accepts <foo<bar> input as valid html and doesn't throw malformed start tag

gistfile1.py

 def check_for_whole_start_tag(self, i):
                rawdata = self.rawdata
                locatestarttagend = re.compile(r"""
                    <[a-zA-Z][-.a-zA-Z0-9:_]*          # tag name
                    (?:\s+                             # whitespace before attribute name
                    (?:[a-zA-Z_][-.:a-zA-Z0-9_]*     # attribute name
                    (?:\s*=\s*                     # value indicator
                    (?:'[^']*'                   # LITA-enclosed value
                    |\"[^\"]*\"                # LIT-enclosed value
                    |[^'\">\s]+                # bare value
                    )
                    )?
                    )
                    )*
                    \s*                                # trailing whitespace
                    """, re.VERBOSE)
                m = locatestarttagend.match(rawdata, i)
                if m:
                    j = m.end()
                    next = rawdata[j:j+1]
                    if next == ">":
                        return j + 1
                    if next == "/":
                        if rawdata.startswith("/>", j):
                            return j + 2
                        if rawdata.startswith("/", j):
                            # buffer boundary
                            return -1
                        # else bogus input
                        self.updatepos(i, j + 1)
                        self.error("malformed empty start tag")
                    if next == "":
                        # end of input
                        return -1
                    if next in ("abcdefghijklmnopqrstuvwxyz=/"
                                "ABCDEFGHIJKLMNOPQRSTUVWXYZ"):
                        # end of input in or before attribute value, or we have the
                        # '/' from a '/>' ending
                        return -1
                    self.updatepos(i, j)
                    # start of new code
                    if (next == "<"):
                        return -1
                    # end of new code
                    self.error("malformed start tag")
                raise AssertionError("we should not get here!")