Weird markup renders wrong on trac.edgewall.org and crashes trac v0.10.4

[nathan.collins@…]

If I put

x:"<x" Don't see this

Do see this.

on the trac.edgewall.org/wiki/SandBox and hit preview it renders as

x:"

Do see this.

If I put

x:"<x"

on my v0.10.4 trac on ubuntu 8.04 and hit preview I get "Trac detected an internal error:" in an otherwise empty red box, and the stack trace

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/trac/web/main.py", line 406, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.5/site-packages/trac/web/main.py", line 244, in dispatch
    req.display(template, content_type or 'text/html')
  File "/usr/lib/python2.5/site-packages/trac/web/api.py", line 358, in display
    data = self.hdf.render(template, form_token)
  File "/usr/lib/python2.5/site-packages/trac/web/clearsilver.py", line 296, in render
    injector.feed(template.render())
  File "/usr/lib/python2.5/HTMLParser.py", line 108, in feed
    self.goahead(0)
  File "/usr/lib/python2.5/HTMLParser.py", line 148, in goahead
    k = self.parse_starttag(i)
  File "/usr/lib/python2.5/HTMLParser.py", line 226, in parse_starttag
    endpos = self.check_for_whole_start_tag(i)
  File "/usr/lib/python2.5/HTMLParser.py", line 301, in check_for_whole_start_tag
    self.error("malformed start tag")
  File "/usr/lib/python2.5/HTMLParser.py", line 115, in error
    raise HTMLParseError(message, self.getpos())
HTMLParseError: malformed start tag, at line 65, column 6

My weird string x:"<x" is the most simplified form I could come up with of some text that was causing the above error on my trav v0.10.4.

[cboos]

Looks indeed serious.

[cboos]

Fixed in r7205 for 0.11, r7207 for 0.10.5 and r7211 for 0.12.

I set the milestone of this ticket to 0.10.5, as one can then assume that it's fixed in later versions.

Again, many thanks for reporting this issue!