Hello Jernej, Joe, Thank you for confirming the behaviour.
Balázs and I came to the same conclusion offline on digging further. I will create a patch in pyang to refine the man page. Regards, Sid From: Jernej Tuljak <[email protected]> Sent: Friday, 25 April 2025 15:18 To: Balázs Lengyel <[email protected]>; NetMod WG <[email protected]> Cc: Siddharth Sharma <[email protected]> Subject: Re: [netmod] Why is deref() not allowed in yang --strict You don't often get email from [email protected]<mailto:[email protected]>. Learn why this is important<https://aka.ms/LearnAboutSenderIdentification> Hi, pyang has "deref()" support for YANG version 1 (RFC 6020), which is non-standard. This option already existed before YANG version 1.1 (RFC 7950) and makes pyang RFC 6020 compliant. A quick search of the code base at master Git branch suggests "strict" is used only when checking "deref()" inside YANG version 1 modules ("pyang/xpath.py", lines 165 - 168 [1]). The text: "Currently this checks that the deref() function is not used in XPath expressions and leafrefs." is somewhat misleading, because it is always an error to use "deref()" in a "path" expression, which pyang properly reports as a syntax error, regardless of this option's presence (at least the version I have access to does). [1] https://github.com/mbj4668/pyang/blob/167bcda44556fc5285c782b0a4e3452f6d5b0bf8/pyang/xpath.py#L165 Jernej On 25/04/2025 10:36, Balázs Lengyel wrote: Hello, The pyang man contains the following: --strict Force strict YANG compliance. Currently this checks that the deref() function is not used in XPath expressions and leafrefs. Why is deref() singled out? It is a standard part of YANG 1.1. RFC7950. Why would it not be strictly YANG compliant? Does the –strict option check anything else beyond deref() Any help appreciated. Regards Balazs _______________________________________________ netmod mailing list -- [email protected]<mailto:[email protected]> To unsubscribe send an email to [email protected]<mailto:[email protected]>
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