I suspect that there is an error in the Turtle specification, in the section shown in the screen-shot.
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I suspect that there is an error in the Turtle specification, in the section shown in the screen-shot.
(It relates to JSON-LD, which ActivityPub / ActivityStreams is built on.)
I suspect that "PN_CHARS_BASE" is an error.
Because other parts of other specifications don't make sense if it is.
I suspect that maybe it should have been "PN_PREFIX" instead.
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? Guest crossposted this topic to General Discussion
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I suspect that there is an error in the Turtle specification, in the section shown in the screen-shot.
(It relates to JSON-LD, which ActivityPub / ActivityStreams is built on.)
I suspect that "PN_CHARS_BASE" is an error.
Because other parts of other specifications don't make sense if it is.
I suspect that maybe it should have been "PN_PREFIX" instead.
PN_LOCAL is exactly what the prose in your screenshot describes. I see no error.
What other parts of other specifications don't make sense?
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PN_LOCAL is exactly what the prose in your screenshot describes. I see no error.
What other parts of other specifications don't make sense?
One example is...
I've seen multiple examples of Blank Node Identifiers (which contain a Blank Node Label after the "_:") that include numerical digits ("0", "1", "2", "3", "4", "5", "6", "7", "8", "9").
PN_CHARS_BASE does not seem to include numerical digits.
Neither does that section "2.6 RDF Blank Nodes" include numerical digits.
Which, assuming I didn't misunderstand something (which is possible), makes the examples I've seen elsewhere not make sense (since they would be invalid).
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One example is...
I've seen multiple examples of Blank Node Identifiers (which contain a Blank Node Label after the "_:") that include numerical digits ("0", "1", "2", "3", "4", "5", "6", "7", "8", "9").
PN_CHARS_BASE does not seem to include numerical digits.
Neither does that section "2.6 RDF Blank Nodes" include numerical digits.
Which, assuming I didn't misunderstand something (which is possible), makes the examples I've seen elsewhere not make sense (since they would be invalid).
I think that's what they mean by:
> The characters _ **and digits** may appear anywhere in a blank node label.
(The first of the three liberlisations in your screenshot.)
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I think that's what they mean by:
> The characters _ **and digits** may appear anywhere in a blank node label.
(The first of the three liberlisations in your screenshot.)
I completely missed that. Thanks for pointing out.
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I completely missed that. Thanks for pointing out.
@reiver @nik Same here. It is really easy to miss. Luckily, this has been improved in the upcoming revised recommendation: https://www.w3.org/TR/rdf12-turtle/#BNodes
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