mkroetzsch added a comment.

> @mkroetzsch I already listed a few of the tools that implement XSD 1.0 style 
> BCE years and I read your answer as to say that you know of no tools that 
> implement XSD 1.1 style BCE years.


Then you misread my answer. Almost all tools that exist today use the 2000 
version of the ISO standard. A prominent example is ECMAScript, and thus all 
JavaScript implementations, and virtually every JavaScript timeline 
implementation. See 
http://www.ecma-international.org/ecma-262/5.1/#sec-15.9.1.15 and the examples 
in the following section to see this. RDF tools are an understandable 
exception, not because people there think one should cling to the old standard, 
but because RDF 1.1 was only standardised in 2014. It is natural that existing 
RDF implementations have more pressing upgrade work to do than to fix BCE date 
handling. I am sure they will all move to the new standard in due course.

It is worth noting that all of the ECMAScript documents use "ISO 8601" to refer 
to "ISO 8601:2000", just like we did in the Wikidata data model specification. 
It seems that most people are not confused by this.

Having dug up ECMA from the Web, I can now also safely say that JSON exports 
should definitely use ISO 8601:2000 dates.

The new situation therefore is: ISO, W3C, and all JavaScript implementations 
vs. a subset of the developers in the WMDE office. I am very unhappy about the 
amount of my time I have to put into digging up for you what the rest of the 
world is thinking. It's a nice position to put yourself in, asking others to 
find specific arguments against your position and assuming you are right if 
they don't have the time or knowledge to do it. Now I am myself far from being 
an expert in JavaScript or even in all details of SPARQL 1.1, but if I don't 
know something I try to find out before taking part in discussions like this.


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To: Smalyshev, mkroetzsch
Cc: Lydia_Pintscher, Denny, Manybubbles, daniel, mkroetzsch, Smalyshev, 
JanZerebecki, Aklapper, jkroll, Wikidata-bugs, Jdouglas, aude, GWicke



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