MOUSE_START_CODE
if ((code & MOUSE_START_CODE) == 0)
if (code & MOUSE_START_CODE) {
if (code & MOUSE_START_CODE) {
if (code & MOUSE_START_CODE) {
if ((code & MOUSE_START_CODE) == 0)
if (r > 1 && !(bufp[0] & MOUSE_START_CODE) &&
!(bufp[1] & MOUSE_START_CODE)) {
if (r > 0 && !(bufp[0] & MOUSE_START_CODE))