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

I am sorry to hear this.

For what its worth, although I assume CIF2 syntax as proposed to COMCIFS would be
compliant with STAR syntax (which I have assumed was due to be revised shortly to
introduce the new delimiters/list structures etc.), it would be useful to clarify the
extent of the relationship, so that we do not find ourselves discussing features that
conflict with this relationship.

For example, I can see the introduction of new delimiters such as r""" conflicting with STAR,
but does a proposal such as the line-folding protocol also conflict with STAR, or is
the relationship such that they share the same syntax as far as the lexer is concerned, and
so the line-folding protocol does not break the relationship?

Who knows?

Cheers

Simon

From: Herbert J. Bernstein <yaya@bernstein-plus-sons.com>
To: Group finalising DDLm and associated dictionaries <ddlm-group@iucr.org>
Sent: Thursday, 13 January, 2011 17:17:41
Subject: [ddlm-group] Relationship asmong CIF2, STAR, CIF1 and Python

James has requeested that I formally send a message to this list
about a matter discussed recently in independent email in order
to ensure a record.  At first I declined to do so, but after
reflection, I have decided to do as James has asked.

I have withdrawn my vote in COMCIFS in support of CIF2 going
forward at this time.  I have done so because, after emails
from Nick and Brian, it has become clear to me that I was
making false assumptions about the relationship between
CIF2 and STAR.  I believe that a zero-based discussion is
now needed on what the relationship should be among CIF2,
STAR, CIF1 and Python to best serve the interests
of the crystallographic community.  I do not know what
is best and do not know how long such a discussion may take.
I leave it to James, Nick and Brian to decide if Nick's and
Brian's messages should be posted on this list for the record.

=====================================================
  Herbert J. Bernstein, Professor of Computer Science
    Dowling College, Kramer Science Center, KSC 121
        Idle Hour Blvd, Oakdale, NY, 11769

                  +1-631-244-3035
                  yaya@dowling.edu
=====================================================

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