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From: "G.B." <bauhaus@futureapps.invalid>
Newsgroups: comp.lang.ada
Subject: Re: What is the best license to use for open source software?
Date: Thu, 29 Jan 2015 15:06:33 +0100
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Date: 2015-01-29T15:06:33+01:00
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On 29.01.15 13:47, Vadim Godunko wrote:
> On 01/29/2015 03:23 PM, G.B. wrote:
>>
>> Also, using XML Processing Instructions (PIs), you could
>> be specifically using XML and avoid another XML namespace
>> plus more node names:
>>
>>   <?gnoga-template-parser  if boolean_expression then ?>
>>     <div class="visible-instrument">
>>       ...
>>     </div>
>>   <?gnoga-template-parser end if ?>
>>
> Use of PI doesn't protect from generation of invalid HTML,

It doesn't protect, if used in the way outlined, yes. I'd rather
not use it for bracketing stuff, syntax-wise. Only for simple
substitutions, say.

OTOH, if the instruction can be more "heavy":

     <?gnoga-template-parser
       for Item of Data loop #that-thing;
      ?>
        <tr data-id="that-thing">
          ...
        </tr>

which makes the PI apply to the next element so identified.
It's a bit like providing for writing

    Iterate (Page, Tr'Access);