Re: What is a "virtual" group?

[Lars Ingebrigtsen <larsi@gnus.org>]

Dave Abrahams <dave@boostpro.com> writes:

> * Is the "has a different group or groups backing it" part essential to
>   nnvirtual, or is it really more about "has no real backing store of
>   its own?"

It's more the former.  It's a group that's used to access data from a
different backend.

> * Suppose I write a function that takes a group as a parameter.  How
>   does virtual-ness affect what my function should expect to be able to
>   do with that group?  Are there certain operations that should be
>   valid or invalid because of the group's virtual-ness?

It's possible.  Grep for "virtual".

> * Should an nndoc group be considered virtual?

No.

> * Does the check for virtual-ness in gnus-warp-to-article actually
>   belong there?  After all, real groups shouldn't implement the
>   warp-to-article backend function, should they?

I don't know.

-- 
(domestic pets only, the antidote for overdose, milk.)
  http://lars.ingebrigtsen.no  *  Lars Magne Ingebrigtsen