def unknown_starttag(self, tag, attrs):
        # increment depth counter
        self.depth += 1

        # normalize attrs
        attrs = [self._normalize_attributes(attr) for attr in attrs]

        # track xml:base and xml:lang
        attrsD = dict(attrs)
        baseuri = attrsD.get('xml:base', attrsD.get('base')) or self.baseuri
        if isinstance(baseuri, bytes_):
            baseuri = baseuri.decode(self.encoding, 'ignore')
        # ensure that self.baseuri is always an absolute URI that
        # uses a whitelisted URI scheme (e.g. not `javscript:`)
        if self.baseuri:
            self.baseuri = _makeSafeAbsoluteURI(self.baseuri, baseuri) or self.baseuri
        else:
            self.baseuri = _urljoin(self.baseuri, baseuri)
        lang = attrsD.get('xml:lang', attrsD.get('lang'))
        if lang == '':
            # xml:lang could be explicitly set to '', we need to capture that
            lang = None
        elif lang is None:
            # if no xml:lang is specified, use parent lang
            lang = self.lang
        if lang:
            if tag in ('feed', 'rss', 'rdf:RDF'):
                self.feeddata['language'] = lang.replace('_','-')
        self.lang = lang
        self.basestack.append(self.baseuri)
        self.langstack.append(lang)

        # track namespaces
        for prefix, uri in attrs:
            if prefix.startswith('xmlns:'):
                self.trackNamespace(prefix[6:], uri)
            elif prefix == 'xmlns':
                self.trackNamespace(None, uri)

        # track inline content
        if self.incontent and not self.contentparams.get('type', 'xml').endswith('xml'):
            if tag in ('xhtml:div', 'div'):
                return # typepad does this 10/2007
            # element declared itself as escaped markup, but it isn't really
            self.contentparams['type'] = 'application/xhtml+xml'
        if self.incontent and self.contentparams.get('type') == 'application/xhtml+xml':
            if tag.find(':') != -1:
                prefix, tag = tag.split(':', 1)
                namespace = self.namespacesInUse.get(prefix, '')
                if tag=='math' and namespace=='http://www.w3.org/1998/Math/MathML':
                    attrs.append(('xmlns',namespace))
                if tag=='svg' and namespace=='http://www.w3.org/2000/svg':
                    attrs.append(('xmlns',namespace))
            if tag == 'svg':
                self.svgOK += 1
            return self.handle_data('<%s%s>' % (tag, self.strattrs(attrs)), escape=0)

        # match namespaces
        if tag.find(':') != -1:
            prefix, suffix = tag.split(':', 1)
        else:
            prefix, suffix = '', tag
        prefix = self.namespacemap.get(prefix, prefix)
        if prefix:
            prefix = prefix + '_'

        # special hack for better tracking of empty textinput/image elements in illformed feeds
        if (not prefix) and tag not in ('title', 'link', 'description', 'name'):
            self.intextinput = 0
        if (not prefix) and tag not in ('title', 'link', 'description', 'url', 'href', 'width', 'height'):
            self.inimage = 0

        # call special handler (if defined) or default handler
        methodname = '_start_' + prefix + suffix
        try:
            method = getattr(self, methodname)
            return method(attrsD)
        except AttributeError:
            # Since there's no handler or something has gone wrong we explicitly add the element and its attributes
            unknown_tag = prefix + suffix
            if len(attrsD) == 0:
                # No attributes so merge it into the encosing dictionary
                return self.push(unknown_tag, 1)
            else:
                # Has attributes so create it in its own dictionary
                context = self._getContext()
                context[unknown_tag] = attrsD
dataset/ETHPy150Open SickRage/SickRage/lib/feedparser/mixin.py/_FeedParserMixin.unknown_starttag/original