Index: usr.bin/resizewin/resizewin.c
===================================================================
--- usr.bin/resizewin/resizewin.c
+++ usr.bin/resizewin/resizewin.c
@@ -31,6 +31,7 @@
 __FBSDID("$FreeBSD$");
 #include <sys/ioctl.h>
 #include <sys/time.h>
+#include <err.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
@@ -51,7 +52,7 @@
 {
 	struct termios old, new;
 	struct winsize w;
-	int ret, fd, cnt, err;
+	int ret, fd, cnt, err, what;
 	char data[20];
 	struct timeval then, now;
 
@@ -70,6 +71,12 @@
 	if (tcsetattr(fd, TCSANOW, &new) == -1)
 		exit(1);
 
+	/* Discard input received so far */
+	what = FREAD | FWRITE;
+	err = ioctl(fd, TIOCFLUSH, &what);
+	if (err != 0)
+		warn("ioctl");
+
 	if (write(fd, query, sizeof(query)) != sizeof(query)) {
 		err = 1;
 		goto out;
@@ -87,8 +94,8 @@
 				gettimeofday(&now, NULL);
 				timersub(&now, &then, &now);
 				if (now.tv_sec >= 2) {
-					fprintf(stderr, "\n\n\nTimeout reading from terminal\n");
-					fprintf(stderr, "Read %d bytes, %s\n", cnt, data);
+					warnx("timeout reading from terminal; "
+					    "read %d bytes, \"%s\"", cnt, data);
 					err = 1;
 					goto out;
 				}
@@ -104,7 +111,7 @@
 
 		cnt++;
 		if (cnt == sizeof(data) - 2) {
-			fprintf(stderr, "Response too long\n");
+			warnx("response too long");
 			err = 1;
 			goto out;
 		}
@@ -113,7 +120,7 @@
 	/* Parse */
 	if (sscanf(data, "\033[%hu;%huR", &w.ws_row, &w.ws_col) != 2) {
 		err = 1;
-		fprintf(stderr, "Unable to parse response\n");
+		warnx("unable to parse response");
 		goto out;
 	}