Finish up yes(1) by adding multiple string support

README

@@ -84,7 +84,7 @@ The following tools are implemented ('*' == finished, '#' == UTF-8 support,
 =  sha512sum       non-posix                       none
    wc              yes                             none
 =  xargs           no                              -I, -L, -p, -s, -t, -x
-=  yes             yes                             none
+=* yes             yes                             none
 
 The  complement of  sbase  is  ubase[1] which  is  Linux-specific  and
 provides all  the non-portable tools.   Together they are  intended to

yes.1

@@ -1,12 +1,14 @@
-.Dd January 30, 2015
+.Dd January 31, 2015
 .Dt YES 1
 .Os sbase
 .Sh NAME
 .Nm yes
-.Nd output a string repeatedly
+.Nd output strings repeatedly
 .Sh SYNOPSIS
 .Nm
 .Op Ar string ...
 .Sh DESCRIPTION
 .Nm
-will repeatedly output 'y' or the strings specified.
+will repeatedly write 'y' or a line with each
+.Ar string
+to stdout.

yes.c

@@ -7,18 +7,22 @@
 static void
 usage(void)
 {
-	eprintf("usage: %s [string]\n", argv0);
+	eprintf("usage: %s [string ...]\n", argv0);
 }
 
 int
 main(int argc, char *argv[])
 {
+	size_t i;
+
 	ARGBEGIN {
 	default:
 		usage();
 	} ARGEND;
 
-	for (;;)
-		puts(argc >= 1 ? argv[0] : "y");
+	for (i = 0; ;i++, i %= argc) {
+		printf("%s", (argc > 0) ? argv[i] : "y");
+		putchar((i == argc - 1) ? '\n' : ' ');
+	}
 	return 1; /* should not reach */
 }