Stefan Behnel wrote:
Well, the HTML serialiser doesn't know the "esi:include" tag, so it can't know that it's supposed to be self-closing. I think you only have three options here:
1) fix Varnish 2) serialise to XHTML instead of HTML (assuming that Varnish supports that) 3) close the tag through byte string substitution *after* serialisation
If you choose to go with 2), you may consider converting the stream back to plain HTML *after* processing the esi tags, using an additional parse-serialise cycle (or an external tool like xmllint or tidy).
I've just tried this with serialization using lxml.etree.tostring instead of lxml.html.tostring. Unfortunately, I'm still getting an open-close tag pair instead of a self-closed tag. Any idea what I may be doing wrong? esiNode = etree.Element("{%s}include" % nsmap['esi'], nsmap=nsmap) esiNode.set('src', tileHref) esiNode.text = None tilePlaceholderNode.addnext(esiNode) toRemove.append(tilePlaceholderNode) Output: <p class="discreet">...<esi:include xmlns:esi="http://www.edge-delivery.org/esi/1.0" src="http://..."></esi:include></p> Martin -- Author of `Professional Plone Development`, a book for developers who want to work with Plone. See http://martinaspeli.net/plone-book