Re: Questions regarding RFC 5228

Arnt Gulbrandsen wrote:

> Stephan Bosch writes:
>
> > Hello,
> >
> > I am finishing up a first release of my Sieve implementation, and one 
> > of the TODO items that yet remains is getting some answers to 
> > questions that arose during development. I've collected these into a 
> > file an now I submit them to this list to get some clarification. Any 
> > help is greatly appreciated.
> > * RFC 5228 (Sieve) : 5.1.  Test address:
> > "Implementations MUST restrict the address test to headers that 
> > contain addresses, but MUST include at least From, To, Cc, Bcc, 
> > Sender, Resent-From, and Resent-To, and it SHOULD include any other 
> > header that utilizes an "address-list" structured header body."
> >   -> Will this cause a compile error, or are the disallowed headers 
> >  simply ignored? My implementation currently considers this to be a 
> >  compile error.
> So does mine.
My implementation allows "address" on any header - it will just try to 
parse it as an email address.
> > -> Given the variables extension, sometimes the specified header 
> > names aren't known until runtime. If the previous answer was to cause 
> > a compile error, should this abort the script at runtime?
> I don't have variables (yet?). I expect that I would try to give an 
> error at compile time and to avoid runtime errors.
How would you do that if you supported variables? Are you just going to 
reject the second parameter because it contains a variable reference?