SEL_EXT_AFTER
#define IS_SEL_EXT_AFTER(scr) ((scr)->mouse_flags & SEL_EXT_AFTER)
if (!ISSET(scr->mouse_flags, SEL_EXT_AFTER)) {
if (!ISSET(scr->mouse_flags, SEL_EXT_AFTER)) {
if (!ISSET(scr->mouse_flags, SEL_EXT_AFTER)) {
if (!ISSET(scr->mouse_flags, SEL_EXT_AFTER)) {
if (!ISSET(scr->mouse_flags, SEL_EXT_AFTER)) {
SET(scr->mouse_flags, SEL_EXT_AFTER);
if (ISSET(scr->mouse_flags, SEL_EXT_AFTER)) {
CLR(scr->mouse_flags, SEL_EXT_AFTER);