update from automake-2.1h

diff --git a/src/ansi2knr.c b/src/ansi2knr.c
index c6ee83309a8239e84270732e7c5ce53b56dba3bf..791eee04c09e7a7e78988679a2775322ddc8bfc3 100644 (file)
--- a/src/ansi2knr.c
+++ b/src/ansi2knr.c
@@ -184,7 +184,7 @@ main(argc, argv)
         */
        int convert_varargs = 1;
 
-       if ( argc > 1 && argv[1][0] == '-' )
+       if ( argc > 1 && argv[1][0] == '-' && argv[1][1] )
          {     if ( !strcmp(argv[1], "--varargs") )
                  {     convert_varargs = 1;
                        argc--;
@@ -195,30 +195,29 @@ main(argc, argv)
                        exit(1);
                  }
          }
-       if (argc < 2 || argc > 3)
+       switch ( argc )
           {
+       default:
                printf("Usage: ansi2knr input_file [output_file]\n");
+               exit(0);
+       case 2:
+               out = stdout;
+               break;
+       case 3:
+               out = fopen(argv[2], "w");
+               if ( out == NULL )
+                  {    fprintf(stderr, "Cannot open output file %s\n", argv[2]);
                        exit(1);
                   }
-       in = fopen(argv[1], "r");
+          }
+       if ( argv[1][0] == '-' && !argv[1][1] )
+          in = stdin;
+       else
+          in = fopen(argv[1], "r");
        if ( in == NULL )
-         {
-           fprintf(stderr, "Cannot open input file %s\n", argv[1]);
+          {    fprintf(stderr, "Cannot open input file %s\n", argv[1]);
                exit(1);
           }
-       if (argc == 3)
-         {
-           out = fopen(argv[2], "w");
-           if ( out == NULL )
-             {
-               fprintf(stderr, "Cannot open output file %s\n", argv[2]);
-               exit(1);
-             }
-         }
-       else
-         {
-           out = stdout;
-         }
        fprintf(out, "#line 1 \"%s\"\n", argv[1]);
        buf = malloc(bufsize);
        line = buf;