Re: Action syntax/semantics

Fabian Keil <[email protected]> Sun, 12 Apr 2015 12:45:30 +0200
Newsgroups	gmane.comp.web.privoxy.devel
Message-ID	<[email protected]>
Gregory Seidman <[email protected]> wrote:

> I'm working on a Firefox addon to reimplement Privoxy functionality.
> Yes, I know there are various addons that do various things Privoxy
> does, but my goal is to be able to import/export valid Privoxy .action
> and .filter files (though, of course, external filters and a few actions
> can't be supported). To do so, I need to be sure I understand the syntax
> and semantics. So, some questions:
> 
> - Does any action OPTIONALLY take a parameter? In particular, is the
>   parameter to the block action required?

In general, parameters are documented to be required but for some
actions missing parameters will merely result in an error message
but are otherwise accepted for backwards compatibility.

The block action is (currently) one of them, but this may change
in the future (as the block reason was introduced years ago).

> - Can action aliases take a parameter? I think the answer is no...

That's currently correct.
 
> - The filter (also external-filter, but I can't support that),
>   crunch-client-header, client-header-filter, client-header-tagger,
>   crunch-server-header, server-header-filter, and server-header-tagger
>   actions all claim to be "Parameterized" in the documentation
>   <http://www.privoxy.org/user-manual/actions-file.html>, but aren't they
>   actually "Multi-value" in that more than one filter or tagger of the
>   same type (but with different parameters) can be applied to a matched
>   connection?

Indeed. Thanks for pointing this out, I'll look into fixing this.

Fabian

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