Re: Escher could have drawn it (Re: XML Schema and Entities)

[Alaric Snell <alaric@alaric-snell.com>]

Quoting Peter Flynn <peter@silmaril.ie>:


> PIs are for passing procedural instructions through XML to a
> post-processor.  They are not intended for consumption and
> action by the XML processor itself in any way that would affect
> the integrity of the document. 

But... they're called Processing Instructions!

My only example of their real-world use is in PHP:

<foo>
<?php
	... executable code! ...
?>
</foo>

...but PHP just happens to use that syntax for compatability, you can just as
easily write:

<<?php echo $element_name?> foo="bar">
  Content!
</<?php echo $element_name?>>

because it finds the <?php with a state machine that traverses the script.

> For example you can encode a forced  line-break in a title that
> you know will be required when the document is typeset but which
> you don't wish to hard-code wrt the document structure:
> 
> <title>How I Made <?LaTeX \\?>A Million Dollars</title>

Eeeeek.

<title>How I Made <typesetting-hints:linebreak />A Million Dollars</title>

...suits me more :-)

> 
> ///Peter
> 

ABS

-- 
                               Alaric B. Snell
 http://www.alaric-snell.com/  http://RFC.net/  http://www.warhead.org.uk/
   Any sufficiently advanced technology can be emulated in software