CTAB
case CTAB:
#define CTL_ECHO(c,q) (!(q) && ((c) == CERASE2 || (c) == CTAB || \
((q) || ((c) != CTAB && (c) != CNL))))
#define CTL_WHITE(c) ((c) == ' ' || (c) == CTAB)
} else if (c == CTAB) {
} else if (c == CTAB) {