Disable CRNL for terminal

libduck/libduck.c

@@ -38,6 +38,7 @@ void configure_duck(void)
 	       err(EXIT_FAILURE, "tcgetattr failed");
 	  }
 	  cfsetospeed(&tio, DUCK_BAUD);
+	  tio.c_oflag &= ~ONLCR;
 	  
 	  if (tcsetattr(duckfd, TCSANOW, &tio)) {
 	       err(EXIT_FAILURE, "tcsetattr failed");