[Standards] the meaning of "MUST be empty"
Guus der Kinderen
guus.der.kinderen at gmail.com
Tue Jun 19 12:13:48 UTC 2018
On Tue, 19 Jun 2018 at 13:47, Kevin Smith <kevin.smith at isode.com> wrote:
> On 19 Jun 2018, at 12:09, Bartłomiej Górny <
> bartlomiej.gorny at erlang-solutions.com> wrote:
> > Hi
> > If a XEP states that an attribute "MUST be empty", does it mean that it:
> > a) must be present and have a value ""
> > b) must not be there
> > c) can be either of the two
> > The question arose because of XEP-0313, which in point 5.1.2 says:
> > "When sending out the archives to a requesting client,
> > the 'to' of the forwarded stanza MUST be empty"
> > and then gives an example where forwarded stanzas have no 'to'
> attribute. We just hit a situation where there are conflicting
> implementations, and we want to sort it out The Right Way, hence the
> Sounds like we messed up the text, sorry. The right thing is to not
> include a to, rather than including a to=“” (which is illegal).
Is it (illegal)? It's valid in XML 1.0 and XML 1.1, if my Google skills are
not failing me. Differentiating between not having a to attribute, and
having a to attribute with an empty value seems needlessly complicated to
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