Fix bug where use of 'exclude' config option would cause exception

planet/config.py

@@ -359,7 +359,7 @@ def filters(section=None):
             urllib.quote(filter(section)))
     if exclude(section):
         filters.append('regexp_sifter.py?exclude=' +
-            urllib.quote(filter(section)))
+            urllib.quote(exclude(section)))
     return filters
 
 def planet_options():

tests/data/filter/regexp-sifter2.ini

@@ -0,0 +1,2 @@
+[Planet]
+exclude=two

tests/test_filters.py

@@ -111,6 +111,25 @@ class FilterTests(unittest.TestCase):
 
         self.assertNotEqual('', output)
 
+    def test_regexp_filter2(self):
+        config.load('tests/data/filter/regexp-sifter2.ini')
+
+        testfile = 'tests/data/filter/category-one.xml'
+
+        output = open(testfile).read()
+        for filter in config.filters():
+            output = shell.run(filter, output, mode="filter")
+
+        self.assertNotEqual('', output)
+
+        testfile = 'tests/data/filter/category-two.xml'
+
+        output = open(testfile).read()
+        for filter in config.filters():
+            output = shell.run(filter, output, mode="filter")
+
+        self.assertEqual('', output)
+
 try:
     from subprocess import Popen, PIPE