[PATCH] resolv: Avoid duplicate query if search list contains '.' (option 2)

[Florian Weimer]

* Carlos Peon Costa:

> Setting the legacy "domain" option adds the specified domain to the
> search list, so to disable search list processing IMO the only
> configuration option needed is
>
> search .
>
> To be honest I don't know what other stub resolvers are already doing.
> I'm trying to address the case where the same query is performed
> twice, once "as_is" and another one appending then "." domain that
> effectively does not modify the original query.

I think the traditional assumption is that "." in the search list is
unsuported and should be removed.  I checked the documentation of
multiple implementations, and no one seems to document the intended
behavior of ".".

Are you using "." to suppress search list processing?

Thanks,
Florian