TypeError: expected string or buffer

[Ryan J Ollos]

Found the following in the logs:

2015-12-08 19:09:27,984 Trac[filtersystem] ERROR: Filter strategy <tracspamfilter.filters.trapfield.TrapFieldFilterStrategy object at 0x817990ac> raised exception: expected string or bufferTraceback (most recent call last):
  File "/srv/trac-hacks.org/pve/lib/python2.6/site-packages/TracSpamFilter-1.0.6.dev0-py2.6.egg/tracspamfilter/filtersystem.py", line 192, in test    retval = strategy.test(req, author, content, ip)  File "/srv/trac-hacks.org/pve/lib/python2.6/site-packages/TracSpamFilter-1.0.6.dev0-py2.6.egg/tracspamfilter/filters/trapfield.py", line 65, in test    i = shorten_line(javascript_quote(i), 50)
  File "build/bdist.linux-i686/egg/trac/util/text.py", line 155, in javascript_quote
    return _js_quote_re.sub(replace, text)TypeError: expected string or buffer

I guess the issue is probably that a sequence other than a string is being passed to javascript_quote:

>>> javascript_quote([1, 2])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/rjollos/Documents/Workspace/trac-dev/teo-rjollos.git/trac/util/text.py", line 152, in javascript_quote
    return _js_quote_re.sub(replace, text)
TypeError: expected string or buffer

I wonder if this can happen through duplicated arguments (e.g. ?trap_field=1&trap_field=2).