Re: Fixing error in Turtle and Trig grammars

On Feb 13, 2014 5:35 AM, "Paul Gearon" <gearon@ieee.org> wrote:
>
> While looking at this document, I notice that the production for the
DOUBLE terminal has a typo:
>
> [21]
> DOUBLE
> ::=
> [+-]? ([0-9]+ '.' [0-9]* EXPONENT | '.' [0-9]+ EXPONENT | [0-9]+
>
> Should be:
>
> [21]
> DOUBLE
> ::=
> [+-]? ([0-9]+ '.' [0-9]* EXPONENT | '.' [0-9]+ EXPONENT | [0-9]+ EXPONENT)

Yes, there was an unfortunate paste-o in the Proposed Recommendation. Your
diligence is appreciated.

> Regards,
> Paul Gearon
>
>
>
> On Wed, Feb 12, 2014 at 3:42 PM, Eric Prud'hommeaux <eric@w3.org> wrote:
>>
>> The RDF Working Group recently discovered an error in the grammars for
>> Turtle and TriG. They were intened to align with SPARQL, but a pair of
>> parentheses was accidentally dropped from the definition for long
>> strings resulting in an over-constraint on what's permitted after
>> embedded quotes. An example of the error is shown by the text
>>
>>    """ ""\" """
>>
>> which is allowed by the SPARQL grammar, but was accidentally
>> disallowed by the grammars for Turtle and TriG in their specifications.
>> After considering this matter, the acting W3C Director has asked us to
>> make sure implementors agree this is an error and will in the coming
>> weeks make sure their implementations parse the intended language,
>> aligned with SPARQL.
>>
>> Please let us know by 18 Feb if you intend to implement the following
>> grammar and parse the syntax tests below:
>>
>> change
>> [24] STRING_LITERAL_LONG_SINGLE_QUOTE ::= "'''" (("'" | "''")? [^'\] |
ECHAR | UCHAR)* "'''"
>> [25] STRING_LITERAL_LONG_QUOTE          ::= '"""' (('"' | '""')? [^"\] |
ECHAR | UCHAR)* '"""'
>> to
>> [24] STRING_LITERAL_LONG_SINGLE_QUOTE ::= "'''" (("'" | "''")? ([^'\] |
ECHAR | UCHAR))* "'''"
>> [25] STRING_LITERAL_LONG_QUOTE          ::= '"""' (('"' | '""')? ([^"\]
| ECHAR | UCHAR))* '"""'
>>
>> and parse these (one-line) turtle documents (with some arbitrary base
URI):
>>
>> <s> <p> ''' ''\' ''' .
>>
>> <s> <p> """ ""\" """ .
>>
>> <s> <p> """ ""\u0061 """ .
>>
>> <s> <p> """""\"""" .
>>
>> <s> <p> """""\u0061""" .
>>
>>
>> Many thanks for your help and continued support of RDF 1.1.
>>
>> --
>> -ericP, on behalf of the RDF Working Group
>>
>> office: +1.617.599.3509
>> mobile: +33.6.80.80.35.59
>>
>> (eric@w3.org)
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>>
>> There are subtle nuances encoded in font variation and clever layout
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>>
>