Here is a new patch set:
0001: This introduces the \sendpipeline meta-command and forbid \g in
a pipeline. This is to fix the formatting options of \g that are not
supported in a pipeline.
0002: Allows ';' to send a query using extended protocol when within a
pipeline by using PQsendQueryParams with 0 parameters. It is not
possible to send parameters with extended protocol this way and
everything will be propagated through the query string, similar to a
simple query.
