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Re: [netmod] Alexey Melnikov's Discuss on draft-ietf-netmod-module-tags-07: (with DISCUSS)

Schönwälder, Jürgen <J.Schoenwaelder@jacobs-university.de> Tue, 18 February 2020 11:20 UTC

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From: "Schönwälder, Jürgen" <J.Schoenwaelder@jacobs-university.de>
To: "Rob Wilton (rwilton)" <rwilton@cisco.com>
CC: "netmod@ietf.org" <netmod@ietf.org>
Thread-Topic: [netmod] Alexey Melnikov's Discuss on draft-ietf-netmod-module-tags-07: (with DISCUSS)
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Date: Tue, 18 Feb 2020 11:19:57 +0000
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Subject: Re: [netmod] Alexey Melnikov's Discuss on draft-ietf-netmod-module-tags-07: (with DISCUSS)
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On Tue, Feb 18, 2020 at 11:12:47AM +0000, Rob Wilton (rwilton) wrote:
> 
> I'm also not convinced of how many implementations would properly honour the XML regex property categories, e.g., if the pattern statement has been translated to another regex engine.
>

That's a weird argument. If there is agreement on a restriction and we
can express that restriction in a pattern, we should IMHO do so.

Note the order: It is backwards if there is first a pattern and as a
consequence we agree on that specific restriction.

Ideally, the agreed upon restriction is stated in the description and
if possible also expressed as a pattern. This way it does not matter
how implementations enforce the restriction and it is clear to
everyone what the pattern is trying to achieve.

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103         <https://www.jacobs-university.de/>

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