I've just uploaded a new version of the RDF Templates 1.0 spec, with a couple of minor changes suggested by Daniel Biddle. The first was to make the absence of a literal value in a specifier more obvious by using an asterisk instead of an empty parameter. So, whereas before you would use this to match a literal s with any value but a language of 'fr':

literal(, 'fr')

you should now use this:

literal(*, 'fr')

I agreed with Daniel that this made the intention clearer (i.e. any value for the literal).

Daniel's second proposal was to allow any language from RFC3066 as part of the literal specifier. Instead of taking this direct route I instead specified that the language code could be any language code as specified in Section 6.5 of the RDF Concepts document which ties the RDFT spec closer to the RDF ones.

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