Both the description and content node look like this in my RSS feed:

<xsl:value-of select="concat('&lt;![CDATA[ ', umbraco.library:Replace(./data [@alias='bodyText'], '/media/', concat($siteUrl, '/media/')),']]&gt;')" disable-output-escaping="yes"/>

It wraps the content in a CDATA tag, any images in the media folder are changed by adding the siteUrl in front of them. The siteUrl variable is defined like this:

  <xsl:variable name="siteUrl">
    <xsl:text>http://</xsl:text>;
    <xsl:value-of select="umbraco.library:RequestServerVariables('HTTP_HOST')" />
  </xsl:variable>

Thanks for posting ;)

I successfully rendered the image's url:

concat($siteUrl, photo)

Now I need to enclose the url into an <img />:

<img src="{concat($siteUrl, photo)}"/>

 Such tag cannot be enclosed within the content node. Do I have to insert it whitin the CDATA? How can I escape illegal characters?

Thanks :) 

Isn't  the <img> already in your bodyText? You need to add an EXTRA image in there? 

I'd try to do the same thing then yes, with CDATA, (not sure if this will work):

<xsl:value-of select="'&lt;![CDATA[ '/>
    <img src="{concat($siteUrl, photo)}"/>
<xsl:value-of select="']]&gt;'"/>

The image is not in the bodyText. I get the path from my DocType's property called "photo". As I previously wrote, I successfully get the path, which I concat with the domain name.

The code above doesn't work as value-of doesn't accept any value outside the select property :(

Here is the solution I found:

<xsl:value-of select="concat('&lt;![CDATA[&lt;img src=&quot;', concat($siteUrl, photo),'&quot;/&gt;',']]&gt;')" disable-output-escaping="yes"/> 

This is totally crazy to read. The trick was to escape illegal character, even those required by CDATA.
concat($siteUrl, photo) returns http://www.domain.com/photo.jpg

Hehe, glad you got it, this was going to be my next suggestion. It's messy, for sure, but it works! :-)

Thanks Sebastian. It was best to sleep on it, because the solution is much simpler. Take a look at the url:

http://stackoverflow.com/questions/4072872/xslt-embedding-an-image-in-a-rss-feed

The trick was to wrap <xsl:value-of /> inside 2 CDATA, then closing them accordingly:

<content:encoded>
  <![CDATA[<img src="]]>
  <xsl:value-of select='$url' />
  <![CDATA[">]]>
</content:encoded>

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