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Re: [netmod] Potential additions to rfc6087bis: RegEx guidelines

Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Tue, 29 August 2017 07:51 UTC

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Date: Tue, 29 Aug 2017 09:51:12 +0200
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Benoit Claise <bclaise@cisco.com>
Cc: Xufeng Liu <Xufeng_Liu@jabil.com>, Per Hedeland <per@tail-f.com>, Ladislav Lhotka <lhotka@nic.cz>, "'netmod@ietf.org'" <netmod@ietf.org>, "Pieter Lewyllie (pilewyll)" <pilewyll@cisco.com>
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Subject: Re: [netmod] Potential additions to rfc6087bis: RegEx guidelines
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On Tue, Aug 29, 2017 at 09:39:05AM +0200, Benoit Claise wrote:
> In this discussion, let's keep in mind that the openconfig modules use the
> POSIX regex while the IETF uses the W3C regex.
> So for operators that have to deal with a mix of openconfig and IETF
> modules, this type of advice could be handy from a tooling point of view.
> Such advice, if not in RFC6087bis, could be provided in the yangre tool or
> in its GUI equivalent: https://yangcatalog.org/yangre

But we might make things worse. POSIX regex != XSD regex and trying to
make them look more similar likely worsens the confusion by making it
even more subtle that there are differences. From this perspective,
using \d instead of [0-9] is actually a good thing.

/js

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

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