X-Git-Url: https://git.distorted.org.uk/~mdw/profile/blobdiff_plain/a894ae88f9bf8b8b7c4c0c6c17972c4bbe21874e..48a9c9c1a60f4f5ebc71a5e5269b01109c9dcfa4:/dot/ipython-key-bindings.py?ds=sidebyside

diff --git a/dot/ipython-key-bindings.py b/dot/ipython-key-bindings.py
index abb1b01..8795404 100644
--- a/dot/ipython-key-bindings.py
+++ b/dot/ipython-key-bindings.py
@@ -1,30 +1,35 @@
 ### -*-python -*-
 
-import IPython as IPY
-import prompt_toolkit as PTK
-
-def ding():
-  with open('/dev/tty', 'w') as f: f.write('\a')
-
-## Key bindings.  Alas, IPython's attempt at Emacs keybindings is abysmal.
-K = PTK.keys.Keys
-F = PTK.filters
-BUF = PTK.enums.DEFAULT_BUFFER
-ipy = IPY.get_ipython()
-try: pt = ipy.pt_cli
-except AttributeError: pass
-else:
+def __mdw_hack_bindings():
+
+  import IPython as IPY
+  import prompt_toolkit as PTK
+
+  def ding():
+    with open('/dev/tty', 'w') as f: f.write('\a')
+
+  ## Key bindings.  Alas, IPython's attempt at Emacs keybindings is abysmal.
+  K = PTK.keys.Keys
+  F = PTK.filters
+  BUF = PTK.enums.DEFAULT_BUFFER
+  ipy = IPY.get_ipython()
+  try: pt = ipy.pt_cli
+  except AttributeError: return
+
   reg = pt.application.key_bindings_registry
   try: bind = reg.add_binding
-  except AttributeError: bind = PTK.key_binding.bindings.utils.create_handle_decorator(reg)
+  except AttributeError:
+    bind = PTK.key_binding.bindings.utils.create_handle_decorator(reg)
 
   def inhibit_history_search(buf, fn):
-    searchp, searchtext = buf.enable_history_search, buf.history_search_text
+    searchp, searchtext = \
+      buf.enable_history_search, buf.history_search_text
     buf.enable_history_search = F.Never()
     try:
       fn()
     finally:
-      buf.enable_history_search, buf.history_search_text = searchp, searchtext
+      buf.enable_history_search, buf.history_search_text = \
+        searchp, searchtext
   @bind(K.ControlP)
   def prev_line(ev):
     buf = ev.current_buffer
@@ -42,3 +47,6 @@ else:
 
   bind(K.Escape, u'p')(lambda ev: ev.current_buffer.history_backward())
   bind(K.Escape, u'n')(lambda ev: ev.current_buffer.history_forward())
+
+__mdw_hack_bindings()
+del __mdw_hack_bindings