base is never used when calling commonprefix, remove it

Author: antocuni

Lib/_pyrepl/fancycompleter.py

@@ -164,10 +164,8 @@ def color_by_type(self, t):
         return getattr(self.theme.fancycompleter, typename, ANSIColors.RESET)
 
 
-def commonprefix(names, base=''):
-    """Return the common prefix of all 'names' starting with 'base'"""
-    if base:
-        names = [x for x in names if x.startswith(base)]
+def commonprefix(names):
+    """Return the common prefix of all 'names'"""
     if not names:
         return ''
     s1 = min(names)

Lib/test/test_pyrepl/test_fancycompleter.py

@@ -29,9 +29,7 @@ def tearDown(self):
     def test_commonprefix(self):
         self.assertEqual(commonprefix(['isalpha', 'isdigit', 'foo']), '')
         self.assertEqual(commonprefix(['isalpha', 'isdigit']), 'is')
-        self.assertEqual(commonprefix(['isalpha', 'isdigit', 'foo'], base='i'), 'is')
         self.assertEqual(commonprefix([]), '')
-        self.assertEqual(commonprefix(['aaa', 'bbb'], base='x'), '')
 
     def test_complete_attribute(self):
         compl = Completer({'a': None}, use_colors=False)