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Re: [ddlm-group] Fwd: Fwd: Searching for a compromise on eliding. .. .

Dear Herbert,

Your G example is highly unlikely to be necessary in practice, which is one reason I've started
to see the merits of alternative delimters that don't share a character with other delimiters and that are
unlikely to form part of a CIF data value.

Cheers

Simon




From: Herbert J. Bernstein <yaya@bernstein-plus-sons.com>
To: Group finalising DDLm and associated dictionaries <ddlm-group@iucr.org>
Sent: Monday, 28 February, 2011 19:34:48
Subject: Re: [ddlm-group] Fwd: Fwd: Searching for a compromise on eliding. . . .

The prudent thing to do is to double every backslash you want taken
verbatim, whether it is at the end of a line or not.  One nice aspect
of P and P-prime is that you get in the habit of eliding the quote
marks as well, as in

"""This is an example of \"\"\"treble quoting\"\"\""""

even though

"""This is an example of \"""treble quoting""\""""

is sufficient.  It keeps your visual clues more local.  I would suggest
that those considering the merits of P and P-prime versus G and F', consider
that in GP, the above would appear in F' as

"""This is an example of ""\
"treble quoting""\
"\
"""

and the similar G statement would be

``This is an example of `\
`G quoting`\
`\
``

which seems somewhat less clear than the more Pythonesque P, P-prime and
F one-liners



At 12:29 PM -0600 2/28/11, Bollinger, John C wrote:
>On Monday, February 28, 2011 12:16 PM, I wrote:
>
>>F and GP would require backslash doubling when a literal backslash
>>appears at the end of a line, and also when a literal
>>double-backslash appears anywhere (in which case both backslashes
>>would need to be doubled, \\ -> \\\\).
>
>Correction: F and GP would require backslash doubling when a literal
>backslash appears at the end of a line.  In addition, given any
>sequence of n + 1 literal backslashes (n >= 0), the first n of them
>must be doubled, but doubling the last is optional unless it appears
>at the end of the line.
>
>John
>
>--
>John C. Bollinger, Ph.D.
>Department of Structural Biology
>St. Jude Children's Research Hospital
>
>
>
>
>Email Disclaimer:  www.stjude.org/emaildisclaimer
>
>_______________________________________________
>ddlm-group mailing list
>ddlm-group@iucr.org
>http://scripts.iucr.org/mailman/listinfo/ddlm-group


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                  yaya@dowling.edu
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