Fix protection of special characters on tab completion.

Thanks to a patch by Batz (http://github.com/batz), added unit tests.

Closes gh-36.

IPython/core/completer.py

@@ -95,7 +95,7 b" __all__ = ['Completer','IPCompleter']"
 if sys.platform == 'win32':
     PROTECTABLES = ' '
 else:
-    PROTECTABLES = ' ()'
+    PROTECTABLES = ' ()[]{}?=\\|;:\'#*"^&'
 
 #-----------------------------------------------------------------------------
 # Main functions and classes

IPython/core/tests/test_completer.py

@@ -24,11 +24,25 b' def test_protect_filename():'
               ('a  bc',r'a\ \ bc'),
               ('  bc',r'\ \ bc'),
               ]
-    # On posix, we also protect parens
+    # On posix, we also protect parens and other special characters
     if sys.platform != 'win32':
         pairs.extend( [('a(bc',r'a\(bc'),
                        ('a)bc',r'a\)bc'),
                        ('a( )bc',r'a\(\ \)bc'),
+                       ('a[1]bc', r'a\[1\]bc'),
+                       ('a{1}bc', r'a\{1\}bc'),
+                       ('a#bc', r'a\#bc'),
+                       ('a?bc', r'a\?bc'),
+                       ('a=bc', r'a\=bc'),
+                       ('a\\bc', r'a\\bc'),
+                       ('a|bc', r'a\|bc'),
+                       ('a;bc', r'a\;bc'),
+                       ('a:bc', r'a\:bc'),
+                       ("a'bc", r"a\'bc"),
+                       ('a*bc', r'a\*bc'),
+                       ('a"bc', r'a\"bc'),
+                       ('a^bc', r'a\^bc'),
+                       ('a&bc', r'a\&bc'),
                        ] )
     # run the actual tests
     for s1, s2 in pairs: