input_init
pd->ictx = input_init(NULL, NULL, &pd->palette, NULL);
pd->ictx = input_init(NULL, job_get_event(pd->job),
struct input_ctx *input_init(struct window_pane *, struct bufferevent *,
data->ictx = input_init(NULL, NULL, NULL, NULL);
wp->ictx = input_init(wp, wp->event, &wp->palette, NULL);