Relative URLs not allowed by sanitizer after 0.999

[yakky]

This snippet works in 0.999 but not in 0.9999

from html5lib import HTMLParser, sanitizer, serializer, treebuilders, treewalkers

opts = {}
opts['tokenizer'] = sanitizer.HTMLSanitizer
parser = html5lib.HTMLParser(tree=treebuilders.getTreeBuilder("dom"), **opts)

data = u'Hello World<img src="/static/cms/img/icons/plugins/link.png" alt="Link - A Link" title="Link - A Link" id="plugin_obj_2" />'
dom_tree = parser.parseFragment(data)
walker = treewalkers.getTreeWalker("dom")
stream = walker(dom_tree)
s = serializer.htmlserializer.HTMLSerializer()
text = ''.join(s.serialize(stream))

assert text == data

Issue is not present when not using the sanitiser

[stefanfoulis]

in case html5lib causes more problems, we've had good experiences with https://pypi.python.org/pypi/bleach/ .

[gsnedders]

Bleach just uses html5lib, FWIW. This should get fixed soonish (and a release should follow), but I'm in the middle of doing stuff like moving flat, so it's all a bit hectic here. It'll just be caused by the data URI changes, if anyone wants to write a PR for this.