SHIFT7BIT
(SHIFT7BIT((c)) ? -1 : (((ei)->cell[(c)] & EI_MASK) - 1))
#define ISDIRECT(ei, c) (!SHIFT7BIT((c)) && (ISSPECIAL((c)) || \
#define ISSAFE(ei, c) (!SHIFT7BIT((c)) && (ISSPECIAL((c)) || \
if (SHIFT7BIT((int)psenc->ch[i]))