IndexError: tuple index out of range

[en0x]

How to Reproduce

While doing a GET operation on /wiki/WikiFormatting, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{'page': u'WikiFormatting'}

User Agent was: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008072820 Firefox/3.0.1

System Information

Trac	0.11
Python	2.4.3 (#1, May 24 2008, 13:47:28) [GCC 4.1.2 20070626 (Red Hat 4.1.2-14)]
setuptools	0.6c8
SQLite	3.3.6
pysqlite	2.3.5
Genshi	0.5
Pygments	0.10
jQuery:	1.2.3

Python Traceback

Traceback (most recent call last):
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/web/main.py", line 423, in _dispatch_request
    dispatcher.dispatch(req)
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/web/main.py", line 219, in dispatch
    data, content_type)
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/web/chrome.py", line 726, in render_template
    stream.render(method, doctype=doctype, out=buffer)
  File "build/bdist.linux-i686/egg/genshi/core.py", line 179, in render
  File "build/bdist.linux-i686/egg/genshi/output.py", line 61, in encode
  File "build/bdist.linux-i686/egg/genshi/output.py", line 311, in __call__
  File "build/bdist.linux-i686/egg/genshi/output.py", line 753, in __call__
  File "build/bdist.linux-i686/egg/genshi/output.py", line 592, in __call__
  File "build/bdist.linux-i686/egg/genshi/output.py", line 698, in __call__
  File "build/bdist.linux-i686/egg/genshi/output.py", line 532, in __call__
  File "build/bdist.linux-i686/egg/genshi/core.py", line 283, in _ensure
  File "build/bdist.linux-i686/egg/genshi/core.py", line 283, in _ensure
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/web/chrome.py", line 779, in _strip_accesskeys
    for kind, data, pos in stream:
  File "build/bdist.linux-i686/egg/genshi/core.py", line 283, in _ensure
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/web/chrome.py", line 768, in _generate
    for kind, data, pos in stream:
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 569, in _include
  File "build/bdist.linux-i686/egg/genshi/template/markup.py", line 299, in _match
  File "build/bdist.linux-i686/egg/genshi/template/markup.py", line 299, in _match
  File "build/bdist.linux-i686/egg/genshi/template/markup.py", line 246, in _match
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 543, in _exec
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 533, in _eval
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 496, in _eval
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 551, in _flatten
  File "build/bdist.linux-i686/egg/genshi/core.py", line 283, in _ensure
  File "build/bdist.linux-i686/egg/genshi/path.py", line 141, in _generate
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 569, in _include
  File "build/bdist.linux-i686/egg/genshi/template/markup.py", line 235, in _strip
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 543, in _exec
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 533, in _eval
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 496, in _eval
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 551, in _flatten
  File "build/bdist.linux-i686/egg/genshi/core.py", line 283, in _ensure
  File "build/bdist.linux-i686/egg/genshi/path.py", line 141, in _generate
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 569, in _include
  File "build/bdist.linux-i686/egg/genshi/template/markup.py", line 235, in _strip
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 543, in _exec
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 520, in _eval
  File "build/bdist.linux-i686/egg/genshi/template/base.py", line 286, in _eval_expr
  File "build/bdist.linux-i686/egg/genshi/template/eval.py", line 180, in evaluate
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/wiki/templates/wiki_view.html", line 37, in <Expression u'wiki_to_html(context, page.text)'>
    ${wiki_to_html(context, page.text)}
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/util/compat.py", line 133, in newfunc
    return func_(*(args + fargs), **dict(kwargs, **fkwargs))
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/wiki/formatter.py", line 1095, in format_to_html
    return HtmlFormatter(env, context, wikidom).generate(escape_newlines)
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/wiki/formatter.py", line 1054, in generate
    escape_newlines)
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/wiki/formatter.py", line 833, in format
    self.handle_code_block(line)
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/wiki/formatter.py", line 764, in handle_code_block
    processed = self.code_processor.process(code_text)
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/wiki/formatter.py", line 179, in process
    text = self.processor(text)
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/wiki/formatter.py", line 170, in _mimeview_processor
    self.name, text)
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/mimeview/api.py", line 606, in render
    qr = renderer.get_quality_ratio(mimetype)
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/mimeview/pygments.py", line 98, in get_quality_ratio
    self._init_types()
  File "/home/braindead/webapps/trac/lib/python2.4/Trac-0.11-py2.4.egg/trac/mimeview/pygments.py", line 181, in _init_types
    self._types[mimetype] = (aliases[0], self.QUALITY_RATIO)
IndexError: tuple index out of range

[cboos]

Looks like you need r7485, which will be in 0.11.2.

In the meantime, simply apply the corresponding patch or upgrade to 0.11-stable.

[cboos]

As noted above, problem fixed preemptively by Tim in r7485.