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Re: ACTION A-220-04

From: James Fuller <jim@webcomposite.com>
Date: Thu, 11 Oct 2012 12:45:27 +0200
Message-ID: <CAEaz5mvcX0aoMawykH9FsXY9rZ-h_aENKxpY3Amw4zNhyz4dgw@mail.gmail.com>
To: Alex Milowski <alex@milowski.com>
Cc: XProc WG <public-xml-processing-model-wg@w3.org>
agree with Alex, will add to v2 requirements doc so we dont forget.

J

On Tue, Oct 9, 2012 at 6:48 PM, Alex Milowski <alex@milowski.com> wrote:
> On Fri, Oct 5, 2012 at 6:56 AM, Toman, Vojtech <vojtech.toman@emc.com> wrote:
>> Hi all,
>>
>> I took a deeper look at ACTION A-220-04
>> (http://lists.w3.org/Archives/Public/public-xml-processing-model-comments/2012Jul/0002.html).
>>
>> It turns out to be more interesting than it seemed at the first glance. The main
>> issue is that on one hand we say that p:when/p:otherwise are just wrappers and
>> not steps, yet at the same time we seem to assume that they behave as compound
>> steps ("If a compound step has no declared outputs and the last step in its
>> subpipeline has an unconnected primary output, ..." etc.). The same applies to
>> p:group/p:catch in p:try.
>>
>> There are two ways of fixing this (both of them require more or less the same
>> amount of changes, but have different implications):
>>
>> 1. Make p:when/p:otherwise in p:choose and p:group/p:catch in p:try compound
>>    steps and get rid of the notion "non-step wrapper". This might require some
>>    tweaks here and there (the definition of what "container" meens for
>>    multi-container steps would have to change), but I think it could work.
>
> I prefer this approach.  I think it makes things more uniform.
>
> I am concerned about the scope of such a change.  It feels like
> something we should fix in 2.0 and attempt to clarify, if possible, in
> the errata.  Whether we can fix it in an errata is unclear to me right
> now.
>
> --
> --Alex Milowski
> "The excellence of grammar as a guide is proportional to the paucity of the
> inflexions, i.e. to the degree of analysis effected by the language
> considered."
>
> Bertrand Russell in a footnote of Principles of Mathematics
>
Received on Thursday, 11 October 2012 10:45:55 GMT

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