[wg-camlp4] My uses of syntax extension

[Gerd Stolpmann]

Am 28.01.2013 18:07:02 schrieb(en) Leo White:
>> You would probably want to have "$$" => "$" to escape it, and
>> something similar for "<:" and ">>".
>> 
>> I think you have two sets of alternative levels, i.e. "even" and  
>> "odd" levels, $...$ can only appear in "even" levels, and  
>> <:...<...>> in "odd" levels, so you only need to escape delimiters  
>> in the levels where they can appear, no ?
> 
> I think it would be better to leave parsing anti-quotations to the  
> quotations themselves, rather than forcing everyone to use $...$. For  
> many situations $...$ is much more heavyweight syntax than necessary.

Typographically, $ is a mistake.

Look for something lighter, and it is probably application-dependent  
what the best alternative is. E.g. for my XML preprocessor  
(http://projects.camlcity.org/projects/dl/pxp-1.2.3/doc/manual/html/ref/Intro_preprocessor.html)  
I used (: ... :) for anti-quotations.

I second Leo's idea to leave it to the preprocessor.

Gerd


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Gerd Stolpmann, Darmstadt, Germany    gerd at gerd-stolpmann.de
Creator of GODI and camlcity.org.
Contact details:        http://www.camlcity.org/contact.html
Company homepage:       http://www.gerd-stolpmann.de
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