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Normalized language tags. #2039

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afs opened this issue Oct 13, 2023 · 0 comments · Fixed by #2134
Closed

Normalized language tags. #2039

afs opened this issue Oct 13, 2023 · 0 comments · Fixed by #2134
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afs commented Oct 13, 2023 •
edited

In RDF 1.1, it says that language tags are compared case insensitively and also that "Lexical representations of language tags MAY be converted to lower case." It is in RDF semantics as D-entailment.

The issue has come to prominence because of work on RDF canonicalization and hashing (RCH) which works on the syntax of graphs. Signing and Verifiable Credentials than rely on RCH. So syntax matters, not the value.

Jena5 will switch to normalized language tags. e.g. "en-GB"
Data should be reloaded to be safe.

https://lists.apache.org/thread/l6trf46ko83vdg3hfzgrvbhgcotzv4xc (2023-09-28)

NB Canonicalization of language tags is different - that involves , for example, replacing the country code with the preferred code.

The correct termninology from BCP47/RFC5646 is "format".
@afs afs added the Jena5 Changes relating to Jena5 label Oct 13, 2023
@afs afs self-assigned this Oct 13, 2023
This was referenced Oct 15, 2023
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@afs afs mentioned this issue Dec 9, 2023
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afs added a commit to afs/jena that referenced this issue Dec 9, 2023
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apacheGH-2039: Case insensitive langtags
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afs added a commit to afs/jena that referenced this issue Dec 23, 2023
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apacheGH-2039: Case insensitive langtags
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afs added a commit to afs/jena that referenced this issue Dec 24, 2023
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apacheGH-2039: Case insensitive langtags (initial)
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afs added a commit to afs/jena that referenced this issue Dec 24, 2023
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apacheGH-2039: Case insensitive langtags (ARQ)
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afs added a commit to afs/jena that referenced this issue Dec 24, 2023
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apacheGH-2039: Case insensitive langtags
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@afs afs mentioned this issue Dec 24, 2023
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afs added a commit to afs/jena that referenced this issue Dec 26, 2023
@afs
apacheGH-2039: Case insensitive langtags (initial)
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afs added a commit to afs/jena that referenced this issue Dec 26, 2023
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apacheGH-2039: Case insensitive langtags
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afs added a commit to afs/jena that referenced this issue Dec 26, 2023
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apacheGH-2039: Case insensitive langtags
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@afs afs closed this as completed in #2134 Dec 27, 2023
afs added a commit that referenced this issue Dec 27, 2023
@afs
GH-2039: Case insensitive langtags (initial)
74a134d
afs added a commit that referenced this issue Dec 27, 2023
@afs
GH-2039: Case insensitive langtags
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cnanjo pushed a commit to fhircat/jena that referenced this issue Mar 2, 2024
@afs @cnanjo
apacheGH-2039: Case insensitive langtags (initial)
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cnanjo pushed a commit to fhircat/jena that referenced this issue Mar 2, 2024
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apacheGH-2039: Case insensitive langtags
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Case-insensitive language tags afs/jena
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