Export blog feature produces invalid XML file

[rjwalsh]

The WXR output is not valid XML. Using minidom in Python (which uses Expat) to read the file can produce an error like this:

xml.parsers.expat.ExpatError: unbound prefix: line 90, column 0

Looking at the line in question, we see something like this:

<excerpt:encoded><![CDATA[]]></excerpt:encoded>

The excerpt namespace is not defined. We need to add something like this to the rss attributes near the top of the file:

xmlns:excerpt="http://wordpress.org/excerpt"

or some similar URL.

[reppep]

I can confirm that this also triggers errors in Firefox 3 and xml star, and prevents successful importation into Movable Type. I exported from WP 2.6 and 2.6.1.

[byrnereese]

Patch to fix undeclared namespace

[byrnereese]

I have successfully reproduced this bug on 2.6.2 and WordPress.com on the date the note was made. Attached is a patch to fix this issue.

[DD32]

As well as defining the namespace, A file needs to exist at the URL which describes the except namespace. Not something most people understand how to create..

[kylegiga]

DD32, only if you're using a validating parser. Quite rare.

The rest of the namespaces don't have files anyways.

[jacobsantos]

Why hasn't this been committed?

[ryan]

(In [9892]) Declare excerpt namespace. Props byrnereese. fixes #7624