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Re: CIF2 syntax document for COMCIFS approval
- To: "Discussion list of the IUCr Committee for the Maintenance of the CIFStandard (COMCIFS)" <comcifs@iucr.org>
- Subject: Re: CIF2 syntax document for COMCIFS approval
- From: "Ralf W. Grosse-Kunstleve" <rwgk@yahoo.com>
- Date: Wed, 29 Dec 2010 19:03:07 -0800 (PST)
- In-Reply-To: <alpine.BSF.2.00.1012272304560.57274@epsilon.pair.com>
- References: <AANLkTi=_Gkw-w7BiSdxfKJzky6PM-NUfM6YKMPRr+vBy@mail.gmail.com><379586.66815.qm@web111405.mail.gq1.yahoo.com><alpine.BSF.2.00.1012271759350.36061@epsilon.pair.com><171298.43971.qm@web111402.mail.gq1.yahoo.com><alpine.BSF.2.00.1012272044190.36061@epsilon.pair.com><778495.11028.qm@web111407.mail.gq1.yahoo.com><alpine.BSF.2.00.1012272304560.57274@epsilon.pair.com>
Hi Herb, I suggest rewriting CHANGE 7, for example: ================================================================== CHANGE 7 NEW Triple-quote delimited strings. The following ASCII sequences delimit the beginning of a string: """ ''' r""" r''' u""" u""" The characters following the delimiter sequence are interpreted with exactly the same algorithm as implemented for triple-quoted strings in the Python programming language version 2 series. In this algorithm, triple-quoted strings are terminated by matching """ or ''' delimiters. For example """He said "His name is O'Hearly".""" r'''In {\bf \TeX} the accents are \' and \".''' Triple-quoted strings provide a reliable mechanism for storing any arbitrary string in a CIF2 file. ================================================================== Eventually the reference to Python could be replaced with a full description of the algorithm, but in my experience such informal descriptions are never as reliable as an actual implementation, in particular one that's been around for many years and is used by millions of people. Ralf ----- Original Message ---- > From: Herbert J. Bernstein <yaya@bernstein-plus-sons.com> > To: Discussion list of the IUCr Committee for the Maintenance of the CIF >Standard (COMCIFS) <comcifs@iucr.org> > Sent: Mon, December 27, 2010 8:05:41 PM > Subject: Re: CIF2 syntax document for COMCIFS approval > > I think we will have enough trouble selling CIF2 at all. > A split recommendation will make it that much harder.
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