Remove InteractiveShell's .buffer and .buffer_raw attributes, as well as the .reset_buffer method.

IPython/core/interactiveshell.py

@@ -427,14 +427,6 b' class InteractiveShell(Configurable, Magic):'
 
         # command compiler
         self.compile = CachingCompiler()
-        
-        # User input buffers
-        # NOTE: these variables are slated for full removal, once we are 100%
-        # sure that the new execution logic is solid.  We will delte runlines,
-        # push_line and these buffers, as all input will be managed by the
-        # frontends via an inputsplitter instance.
-        self.buffer = []
-        self.buffer_raw = []
 
         # Make an empty namespace, which extension writers can rely on both
         # existing and NEVER being used by ipython itself.  This gives them a
@@ -1374,7 +1366,7 b' class InteractiveShell(Configurable, Magic):'
             print 'Exception type :',etype
             print 'Exception value:',value
             print 'Traceback      :',tb
-            print 'Source code    :','\n'.join(self.buffer)
+            #print 'Source code    :','\n'.join(self.buffer)
 
         if handler is None: handler = dummy_handler
 
@@ -2318,7 +2310,6 b' class InteractiveShell(Configurable, Magic):'
                 # Reset our crash handler in place
                 sys.excepthook = old_excepthook
         except SystemExit:
-            self.reset_buffer()
             self.showtraceback(exception_only=True)
             warn("To exit: use any of 'exit', 'quit', %Exit or Ctrl-D.", level=1)
         except self.custom_exceptions:
@@ -2336,15 +2327,6 b' class InteractiveShell(Configurable, Magic):'
     # For backwards compatibility
     runcode = run_code
 
-    def reset_buffer(self):
-        """Reset the input buffer."""
-        self.buffer[:] = []
-        self.buffer_raw[:] = []
-        self.input_splitter.reset()
-
-    # For backwards compatibility
-    resetbuffer = reset_buffer
-
     #-------------------------------------------------------------------------
     # Things related to GUI support and pylab
     #-------------------------------------------------------------------------

IPython/core/prefilter.py

@@ -383,10 +383,6 b' class PrefilterManager(Configurable):'
             # previously typed some whitespace that started a continuation
             # prompt, he can break out of that loop with just an empty line.
             # This is how the default python prompt works.
-
-            # Only return if the accumulated input buffer was just whitespace!
-            if ''.join(self.shell.buffer).isspace():
-                self.shell.buffer[:] = []
             return ''
 
         # At this point, we invoke our transformers.
@@ -791,14 +787,7 b' class PrefilterHandler(Configurable):'
         if (continue_prompt and
             self.shell.autoindent and
             line.isspace() and
-            
-            (0 < abs(len(line) - self.shell.indent_current_nsp) <= 2
-             or
-             not self.shell.buffer
-             or
-             (self.shell.buffer[-1]).isspace()
-             )
-            ):
+            0 < abs(len(line) - self.shell.indent_current_nsp) <= 2):
             line = ''
 
         return line

IPython/frontend/terminal/interactiveshell.py

@@ -246,7 +246,7 b' class TerminalInteractiveShell(InteractiveShell):'
                 #double-guard against keyboardinterrupts during kbdint handling
                 try:
                     self.write('\nKeyboardInterrupt\n')
-                    self.resetbuffer()
+                    self.input_splitter.reset()
                     more = False
                 except KeyboardInterrupt:
                     pass