UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 4: ordinal not in range(128)

Hi @vangheem

I am using i18ndude for extract the i18n strings using a bash script and when executes show the bellow error:

``` python
(i18ndude)macagua@dacagua:~/proyectos/plone/git/collective.documentviewer/collective/documentviewer/locales$ ./rebuild_i18n.sh
There was an error processing ../templates/documentviewer.pt
Traceback (most recent call last):
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/i18ndude/extract.py", line 500, in tal_strings
metal=False)()
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 266, in __call__
self.interpret(self.program)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 338, in interpret
handlers[opcode](self, args)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 860, in do_useMacro
self.interpret(block)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 338, in interpret
handlers[opcode](self, args)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 907, in do_fillSlot
self.interpret(block)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 338, in interpret
handlers[opcode](self, args)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 853, in do_defineMacro
self.interpret(macro)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 338, in interpret
handlers[opcode](self, args)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 528, in do_optTag_tal
self.do_optTag(stuff)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 513, in do_optTag
return self.no_tag(start, program)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 508, in no_tag
self.interpret(program)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 338, in interpret
handlers[opcode](self, args)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 847, in do_condition
self.interpret(block)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 338, in interpret
handlers[opcode](self, args)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 528, in do_optTag_tal
self.do_optTag(stuff)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 513, in do_optTag
return self.no_tag(start, program)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 508, in no_tag
self.interpret(program)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 338, in interpret
handlers[opcode](self, args)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 847, in do_condition
self.interpret(block)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 338, in interpret
handlers[opcode](self, args)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 528, in do_optTag_tal
self.do_optTag(stuff)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 513, in do_optTag
return self.no_tag(start, program)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 508, in no_tag
self.interpret(program)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 338, in interpret
handlers[opcode](self, args)
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 711, in do_insertTranslation
default = tmpstream.getvalue()
File "/home/macagua/virtualenv/i18ndude/lib/python2.6/site-packages/zope/tal/talinterpreter.py", line 1007, in getvalue
return u''.join(self)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 4: ordinal not in range(128)
```

I am trying to remplace all special characters with ASCII codes into _documentviewer.pt_ file is included in three times the bellow line:

``` xml
■
```

What kind of special character are you want represent?