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Re: [ddlm-group] Relationship asmong CIF2, STAR,CIF1 and Python. . . .. .

dREL strings and elides have nothing to do with CIF2 syntax.  They are
dREL syntax.  A dREL method is just an ordinary string for the CIF2
parser, and has no special status.

On Sat, Jan 15, 2011 at 2:35 PM, Herbert J. Bernstein
<[email protected]> wrote:
> Dear James,
>
> �Please reread the dREL string quoting specifications.
> Please reread the dREL conventions on elides. �Let's
> settle whether and in what way those items should
> remain in the language.
>
> �Regards,
> � �Herbert
>
> =====================================================
> �Herbert J. Bernstein, Professor of Computer Science
> � Dowling College, Kramer Science Center, KSC 121
> � � � �Idle Hour Blvd, Oakdale, NY, 11769
>
> � � � � � � � � +1-631-244-3035
> � � � � � � � � [email protected]
> =====================================================
>
> On Sat, 15 Jan 2011, James Hester wrote:
>
>> I welcome such analysis, which I believe is likely to lead to no more
>> than a list of useful editorial changes to DDLm related to small
>> changes in syntax since the DDLm draft document was produced.
>>
>> It is not trivial to produce a CIF2 version that is fundamentally
>> unfriendly to DDLm and dREL, given that DDLm and dREL operate at a
>> semantic level and we are producing a syntax document. �Only if our
>> CIF2 syntax were to produce a different infoset (abstract
>> datastructure) could some of the concepts in DDLm and dREL become
>> poorly specified.
>>
>> On Sat, Jan 15, 2011 at 11:02 AM, Bollinger, John C
>> <[email protected]> wrote:
>>>
>>> On Friday, January 14, 2011 2:30 PM, Herbert J. Bernstein wrote:
>>>
>>>> � I would suggest recalling that this CIF2 exercise began with
>>>> tryin to define a DDLm/dREL-friendly version of CIF. �To the best
>>>> of my knowledge, the current DDLm spec is at what is published
>>>> on the IUCr web site under http://www.iucr.org/resources/cif/ddl/ddlm
>>>> with draft documents from August 2008. �I propose that we all
>>>> take the time to review those documents and make a conscious
>>>> effort to decide if we wish to make use of them as a
>>>> base for CIF2 or not. �They contain many points relevant
>>>> to the current discussion.
>>>
>>> This is an eminently reasonable suggestion, and I have endeavored to take
>>> it. �I find I need more time to formulate the results of my analysis, but
>>> they do not lead me to the same conclusion that Herbert has reached, that we
>>> should start over from scratch. �However, we can, perhaps, consider each of
>>> the changes in our current draft, as Herbert prodded us to do, and evaluate
>>> them against this group's mandate and objectives. �We might now draw
>>> different conclusions about some of them.
>>>
>>> I decline to work on this over the weekend, and Monday is a U.S. holiday,
>>> so it will be at least Tuesday before a I respond more fully.
>>>
>>>
>>> Regards,
>>>
>>> John
>>> --
>>> John C. Bollinger, Ph.D.
>>> Department of Structural Biology
>>> St. Jude Children's Research Hospital
>>>
>>>
>>>
>>>
>>> Email Disclaimer: �www.stjude.org/emaildisclaimer
>>>
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>>>
>>
>>
>>
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