BEGIN { 
	print "/* this has had hackyacc run on it */"
	found = 0; 
	printing = 1;
    }
/typedef union/ {
	if (!found) {
	    printing = 0;
	}
	found = 1;
    }
    {
	if (printing) print $0
    }
/LASTTOKEN/ {
    printing = 1;
    print "\n/* this is the start of hackyacc modifications */"
    print "#include \"y.tab.h\""
    print "/* this is the end of modifications */\n"
    }