After attaching a file that has a extension ".log" the preview failes and I got a traceback.

[pb-ml@…]

I attached the output of a program I had run to a active ticket. The file was called updatefriends.log. This resulted in a traceback. - and I thought that the upload have failed. Going back to the ticket - showed the file (with correct size) - so it was there.. but I got the same error when trying to view the ticket. I then attached a .sql -file and that worked fine.

So the problem seems to be related to .log-files.

We are using recent version of sandbox/workflow.

Traceback (most recent call last):
  File "/usr/lib/python2.3/site-packages/trac/web/main.py", line 313, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.3/site-packages/trac/web/main.py", line 198, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.3/site-packages/trac/attachment.py", line 304, in process_request
    self._render_view(req, attachment)
  File "/usr/lib/python2.3/site-packages/trac/attachment.py", line 454, in _render_view
    if self.render_unsafe_content and not binary and \
AttributeError: 'NoneType' object has no attribute 'startswith'

[Christian Boos]

This also affects source:trunk​.

[Christian Boos]

Fixed in r3428; thanks for the report!