Bugs item #1752919, was opened at 2007-07-12 22:28
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Category: Python Library
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Eugine Kosenko (eugine_kosenko)
Assigned to: Nobody/Anonymous (nobody)
Summary: Exception in HTMLParser for special JavaScript code
Initial Comment:
import HTMLParser
p = HTMLParser.HTMLParser()
p.feed("""
<script>
<!--
bmD.write('</sc'+'ript>');
//-->
</script>
""")
Traceback (most recent call last):
File "<stdin>", line 4, in ?
File "/usr/lib/python2.4/HTMLParser.py", line 108, in feed
self.goahead(0)
File "/usr/lib/python2.4/HTMLParser.py", line 150, in goahead
k = self.parse_endtag(i)
File "/usr/lib/python2.4/HTMLParser.py", line 314, in parse_endtag
self.error("bad end tag: %r" % (rawdata[i:j],))
File "/usr/lib/python2.4/HTMLParser.py", line 115, in error
raise HTMLParseError(message, self.getpos())
HTMLParser.HTMLParseError: bad end tag: "</sc'+'ript>", at line 4, column 12
The JavaScript code is protected via HTML comment, so HTMLParser must skip it
entirely, and the parsing must be successfull.
Instead of this, the JavaScript code is parsed as a part of the HTML page, and
incorrect end tag is detected. If one move the actual end tag </script> up just
after start tag <script>, the code is parsed without errors.
Hence the code seems to be artificial, it is used often in real site counters
to prevent the blocking of them.
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