Include posixver.h.

(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(main): Revert to previous behavior, except report
an error and exit if the obsolete syntax is used and if conforming
to the new standard.

diff --git a/src/fold.c b/src/fold.c
index ea6f987..084258b 100644 (file)
--- a/src/fold.c
+++ b/src/fold.c
@@ -26,6 +26,7 @@
 #include "system.h"
 #include "closeout.h"
 #include "error.h"
+#include "posixver.h"
 #include "xstrtol.h"
 
 /* The official name of this program (e.g., no `g' prefix).  */
@@ -80,10 +81,6 @@ Mandatory arguments to long options are mandatory for short options too.\n\
   -s, --spaces        break at spaces\n\
   -w, --width=WIDTH   use WIDTH columns instead of 80\n\
 "), stdout);
-      if (POSIX2_VERSION < 200112)
-       fputs (_("\
-  -WIDTH              (obsolete) same as -w WIDTH\n\
-"), stdout);
       fputs (HELP_OPTION_DESCRIPTION, stdout);
       fputs (VERSION_OPTION_DESCRIPTION, stdout);
       puts (_("\nReport bugs to <bug-textutils@gnu.org>."));
@@ -250,29 +247,29 @@ main (int argc, char **argv)
 
   break_spaces = count_bytes = have_read_stdin = 0;
 
-  /* If obsolete, turn any numeric options into -w options.  */
-  if (POSIX2_VERSION < 200112)
-    for (i = 1; i < argc; i++)
-      {
-       char const *a = argv[i];
-       if (a[0] == '-')
-         {
-           if (a[1] == '-' && ! a[2])
-             break;
-           if (ISDIGIT (a[1]))
-             {
-               char *s = xmalloc (strlen (a) + 2);
-               s[0] = '-';
-               s[1] = 'w';
-               strcpy (s + 2, a + 1);
-               argv[i] = s;
-               if (OBSOLETE_OPTION_WARNINGS && ! getenv ("POSIXLY_CORRECT"))
-                 error (0, 0,
-                        _("warning: `fold %s' is obsolete; use `fold -w %s'"),
-                        a, a + 1);
-             }
-         }
-      }
+  /* Turn any numeric options into -w options.  */
+  for (i = 1; i < argc; i++)
+    {
+      char const *a = argv[i];
+      if (a[0] == '-')
+       {
+         if (a[1] == '-' && ! a[2])
+           break;
+         if (ISDIGIT (a[1]))
+           {
+             char *s = xmalloc (strlen (a) + 2);
+             s[0] = '-';
+             s[1] = 'w';
+             strcpy (s + 2, a + 1);
+             argv[i] = s;
+             if (200112 <= posix2_version ())
+               {
+                 error (0, 0, _("`%s' option is obsolete; use `%s'"), a, s);
+                 usage (EXIT_FAILURE);
+               }
+           }
+       }
+    }
 
   while ((optc = getopt_long (argc, argv, "bsw:", longopts, NULL)) != -1)
     {