Add -d and -t flags to usage. Add usage().

usr.bin/banner/banner.6

@@ -40,23 +40,34 @@
 .Nd print large banner on printer
 .Sh SYNOPSIS
 .Nm banner
-.Op Fl w Ar n
+.Op Fl d
+.Op Fl t
+.Op Fl w Ar width
 .Ar message ...
 .Sh DESCRIPTION
 .Nm Banner
 prints a large, high quality banner on the standard output.
 If the message is omitted, it prompts for and reads one line of its
 standard input.
-If
-.Fl w
-is given, the output is changed from a width of 132 to
-.Ar n ,
-suitable for a narrow terminal.
 .Pp
 The output should be printed on paper of the appropriate width,
 with no breaks between the pages.
+.Pp
+The following options are available:
+.Bl -tag -width indent
+.It Fl d
+Enable debug.
+.It Fl t
+Enable trace.
+.It Fl w Ar width
+Change the output from a width of 132 to
+.Ar width ,
+suitable for a narrow terminal.
+.El
 .Sh BUGS
-Several ASCII characters are not defined, notably <, >, [, ], \\,
+Several
+.Tn ASCII
+characters are not defined, notably <, >, [, ], \\,
 ^, _, {, }, |, and ~.
 Also, the characters ", ', and & are funny looking (but in a useful way.)
 .Pp

usr.bin/banner/banner.c

@@ -1027,6 +1027,8 @@ char	print[DWIDTH];
 int	debug, i, j, linen, max, nchars, pc, term, trace, x, y;
 int	width = DWIDTH;	/* -w option: scrunch letters to 80 columns */
 
+static void usage __P((void));
+
 int
 main(argc, argv)
 	int argc;
@@ -1049,8 +1051,7 @@ main(argc, argv)
 			break;
 		case '?':
 		default:
-			(void)fprintf(stderr, "usage: banner [-w width]\n");
-			exit(1);
+			usage();
 		}
 	argc -= optind;
 	argv += optind;
@@ -1109,7 +1110,7 @@ main(argc, argv)
 	for (i = 0; i < nchars; i++)
 		if ((u_char) message[i] >= NCHARS ||
 		    asc_ptr[(u_char) message[i]] == 0) {
-			warnx("The character '%c' is not in my character set",
+			warnx("the character '%c' is not in my character set",
 				message[i]);
 			j++;
 		}
@@ -1169,3 +1170,10 @@ main(argc, argv)
 	free(message);
 	exit(0);
 }
+
+static void
+usage()
+{
+	fprintf(stderr, "usage: banner [-d] [-t] [-w width] message ...\n");
+	exit(1);
+}