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Re: XHTML, xml-stylesheet etc. attribute values casesensitive?

  • From: Bjoern Hoehrmann <derhoermi@g...>
  • To: heikki@n... (Heikki Toivonen)
  • Date: Wed, 26 Sep 2001 21:57:19 +0200

xml stylesheet xhtml
* Heikki Toivonen wrote:
>The XHTML 1.0 specification states that element and attribute names must 
>be lower case, but it does not say anything about attribute values. 
>Clearly script-related attributes like onload, onclick etc. are case 
>sensitive, as is the value of the style attribute. So to me it would 
>seem logical that all attribute values in XHTML should be case 
>sensitive, and preferably lower case. Is this being addressed anywhere?

Case-sensitivity of attribute values depends on the value type. As you
said, attribute values with script content depend on the
case-sensitivity of the scripting language. Some attribute values have
predefined lists of valid values, e.g. the method attribute of the form
element, these are case-sensitive through the case-sensitivity of XML,
others are case-insensitive through the normative reference to HTML 4,
e.g. the type attribute of the style element. AFAICT this will be more
clearly stated in XHTML 1.0 Second Edition.

>A related issue is the Associating Stylesheets with XML Documents 
>specification. It refers to HTML 4.0 for the semantics of the 
>pseudo-attribute values. That spec predates XHTML 1.0, but it would seem 
>logical that it should refer to XHTML 1.0 now.

XHTML 1.0 defines them through normative refernce to HTML 4... The
xml-stylesheet recommendation needs to resolve a lot of unadressed
issues; it doesn't really matter where the semantics are defined for
these pseudo-attributes in the current recommendation.
-- 
Björn Höhrmann { mailto:bjoern@h... } http://www.bjoernsworld.de
am Badedeich 7 } Telefon: +49(0)4667/981028 { http://bjoern.hoehrmann.de
25899 Dagebüll { PGP Pub. KeyID: 0xA4357E78 } http://www.learn.to/quote/

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