fix+test %who_ls type checking, skip %who doctests

due to new docstring output being based on clean user_ns.

closes gh-228

IPython/core/magic.py

@@ -727,6 +727,7 b' Currently the magic system has the following functions:\\n"""'
         except:
             shell.showtraceback()
         
+    @testdec.skip_doctest
     def magic_who_ls(self, parameter_s=''):
         """Return a sorted list of all interactive variables.
 
@@ -762,11 +763,12 b' Currently the magic system has the following functions:\\n"""'
         typelist = parameter_s.split()
         if typelist:
             typeset = set(typelist)
-            out = [i for i in out if type(i).__name__ in typeset]
+            out = [i for i in out if type(user_ns[i]).__name__ in typeset]
 
         out.sort()
         return out
         
+    @testdec.skip_doctest
     def magic_who(self, parameter_s=''):
         """Print all interactive variables, with some minimal formatting.
 
@@ -827,6 +829,7 b' Currently the magic system has the following functions:\\n"""'
                 print
         print
 
+    @testdec.skip_doctest
     def magic_whos(self, parameter_s=''):
         """Like %who, but gives some extra information about each variable.
 

IPython/core/tests/test_magic.py

@@ -362,3 +362,28 b' def test_xmode():'
     for i in range(3):
         _ip.magic("xmode")
     nt.assert_equal(_ip.InteractiveTB.mode, xmode)
+
+def doctest_who():
+    """doctest for %who
+    
+    In [1]: %reset -f
+    
+    In [2]: alpha = 123
+    
+    In [3]: beta = 'beta'
+    
+    In [4]: %who int
+    alpha
+    
+    In [5]: %who str
+    beta
+    
+    In [6]: %whos
+    Variable   Type    Data/Info
+    ----------------------------
+    alpha      int     123
+    beta       str     beta
+    
+    In [7]: %who_ls
+    Out[7]: ['alpha', 'beta']
+    """
  No newline at end of file