inline strcmp(s, "-") [actually macro-ize it for now - gcc is too stupid]

networking/ftpgetput.c

@@ -132,7 +132,7 @@ int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
 		do_continue = 0;
 	}
 
-	if ((local_path[0] == '-') && (local_path[1] == '\0')) {
+	if (LONE_DASH(local_path)) {
 		fd_local = STDOUT_FILENO;
 		do_continue = 0;
 	}
@@ -212,9 +212,8 @@ int ftp_send(ftp_host_info_t *server, FILE *control_stream,
 	fd_data = xconnect_ftpdata(server, buf);
 
 	/* get the local file */
-	if ((local_path[0] == '-') && (local_path[1] == '\0')) {
-		fd_local = STDIN_FILENO;
-	} else {
+	fd_local = STDIN_FILENO;
+	if (NOT_LONE_DASH(local_path)) {
 		fd_local = xopen(local_path, O_RDONLY);
 		fstat(fd_local, &sbuf);
 

networking/libiproute/ipaddress.c

@@ -681,7 +681,7 @@ static int ipaddr_modify(int cmd, int argc, char **argv)
 				if (strcmp(*argv, "+") == 0) {
 					brd_len = -1;
 				}
-				else if (strcmp(*argv, "-") == 0) {
+				else if (LONE_DASH(*argv)) {
 					brd_len = -2;
 				} else {
 					get_addr(&addr, *argv, req.ifa.ifa_family);

networking/tftp.c

@@ -530,7 +530,7 @@ int tftp_main(int argc, char **argv)
 	if ((localfile == NULL && remotefile == NULL) || (argv[optind] == NULL))
 		bb_show_usage();
 
-	if (localfile == NULL || strcmp(localfile, "-") == 0) {
+	if (localfile == NULL || LONE_DASH(localfile)) {
 		fd = (cmd == tftp_cmd_get) ? STDOUT_FILENO : STDIN_FILENO;
 	} else {
 		fd = open(localfile, flags, 0644); /* fail below */

networking/wget.c

@@ -217,7 +217,7 @@ int wget_main(int argc, char **argv)
 	/*
 	 * Determine where to start transfer.
 	 */
-	if (fname_out[0] == '-' && !fname_out[1]) {
+	if (LONE_DASH(fname_out)) {
 		output_fd = 1;
 		opt &= ~WGET_OPT_CONTINUE;
 	}