I modified 
----------
            markup_b = self._apply_pygments(new or '', dest_file)
    except:
        pass
------------
to
------------
            markup_b = self._apply_pygments(new or '', dest_file)
    except Exception as e:
        logging.exception('Failed to apply pygments: %s', e)
--------------

Then restarted memcached/httpd.
loaded a diff file via rbt (rbt post -u -r 114 -I check_mysql_multirow.pl)
and I got an error on UI
----
     There was an error displaying this diff.
    
    global name 'logging' is not defined

Details:
Traceback (most recent call last):
  File 
"/usr/lib/python2.6/site-packages/ReviewBoard-2.0.20-py2.6.egg/reviewboard/diffviewer/views.py",
 
line 265, in get
    response = renderer.render_to_response(request)
  File 
"/usr/lib/python2.6/site-packages/ReviewBoard-2.0.20-py2.6.egg/reviewboard/diffviewer/renderers.py",
 
line 56, in render_to_response
    return HttpResponse(self.render_to_string(request))
  File 
"/usr/lib/python2.6/site-packages/ReviewBoard-2.0.20-py2.6.egg/reviewboard/diffviewer/renderers.py",
 
line 74, in render_to_string
    large_data=True)
  File 
"/usr/lib/python2.6/site-packages/Djblets-0.8.22-py2.6.egg/djblets/cache/backend.py",
 
line 111, in cache_memoize
    data = lookup_callable()
  File 
"/usr/lib/python2.6/site-packages/ReviewBoard-2.0.20-py2.6.egg/reviewboard/diffviewer/renderers.py",
 
line 73, in <lambda>
    lambda: self.render_to_string_uncached(request),
  File 
"/usr/lib/python2.6/site-packages/ReviewBoard-2.0.20-py2.6.egg/reviewboard/diffviewer/renderers.py",
 
line 87, in render_to_string_uncached
    request=request)
  File 
"/usr/lib/python2.6/site-packages/ReviewBoard-2.0.20-py2.6.egg/reviewboard/diffviewer/diffutils.py",
 
line 422, in populate_diff_chunks
    chunks = generator.get_chunks()
  File 
"/usr/lib/python2.6/site-packages/ReviewBoard-2.0.20-py2.6.egg/reviewboard/diffviewer/chunk_generator.py",
 
line 161, in get_chunks
    large_data=True)
  File 
"/usr/lib/python2.6/site-packages/Djblets-0.8.22-py2.6.egg/djblets/cache/backend.py",
 
line 111, in cache_memoize
    data = lookup_callable()
  File 
"/usr/lib/python2.6/site-packages/ReviewBoard-2.0.20-py2.6.egg/reviewboard/diffviewer/chunk_generator.py",
 
line 160, in <lambda>
    lambda: list(self._get_chunks_uncached()),
  File 
"/usr/lib/python2.6/site-packages/ReviewBoard-2.0.20-py2.6.egg/reviewboard/diffviewer/chunk_generator.py",
 
line 236, in _get_chunks_uncached
    logging.exception('Failed to apply pygments: %s', e)
NameError: global name 'logging' is not defined
-----

Here is the reviewboard.log
----------    
2015-11-18 01:01:28,274 - DEBUG -  - DiffParser.parse: Beginning parse of 
diff, size = 748
2015-11-18 01:01:28,275 - DEBUG -  - DiffParser.parse: Finished parsing 
diff.
2015-11-18 01:01:36,063 - DEBUG -  - DiffParser.parse: Beginning parse of 
diff, size = 748
2015-11-18 01:01:36,063 - DEBUG -  - DiffParser.parse: Finished parsing 
diff.
2015-11-18 01:01:49,314 - DEBUG -  - Cache miss for key 
jsi18n-djangojs-reviewboard_djblets-en-1444348511.
2015-11-18 01:02:30,588 - DEBUG - None - wchen - /reviews/r/114/diff/ - 
Generating diff viewer page for filediff id 405
2015-11-18 01:02:30,619 - DEBUG - None - wchen - /reviews/r/114/diff/ - 
Begin: Generating diff file info for diffset id 405
2015-11-18 01:02:30,625 - DEBUG - None - wchen - /reviews/r/114/diff/ - 
End: Generating diff file info for diffset id 405
2015-11-18 01:02:30,626 - DEBUG - None - wchen - /reviews/r/114/diff/ - 
Generating diff file info for diffset id 405 took 0.005950 seconds
2015-11-18 01:02:30,630 - DEBUG - None - wchen - /reviews/r/114/diff/ - 
Done generating diff viewer page for filediff id 405
2015-11-18 01:02:31,074 - DEBUG - None - wchen - 
/reviews/r/114/diff/3/fragment/1876/ - Begin: Generating diff file info for 
diffset id 405, filediff 1876
2015-11-18 01:02:31,080 - DEBUG - None - wchen - 
/reviews/r/114/diff/3/fragment/1876/ - End: Generating diff file info for 
diffset id 405, filediff 1876
2015-11-18 01:02:31,081 - DEBUG - None - wchen - 
/reviews/r/114/diff/3/fragment/1876/ - Generating diff file info for 
diffset id 405, filediff 1876 took 0.006040 seconds
2015-11-18 01:02:31,086 - DEBUG -  - Cache miss for key 
diffviewer/diff_file_fragment.html-0-3-1876-collapsed-highlighting-en-1444348487.
2015-11-18 01:02:31,087 - DEBUG -  - Cache miss for key 
diff-sidebyside-hl-1876-en.
2015-11-18 01:02:31,088 - DEBUG -  - Cache miss for key 
file:2:/home/cvs/OPS/nagios/libexec/check_mysql_multirow.pl%2Cv:1.1:.
2015-11-18 01:02:31,088 - DEBUG - None - wchen - 
/reviews/r/114/diff/3/fragment/1876/ - Begin: Fetching file 
'/home/cvs/OPS/nagios/libexec/check_mysql_multirow.pl,v' r1.1 from CVS-prod
2015-11-18 01:02:33,822 - DEBUG - None - wchen - 
/reviews/r/114/diff/3/fragment/1876/ - End: Fetching file 
'/home/cvs/OPS/nagios/libexec/check_mysql_multirow.pl,v' r1.1 from CVS-prod
2015-11-18 01:02:33,824 - DEBUG - None - wchen - 
/reviews/r/114/diff/3/fragment/1876/ - Fetching file 
'/home/cvs/OPS/nagios/libexec/check_mysql_multirow.pl,v' r1.1 from CVS-prod 
took 2.733748 seconds
2015-11-18 01:02:33,842 - DEBUG - None - wchen - 
/reviews/r/114/diff/3/fragment/1876/ - Begin: Patching file 
check_mysql_multirow.pl
2015-11-18 01:02:33,889 - DEBUG - None - wchen - 
/reviews/r/114/diff/3/fragment/1876/ - End: Patching file 
check_mysql_multirow.pl
2015-11-18 01:02:33,891 - DEBUG - None - wchen - 
/reviews/r/114/diff/3/fragment/1876/ - Patching file 
check_mysql_multirow.pl took 0.046748 seconds



