wadd_wch_literal
static int wadd_wch_literal(WINDOW *, cchar_t);
if (wadd_wch_literal(win, blank) == ERR)
return wadd_wch_literal(win, ch);
if (wadd_wch_literal(win, blank) == ERR)
if (wadd_wch_literal(win, sch) == ERR)