inoculate %clear magic from quarantine

IPython/extensions/clearcmd.py

@@ -1,87 +1,86 b''
 # -*- coding: utf-8 -*-
 """ IPython extension: add %clear magic """
 
 from IPython.core import ipapi
 import gc
 ip = ipapi.get()
 
 def clear_f(self,arg):
     """ Clear various data (e.g. stored history data)
 
     %clear in  - clear input history
     %clear out - clear output history
     %clear shadow_compress - Compresses shadow history (to speed up ipython)
     %clear shadow_nuke - permanently erase all entries in shadow history
     %clear dhist - clear dir history
     %clear array - clear only variables that are NumPy arrays
 
     Examples:
 
     In [1]: clear in
     Flushing input history
 
     In [2]: clear shadow_compress
     Compressing shadow history
 
     In [3]: clear shadow_nuke
     Erased all keys from shadow history
 
     In [4]: clear dhist
     Clearing directory history
     """
 
-    api = self.getapi()
+    api = self.get_ipython()
     user_ns = self.user_ns  # local lookup, heavily used
 
 
     for target in arg.split():
 
         if target == 'out':
             print "Flushing output cache (%d entries)" % len(user_ns['_oh'])
-            self.outputcache.flush()
+            self.displayhook.flush()
 
         elif target == 'in':
             print "Flushing input history"
-            pc = self.outputcache.prompt_count + 1
+            pc = self.displayhook.prompt_count + 1
             for n in range(1, pc):
                 key = '_i'+`n`
                 user_ns.pop(key,None)
                 try:
                     del user_ns[key]
                 except: pass
             # must be done in-place
             self.history_manager.input_hist_parsed[:] = ['\n'] * pc
             self.history_manager.input_hist_raw[:] = ['\n'] * pc
 
         elif target == 'array':
             # Support cleaning up numpy arrays
             try:
                 from numpy import ndarray
                 # This must be done with items and not iteritems because we're
                 # going to modify the dict in-place.
                 for x,val in user_ns.items():
                     if isinstance(val,ndarray):
                         del user_ns[x]
             except AttributeError:
                 print "Clear array only works if Numpy is available."
 
         elif target == 'shadow_compress':
             print "Compressing shadow history"
             api.db.hcompress('shadowhist')
 
         elif target == 'shadow_nuke':
             print "Erased all keys from shadow history "
             for k in ip.db.keys('shadowhist/*'):
                 del ip.db[k]
 
         elif target == 'dhist':
             print "Clearing directory history"
             del user_ns['_dh'][:]
 
     gc.collect()
 
 # Activate the extension
 ip.define_magic("clear",clear_f)
-import ipy_completers
-ipy_completers.quick_completer(
-    '%clear','in out shadow_nuke shadow_compress dhist')
+from IPython.core.completerlib import quick_completer
+quick_completer( '%clear','in out shadow_nuke shadow_compress dhist')