LIKE not working as expected

[Robert Simpson]

When searching for values containing a backslash, MySQL is not finding the rows as expected. Here's an example:

create table t (c varchar(50)) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
insert into t values ('test\\test');
select * from t where c like '%\\\\test' escape '\\';

No rows are returned.

Changing the number of escaped backslashes in the "like" expression doesn't help. This is on MySQL 5.1.73 on RedHat.