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   Re: [xml-dev] Impact of xml:space="preserve" on line break normalizing?

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On Mon, Sep 08, 2003 at 09:16:41AM -0400, Roger L. Costello wrote:
> Hi Folks,
> 
> Thanks for clarifying that all line breaks in a document are normalized.
> 
> Here's a twist on this issue.  Suppose that an element has an
> xml:space="preserve" attribute.  Do the line breaks in its content get
> normalized?

  The line breaks normalization and xml:space features are othogonal
as far as I understand. The line breaks normalization applies everywhere.
The xml:space="preserve" is about character data made of white space
and used for indentation (mostly), like 
<a xml:space="preserve">
<b/>
</a>
basically means that the text nodes surrounding element b must not be modified
by an editor even if it usually indents output. It forces to report that those
chars are character data and not ignorable whitespace (in a SAX terminology)
to the application. It does not modify the parsing behaviour.

> For example, consider this XML document: (line break characters are
> explicitly shown)
> 
> <?xml version="1.0"?> \n\r
> <Test> \n\r
>      <para xml:space="preserve">This is a \n\r
>      simple paragraph. What \n\r
>      do you think of it?</para> \n\r
> </Test> \n\r
> 
> Note that the <para> element has an xml:space="preserve" attribute.
> 
> After normalizing the line breaks do we end up with this:
> 
> <?xml version="1.0"?> \n\r
> <Test> \n
>      <para xml:space="preserve">This is a \n
>      simple paragraph. What \n
>      do you think of it?</para> \n
> </Test> \n
> 
> Observe that ** all ** line breaks have been normalized.

   yes, I think it's the correct behaviour.

Daniel

-- 
Daniel Veillard      | Red Hat Network https://rhn.redhat.com/
veillard@redhat.com  | libxml GNOME XML XSLT toolkit  http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/




 

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