Dimitri Fontaine <dimitri(at)2ndQuadrant(dot)fr> writes:
> Another compromise might be to allow for defining variable in any class
> from the configuration files but restrict that to existing classes from
> the SET command. Wait, that's exactly what happens as soon as there's
> no explicit custom_variable_classes, right?
No, because there are people who do intentionally use placeholder
variables as session-local storage, and that would be taking away
that capability.
regards, tom lane