MACROEXPAND
if ((*p++ & 0377) == MACROEXPAND)
if (c == MACROEXPAND)
SM_APPEND_CHAR(MACROEXPAND);
buf[1] = MACROEXPAND;
case MACROEXPAND: /* macro interpolation */
if ((*p++ & 0377) == MACROEXPAND && *p == 'u')
case MACROEXPAND:
*p++ = MACROEXPAND;
if (c == MACROEXPAND || c == MACRODEXPAND)