prettify + xhtml + lang-xml causes exception in firefox

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Set document type etc to XHTML
2. Include a block with prettyprint and lang-xml
3. Load in Firefox

See attached file (expects prettify.js to be relative at src/
prettify.js).  Note the document is valid according to the W3C tool.

What is the expected output?  What do you see instead?

Expect to see syntax-highlighted block.  Instead, with the Error Console 
open, see the Exception:

Error: uncaught exception: [Exception... "Component returned failure code: 
0x80004003 (NS_ERROR_INVALID_POINTER) [nsIDOMNSHTMLElement.innerHTML]"  
nsresult: "0x80004003 (NS_ERROR_INVALID_POINTER)"  location: "JS frame :: 
file:///foo/prettify-bug/src/prettify.js :: o :: line 46"  data: no]

Versions:

prettify-small-3-Dec-2009
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-GB; rv:1.9.1.7) 
Gecko/20091221 Firefox/3.5.7

Doesn't seem to depend on the actual content of the prettyprinted block, 
but works fine with other language types, and works fine without the 
DOCTYPE.

Original issue reported on code.google.com by [email protected] on 18 Jan 2010 at 1:05

Attachments:

• prettify-bug.xhtml