Christian Hammond於 2015年11月17日星期二 UTC-8下午2時30分56秒寫道:
>
> They're part of the site_siteconfiguration table, but if it's showing as 
> checked, then that's fine. The issue you're hitting has not come up before, 
> that I've seen, so I expect it's something internal.
>
> In that code block you pasted, there's this:
>
>     try:
>         # TODO: Try to figure out the right lexer for these files
>         #       once instead of twice.
>         if not source_file.endswith(self.STYLED_EXT_BLACKLIST):
>             markup_a = self._apply_pygments(old or '', source_file)
>
>         if not dest_file.endswith(self.STYLED_EXT_BLACKLIST):
>             markup_b = self._apply_pygments(new or '', dest_file)
>     except:
>         pass
>
> Modify the last two lines to be:
>
>     except Exception as e:
>         logging.exception('Failed to apply pygments: %s', e)
>
> Then restart, clear memcached, try loading a diff, and then check the logs 
> to see what it says.
>
> Christian
>
> -- 
> Christian Hammond - chri...@beanbaginc.com <javascript:>
> Review Board - https://www.reviewboard.org
> Beanbag, Inc. - https://www.beanbaginc.com
>
> On Sun, Nov 15, 2015 at 9:45 AM, Wesly Chen <wesly...@gmail.com 
> <javascript:>> wrote:
>
>> I can try.
>> Could you tell me where are the following settings in MySQL database 
>> "reviewboard" so I can verify the setting is enabled in MySQL or not.
>> 1. System setting => Diff Viewer settings => Show syntax highlighting 
>>  is checked.
>> 2. Account settings " Enable syntax highlighting in the diff viewer" is 
>> checked.
>>
>> Thanks,
>>
>> Wesly
>>
>> Christian Hammond於 2015年11月15日星期日 UTC-8上午12時00分55秒寫道:
>>>
>>> Right. What were you looking to do with this file? Are you comfortable 
>>> debugging Python web applications?
>>>
>>> Christian
>>>
>>> -- 
>>> Christian Hammond - chri...@beanbaginc.com
>>> Review Board - https://www.reviewboard.org
>>> Beanbag, Inc. - https://www.beanbaginc.com
>>>
>>> On Sat, Nov 14, 2015 at 11:50 PM, Wesly Chen <wesly...@gmail.com> wrote:
>>>
>>>> On my review board system, it is in 
>>>> /usr/lib/python2.6/site-packages/ReviewBoard-2.0.20-py2.6.egg/reviewboard/diffviewer/chunk_generator.py
>>>>  
>>>>   (not in diffutils.py)
>>>> -------
>>>> (started with line 219) 
>>>>         if self._get_enable_syntax_highlighting(old, new, a, b):
>>>>             repository = self.filediff.diffset.repository
>>>>             tool = repository.get_scmtool()
>>>>             source_file = \
>>>>                 
>>>> tool.normalize_path_for_display(self.filediff.source_file)
>>>>             dest_file = \
>>>>                 tool.normalize_path_for_display(self.filediff.dest_file)
>>>>
>>>>             try:
>>>>                 # TODO: Try to figure out the right lexer for these 
>>>> files
>>>>                 #       once instead of twice.
>>>>                 if not source_file.endswith(self.STYLED_EXT_BLACKLIST):
>>>>                     markup_a = self._apply_pygments(old or '', 
>>>> source_file)
>>>>
>>>>                 if not dest_file.endswith(self.STYLED_EXT_BLACKLIST):
>>>>                     markup_b = self._apply_pygments(new or '', 
>>>> dest_file)
>>>>             except:
>>>>                 pass
>>>> ...
>>>> (line 646)
>>>>     def _apply_pygments(self, data, filename):
>>>>         """Applies Pygments syntax-highlighting to a file's contents.
>>>>
>>>>         The resulting HTML will be returned as a list of lines.
>>>>         """
>>>>         lexer = get_lexer_for_filename(filename,
>>>>                                        stripnl=False,
>>>>                                        encoding='utf-8')
>>>>         lexer.add_filter('codetagify')
>>>>
>>>>         return split_line_endings(
>>>>             highlight(data, lexer, NoWrapperHtmlFormatter()))
>>>> -------------------
>>>>
>>>>

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