Digraph spellings in directive line.    */
  /*  "abc";  */
  %: define  stringize( a)    %: a
  
      stringize( abc);
  
  /* 4.2: Digraph spellings are retained in stringization.    */
  /*  "<:";   */
      stringize( <:);
  
  /* { dg-do preprocess }
     { dg-options "-std=iso9899:199409" }
     { dg-final { if ![file exist n_4.i] { return }                       } }
     { dg-final { if \{ [grep n_4.i "\"abc\""] != ""              \} \{   } }
     { dg-final { if \{ [grep n_4.i "\"<:\""] != ""               \} \{   } }
     { dg-final { return \} \}                                            } }
     { dg-final { fail "n_4.c: digraphs conversion"                       } }
   */
  
  