CIF2 syntax document for COMCIFS approval
Ralf W. Grosse-Kunstleve
rwgk at yahoo.com
Mon Dec 27 22:53:49 GMT 2010
After careful consideration I vote "no" on the proposed new CIF syntax,
although I agree with the general direction. I'm deeply concerned about
introducing new syntax for delimiting strings without solving a
long-standing problem. James explained to me that the "extra
multi-line text delimiters are provided to further reduce the likelihood of
running into text that is impossible to delimit." I strongly believe that
the problem needs to be solved completely, for example by adopting the
widely used backslash escape semantics.
I would agree to the proposal after either
- an escape mechanism for the new triple-quoted strings is added or
alternatively
- the new triple-quote syntax is removed, so that it can be introduced
later with an associated escape mechanism.
Ralf
----- Original Message ----
> From: James Hester <jamesrhester at gmail.com>
> To: Discussion list of the IUCr Committee for the Maintenance of the CIF
>Standard (COMCIFS) <comcifs at iucr.org>
> Sent: Tue, November 16, 2010 3:28:32 PM
> Subject: CIF2 syntax document for COMCIFS approval
>
> Dear COMCIFS,
>
> After more than a year of discussion, the DDLm working group has
> converged on a specification for a new CIF syntax, dubbed "CIF2". The
> one-page document describing the changes relative to CIF1 is available
> on the IUCr website at
>http://www.iucr.org/__data/assets/pdf_file/0004/47434/cif2_syntax_changes_jrh20101115.pdf.
>.
> A record of the extensive discussions of the DDLm working group is
> available at http://www.iucr.org/resources/lists/ddlm-group, with
> encoding-specific discussions taking place at
> http://www.iucr.org/resources/lists/cif2-encoding
>
> This CIF2 specification is now presented to COMCIFS for approval. I
> urge all COMCIFS voting members to register their vote in a timely
> fashion.
>
> James Hester
> COMCIFS Chair
> --
> T +61 (02) 9717 9907
> F +61 (02) 9717 3145
> M +61 (04) 0249 4148
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