BUG #12597 This is a complete patch (2nd) containing fixes per Serg's review

mysql-test/t/mysqldump.test

@@ -761,3 +761,38 @@ show tables;
 --replace_column 6 #
 show triggers;
 DROP TABLE t1, t2;
+
+# Test of fix to BUG 12597
+DROP TABLE IF EXISTS `test1`;
+CREATE TABLE `test1` (
+  `a1` int(11) default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+
+DROP TABLE IF EXISTS `test2`;
+CREATE TABLE `test2` (
+  `a2` int(11) default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+
+DELIMITER //;
+CREATE TRIGGER `testref` BEFORE INSERT ON `test1` FOR EACH ROW BEGIN
+INSERT INTO test2 SET a2 = NEW.a1; END  //
+DELIMITER ;//
+
+INSERT INTO `test1` VALUES (1);
+SELECT * FROM `test2`;
+
+# dump
+--exec $MYSQL_DUMP --skip-comments --databases test > var/tmp/mysqldump.sql
+
+#DROP TRIGGER testref;
+#DROP TABLE test1;
+#DROP TABLE test2;
+# restore
+--exec $MYSQL test < var/tmp/mysqldump.sql
+SHOW TRIGGERS;
+SELECT * FROM `test1`;
+SELECT * FROM `test2`;
+
+DROP TRIGGER testref;
+DROP TABLE test1;
+DROP TABLE test2;