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Re: [ddlm-group] THREAD TRIPLE QUOTES - Specification

The main value of the treble quoted string is that it allows a much
neater presentation of examples of chunks of CIFS and text in which
presenting such information within semi-colon quoted strings gets
somewhat confusing.

For this reason, I would suggest that the most important test of
Nick's suggestions would be how faithfully a semi-colon delimited
example could be included with _no_ added or subtracted characters,
so that people reading dictionaries by eye will reproduce those
examples correctly.

For that reason, I hope we can stay as close to """ and ''' delimiting
truly raw data as possible.


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


On Fri, 11 Sep 2009, Nick Spadaccini wrote:

> Our last discussion on the implementation of triple quoted strings resulted
> in much to-ing and fro-ing and in the end the conclusion was that its
> behaviour was to be identical to the semi-colon delimited strings. I
> preferred a greater degree of parsing of the string but this was not
> popular.
> Now our illustrious chair, who sits next to me now, asks the question "what
> is the point of the triple quoted string", to which I can only shrug my
> shoulders. The triple quote string will be useful for containing strings
> that include ", ' and ; (in the first character in a record). They will of
> course fail when you attempt to include the sequence """. Hence they are no
> different to a ; delimited string that cannot include a ; as the first
> character of a line.
> Here is a suggestion. The triple quote string (delimited by """) will treat
> its contents a raw, except that
> (a) When writing the string, ALL quotes contained within will have a space
> inserted immediately after the " character. This will allow the triple quote
> to be contained within the string by breaking the sequence with spaces so
> the tokeniser is not fooled in to terminating the string. Clearly the
> reverse operation is required in reading the string. I this way is is
> possible to include all manner of text, markup and programming scripts
> within a triple quoted string.
> (b) We will formally accept in this string the "eliding" of the newline
> character. Hence a reverse solidus (\) immediately prior to the record
> terminating character(s) will imply the \ and the record terminating
> characters are deleted from the stream, and the next line is wrapped around.
> To allow for the odd case when one want's to literally include the \ and the
> record terminating character(s) in the string then the required \ will be
> elided.
> In parsing the contents of a string the only things required are
> (1) delete one of the spaces after every "
> (2) treat \<newline> as a wrap around
> (3) treat \\<newline> as the raw string \<newline>
> All other characters are left as is.
> cheers
> Nick
> --------------------------------
> Associate Professor N. Spadaccini, PhD
> School of Computer Science & Software Engineering
> The University of Western Australia    t: +61 (0)8 6488 3452
> 35 Stirling Highway                    f: +61 (0)8 6488 1089
> CRAWLEY, Perth,  WA  6009 AUSTRALIA   w3: www.csse.uwa.edu.au/~nick
> MBDP  M002
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> e: Nick.Spadaccini@uwa.edu.au
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