#if	0
static UWORD build_special_case( DFA dfa, UBYTE ch, UWORD old_state)
{
	static UBYTE states[] = "0123456789abcdefABCDEF\t\n";
	UWORD * state, length;
	STRPTR  set = states;

		switch( ch )
		{
			case 'd': length = 10; break;
			case 'x': length = 22; break;
			case 't': length = 1;  set = states+22; break;
			case 'n': length = 1;  set = states+23; break;
			default:  return 0;
		}
		if( !add_state(dfa) ) return 0;
		/* Set multiple states at once */
		while( length-- )
		{
			state = &current->state[ *set++ ];
			
			if( *state == 0 )
			{
				*state = dfa->nb_state-1;
			}
			else return 0;
		}
	}
	return 0;
}
#endif