[trac] Fix AttributeError: 'NullTranslations' object has

问题说明：

在ubuntu14.04下，trac启动时会出现如下问题：

Traceback (most recent call last):

File "/usr/bin/trac-admin", line 9, in <module>

load_entry_point('Trac==1.0.1', 'console_scripts', 'trac-admin')()

File "/usr/lib/python2.7/dist-packages/trac/admin/console.py", line 567, in run

translation.activate(locale)

File "/usr/lib/python2.7/dist-packages/trac/util/translation.py", line 325, in activate

translations.activate(locale, env_path)

File "/usr/lib/python2.7/dist-packages/trac/util/translation.py", line 152, in activate

t.add(Translations.load(locale_dir, locale or 'en_US',

AttributeError: 'NullTranslations' object has no attribute 'add'

 

修改方法：

参考：

的修改，即可对应该问题。

Index: branches/1.0-stable/trac/util/translation.py  

================================================= 

--- a/branches/1.0-stable/trac/util/translation.py  

+++ b/branches/1.0-stable/trac/util/translation.py  

@@ -147,5 +147,5 @@  

return  

t = Translations.load(locale_dir, locale or 'en_US')  

-            if not t or t.__class__ is NullTranslations:  

+            if not isinstance(t, Translations):  

t = self._null_translations  

else:

 

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