t = utf; utf = alt_utf; alt_utf = t;
static void swap_screen(int which){    int t;    tree234 *ttr;    if (which == alt_which)	return;    alt_which = which;    ttr = alt_screen;    alt_screen = screen;    screen = ttr;    t = curs.x;    curs.x = alt_x;    alt_x = t;    t = curs.y;    curs.y = alt_y;    alt_y = t;    t = marg_t;    marg_t = alt_t;    alt_t = t;    t = marg_b;    marg_b = alt_b;    alt_b = t;    t = dec_om;    dec_om = alt_om;    alt_om = t;    t = wrap;    wrap = alt_wrap;    alt_wrap = t;    t = wrapnext;    wrapnext = alt_wnext;    alt_wnext = t;    t = insert;    insert = alt_ins;    alt_ins = t;    t = cset;    cset = alt_cset;    alt_cset = t;    t = sco_acs;    sco_acs = alt_sco_acs;    alt_sco_acs = t;    fix_cpos;}