[Zope] - Re: [XML-SIG] RE: [Zope] - XML-style DTML code

[Phil Harris]

Surely, xml would allow <'s and >'s within quoted strings?

if not, boy is that weird!


----- Original Message ----- 
From: Lars Marius Garshol <larsga@ifi.uio.no>
To: <xml-sig@python.org>; <zope@zope.org>
Sent: Friday, January 29, 1999 4:01 PM
Subject: [Zope] - Re: [XML-SIG] RE: [Zope] - XML-style DTML code


>
>* Paul Everitt
>| 
>| <font size="<!--#var font_size-->">
>| [...]
>| <font size="<?ztml #var arg ?>">
>| 
>| which *not* valid XML...is it?
>
>Neither of these are well-formed XML, since '<'s are not allowed in
>attribute values. The spec is less clear than it ought to be on this[1],
>perhaps, but xmlproc, XP, Lark and the Sun XML parser are all in
>agreement that this isn't allowed. 
>
>AElfred allows it, but then some checks have been left out of AElfred,
>ostensibly for class file size reasons.
>
>| That is, can you have markup inside markup?
>
>No. Even if you write 
>
>  <font size="&lt;?ztml #var arg ?>">
>
>the PI in the attribute won't be recognized as one.
> 
>However, not knowing Zope I don't think this is fatal if Zope
>substitutes this before any XML/HTML parsers see the result. If you're
>trying to use XML/HTML/SGML syntax for a preprocessor then maybe that
>isn't the way to go.
>
>* Andrew M. Kuchling
>|
>| I don't believe so, but have CC'ed this to the XML-SIG where the
>| real experts hang out.  PIs have to be outside other markup; I
>| suspect the XML way of handling your second case would be to define
>| an entity:
>| 
>|   <font size="&arg;">
>
>This is right, yes.
>
>--Lars M.
>
>[1] The relevant part is a WFC to production 41 in section 3.1.
>
>
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