This is is encountered when extending html.parser.HTMLParser and running with strict mode False.

Expected behavior:
When '''<div style=""    ><b>The <a href="some_url">rain</a> <br /> in <span>Spain</span></b></div>''' is passed to the feed method, div, b, a, br, and span should all be passed to the handle_starttag method.

Actual behavior
The handle_data method receives the values <div style=""    >,<b>,<a href="some_url">,<br />,<span> in addition to the regular text.

This can be fixed by changing this (inside the parse_starttag method):

m = hparse.attrfind_tolerant.search(rawdata, k)

to

m = hparse.attrfind_tolerant.match(rawdata, k)