Found it. Bug 26395 described at
http://dev.mysql.com/doc/refman/5.0/en/releasenotes-es-5-0-56.html
On Wed, May 7, 2008 at 2:39 PM, Mark Callaghan <mcallaghan@stripped>
wrote:
> I thought I read a CL for a bug fix that stated that auto-commit events
> would be encoded differently as of a new MySQL 5.0 release. The new encoding
> is to always wrap the SQL statement with binlog events for BEGIN and COMMIT.
> Is that the case, and if so, in which release does this change occur?
>
> --
> Mark Callaghan
> mcallaghan@stripped
--
Mark Callaghan
mcallaghan@stripped