Tom Lane wrote:
> The thing that I was wondering about is the same Joachim mentioned:
> how is it that the regression test ever worked?  The answer is that
> it's not really testing custom variables, because it doesn't try to
> set plperl.use_strict until after plperl has been loaded into the
> current session.

I think that the sole purpose of c_v_c is to allow custom variables in 
the configuration file, because that is possibly read before modules 
are loaded.  Basically it just means that "prefix.*" is not rejected.  
In a session, it doesn't make a difference what c_v_c is set to; the 
variable needs to be registered period.  However, if the registration 
code runs only when the module is invoked for the first time rather 
than at the start of the session (as in the case of plperl), then it's 
apparently impossible to set a variable in a session before the first 
call.  It's all very weird.

Peter Eisentraut

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