logname turd polish

[Ted Unangst]

just because.

Index: logname.c
===================================================================
RCS file: /cvs/src/usr.bin/logname/logname.c,v
retrieving revision 1.9
diff -u -p -r1.9 logname.c
--- logname.c   9 Oct 2015 01:37:08 -0000       1.9
+++ logname.c   24 Jun 2016 01:02:58 -0000
@@ -32,45 +32,30 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <locale.h>
+#include <string.h>
 #include <unistd.h>
 #include <err.h>
 
-void usage(void);
+static void __dead
+usage(void)
+{
+       (void)fprintf(stderr, "usage: logname\n");
+       exit(1);
+}
 
 int
 main(int argc, char *argv[])
 {
-       int ch;
-       char *p;
-
-       setlocale(LC_ALL, "");
+       const char *p;
 
        if (pledge("stdio", NULL) == -1)
                err(1, "pledge");
 
-       while ((ch = getopt(argc, argv, "")) != -1)
-               switch (ch) {
-               case '?':
-               default:
-                       usage();
-                       /* NOTREACHED */
-               }
-
-       if (argc != optind) {
+       if (!(argc == 1 || (argc == 2 && strcmp(argv[1], "--") == 0)))
                usage();
-               /* NOTREACHED */
-       }
 
        if ((p = getlogin()) == NULL)
                err(1, NULL);
        (void)printf("%s\n", p);
-       exit(0);
-}
-
-void
-usage(void)
-{
-       (void)fprintf(stderr, "usage: logname\n");
-       exit(1);
+       return 0;
 }