CHARMASK
key = *m1 & CHARMASK;
return c <= CHARMASK ? c : (c & CHARMASK);
c &= CHARMASK; /* strip command prefix */
: x_tab[x_curprefix][c&CHARMASK];
macroptr = x_atab[c>>8][c & CHARMASK];
#define X_TABSZ (CHARMASK+1) /* size of keydef tables etc */
f = x_tab[0][c&CHARMASK];