W3C home > Mailing lists > Public > www-svg@w3.org > April 2008

Re: Supporting MathML and SVG in text/html, and related topics

From: Krzysztof Żelechowski <giecrilj@stegny.2a.pl>
Date: Wed, 16 Apr 2008 21:26:37 +0200
To: Ian Hickson <ian@hixie.ch>
Cc: whatwg@whatwg.org, public-html@w3.org, www-math@w3.org, www-svg@w3.org
Message-Id: <1208373997.7011.85.camel@a1dmin.vola.spe.com.pl>

Dnia 10-04-2008, Cz o godzinie 09:51 +0000, Ian Hickson pisze:

> On Sat, 4 Nov 2006, Paul Topping wrote:
> >
> > Elements whose namespaces aren't known should be handled like any other 
> > unknown HTML element. I believe the common way for user agents to handle 
> > an unknown element is basically to ignore the tag and its attributes and 
> > treat any text between start and end tags as if the tags weren't there. 
> > Namespaces do not present any new challenge in this area. "Bogus 
> > namespaces" are no more of a security risk than bogus HTML tags. It is 
> > only the ones that ARE processed by the user agent that represent 
> > potential security risks.
> 
> The problem is legacy content like:
> 
>    <html>
>     <foo xmlns="bogus namespace">
>      ...rest of HTML document...
> 
> We don't want to make the whole document get ignored.

An example of such a tag is Microsoft HTML application indicator 
which is empty by design.
But how does Paul’s recipe amount to ignoring the whole document?


> If anyone is actually reading this 3363 line e-mail, I'm
> impressed. Please do let me know that you read this.

I do not do bungee jumping though.  
Received on Thursday, 17 April 2008 10:57:08 GMT

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