Comment 18 for bug 1548745

Test case, demonstrating the issue. Load it, then check content of audit log:

sveta@Thinkie:~/build/ps-5.7/mysql-test$ mysqlmtr -P13001 test <test1.sql
foobar
t\t
sveta@Thinkie:~/build/ps-5.7/mysql-test$ tail var/mysqld.1/data/audit.log
...
{"audit_record":{"name":"Query","record":"277737_2016-12-19T21:39:32","timestamp":"2016-12-19T21:47:34 UTC","command_class":"select","connection_id":"169","status":0,"sqltext":"select 't ' as foobar","user":"root[root] @ localhost [127.0.0.1]","host":"localhost","os_user":"","ip":"127.0.0.1","db":"test"}}

Bug is repeatable with Percona Server