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Re: [ddlm-group] Summary of proposed CIF syntax changes

I agree that a "rationale for all of the quotation rule
changes" might be welcome - I can imagine that at first glance many people
will wonder what the """ and ''' are for.

I'm not sure that hinting that comma-separated lists
are also a possibilty is going to help matters?
Afterall, when it comes down to it, until there are
dictionaries that comply to CIF2, many disciplines
that already make use of CIF will find it difficult to
adopt CIF2 because their current dictionaries will be invalidated by
the restrictions on the dataname character set?

Cheers

Simon



From: Joe Krahn <krahn@niehs.nih.gov>
To: Group finalising DDLm and associated dictionaries <ddlm-group@iucr.org>
Sent: Friday, 4 December, 2009 17:49:01
Subject: Re: [ddlm-group] Summary of proposed CIF syntax changes

The summary did not include a rationale for all of the quotation rule
changes, which is the area that makes the least sense to me.

The section defining the rationale for not allowing lexical characters
outside the 7-bit range (the first Reasoning paragraph) might mention
that it affords faster parsing by deferring any UTF-8 conversions.

I see that the commas were left out of the list syntax. It may be good
to put a short paragraph about the alternative comma-delimited syntax,
so that other people reviewing the proposal have a chance to comment.

Thanks,
Joe Krahn
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