Bug removed: the trailing zero at the end of a growstring was not

explicitly written in doassign(trans.c).
Only luck kept the program together.

util/ack/trans.c

@@ -544,6 +544,7 @@ doassign(line,star,length) char *line, *star ; {
 		break ;
 	}
 	gr_throw(&temp) ;
+	gr_add(&name,0) ; gr_add(&varval,0) ;
 	setsvar(gr_final(&name),gr_final(&varval)) ;
 }