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Re: [ddlm-group] Updated draft from subgroup discussing encodings. .
- To: Group finalising DDLm and associated dictionaries <ddlm-group@iucr.org>
- Subject: Re: [ddlm-group] Updated draft from subgroup discussing encodings. .
- From: "Bollinger, John C" <John.Bollinger@STJUDE.ORG>
- Date: Mon, 11 Oct 2010 09:32:37 -0500
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On Saturday, October 09, 2010 6:24 AM, Herbert J. Bernstein wrote: >The change in the handling of an underscore in a tag name (requiring at least one more character) is a good idea in any case (whether or not the use for cancatenation is adopted). I suggest we put that change to a vote promptly and separately. [...] >On Sat, 9 Oct 2010, SIMON WESTRIP wrote: [...] >> On a related point, the draft spec states: >> >> "A data name begins with an ASCII _ and may be followed by any number >> of characters within the 2048 character restriction." >> >> I think this should read: >> >> "A data name begins with an ASCII _ and is followed by one or more >> characters within the 2048 character restriction." >> >> Or words to that effect - especially if the underscore is adopted as >> an operator. I don't think that's a change relative to CIF 1. The formal grammar gives this production for <Tag>: '_'{ <NonBlankChar>}+ Thus, either a lone underscore is not a valid tag / data name in CIF1, or the formal grammar must be held to be in error. I have always taken the formal grammar to be definitive in cases such as this one -- that's its purpose, after all. If a vote is called on this topic then I will vote in favor. I think it could also be handled simply as an editorial correction, however. Regards, John -- John C. Bollinger, Ph.D. Department of Structural Biology St. Jude Children's Research Hospital Email Disclaimer: www.stjude.org/emaildisclaimer _______________________________________________ ddlm-group mailing list ddlm-group@iucr.org http://scripts.iucr.org/mailman/listinfo/ddlm-group
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- References:
- [ddlm-group] Updated draft from subgroup discussing encodings (James Hester)
- Re: [ddlm-group] Updated draft from subgroup discussing encodings (SIMON WESTRIP)
- Re: [ddlm-group] Updated draft from subgroup discussing encodings (Herbert J. Bernstein)
- Re: [ddlm-group] Updated draft from subgroup discussing encodings (SIMON WESTRIP)
- Re: [ddlm-group] Updated draft from subgroup discussing encodings (Herbert J. Bernstein)
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