VTERM_ATTR_UNDERLINE
state->pen.underline = 0; setpenattr_int( state, VTERM_ATTR_UNDERLINE, 0);
setpenattr_int( state, VTERM_ATTR_UNDERLINE, state->pen.underline);
setpenattr_int(state, VTERM_ATTR_UNDERLINE, 1);
setpenattr_int(state, VTERM_ATTR_UNDERLINE, 2);
setpenattr_int(state, VTERM_ATTR_UNDERLINE, 0);
case VTERM_ATTR_UNDERLINE:
case VTERM_ATTR_UNDERLINE:
case VTERM_ATTR_UNDERLINE: return VTERM_VALUETYPE_INT;