Fix duplicate directories in %run tab completion

IPython/core/completerlib.py

@@ -267,20 +267,23 b' def magic_run_completer(self, event):'
     isdir = os.path.isdir
     relpath, tilde_expand, tilde_val = expand_user(relpath)
 
-    dirs = [f.replace('\\','/') + "/" for f in lglob(relpath+'*') if isdir(f)]
-
     # Find if the user has already typed the first filename, after which we
     # should complete on all files, since after the first one other files may
     # be arguments to the input script.
 
     if any(magic_run_re.match(c) for c in comps):
-        pys =  [f.replace('\\','/') for f in lglob(relpath+'*')]
+        matches =  [f.replace('\\','/') + ('/' if isdir(f) else '')
+                            for f in lglob(relpath+'*')]
     else:
+        dirs = [f.replace('\\','/') + "/" for f in lglob(relpath+'*') if isdir(f)]
         pys =  [f.replace('\\','/')
                 for f in lglob(relpath+'*.py') + lglob(relpath+'*.ipy') +
                 lglob(relpath+'*.ipynb') + lglob(relpath + '*.pyw')]
+
+        matches = dirs + pys
+
     #print('run comp:', dirs+pys) # dbg
-    return [compress_user(p, tilde_expand, tilde_val) for p in dirs+pys]
+    return [compress_user(p, tilde_expand, tilde_val) for p in matches]
 
 
 def cd_completer(self, event):

IPython/core/tests/test_completerlib.py

@@ -32,7 +32,7 b' class MockEvent(object):'
 #-----------------------------------------------------------------------------
 class Test_magic_run_completer(unittest.TestCase):
     files = [u"aao.py", u"a.py", u"b.py", u"aao.txt"]
-    dirs = [u"adir", "bdir"]
+    dirs = [u"adir/", "bdir/"]
 
     def setUp(self):
         self.BASETESTDIR = tempfile.mkdtemp()
@@ -83,7 +83,7 b' class Test_magic_run_completer(unittest.TestCase):'
         print(repr(event.line))
         match = set(magic_run_completer(None, event))
         self.assertEqual(match, {join(self.BASETESTDIR, f) for
-                                f in (u'a.py', u'aao.py', u'aao.txt', u'adir')})
+                                f in (u'a.py', u'aao.py', u'aao.txt', u'adir/')})
 
 class Test_magic_run_completer_nonascii(unittest.TestCase):
     @onlyif_unicode_paths