Complete rewrite and removed legacy bash version

src/libs/prompt_toolkit/enums.py

@@ -0,0 +1,29 @@
+from __future__ import unicode_literals
+
+
+class IncrementalSearchDirection(object):
+    FORWARD = 'FORWARD'
+    BACKWARD = 'BACKWARD'
+
+
+class EditingMode(object):
+    # The set of key bindings that is active.
+    VI = 'VI'
+    EMACS = 'EMACS'
+
+
+#: Name of the search buffer.
+SEARCH_BUFFER = 'SEARCH_BUFFER'
+
+#: Name of the default buffer.
+DEFAULT_BUFFER = 'DEFAULT_BUFFER'
+
+#: Name of the system buffer.
+SYSTEM_BUFFER = 'SYSTEM_BUFFER'
+
+# Dummy buffer. This is the buffer returned by
+# `CommandLineInterface.current_buffer` when the top of the `FocusStack` is
+# `None`. This could be the case when there is some widget has the focus and no
+# actual text editing is possible. This buffer should also never be displayed.
+# (It will never contain any actual text.)
+DUMMY_BUFFER = 'DUMMY_BUFFER'