* Fixed bug with terminal-style tab completion for multi-line input.

* Improved tab completion for long text with '.' and path separators.

IPython/frontend/qt/console/console_widget.py

@@ -563,11 +563,15 b' class ConsoleWidget(Configurable, QtGui.QWidget):'
             the prompt region.
         """
         cursor = self._get_prompt_cursor()
-        found_block = cursor.movePosition(QtGui.QTextCursor.NextBlock)
-        if found_block:
-            while found_block and \
-                    cursor.block().text().startsWith(self._continuation_prompt):
-                found_block = cursor.movePosition(QtGui.QTextCursor.NextBlock)
+        if cursor.movePosition(QtGui.QTextCursor.NextBlock):
+            prompt = self._continuation_prompt.lstrip()
+            while True:
+                temp_cursor = QtGui.QTextCursor(cursor)
+                temp_cursor.select(QtGui.QTextCursor.BlockUnderCursor)
+                text = str(temp_cursor.selection().toPlainText()).lstrip()
+                if not text.startswith(prompt) or \
+                        not cursor.movePosition(QtGui.QTextCursor.NextBlock):
+                    break
             cursor.movePosition(QtGui.QTextCursor.Left) # Grab the newline.
             cursor.movePosition(QtGui.QTextCursor.End,
                                 QtGui.QTextCursor.KeepAnchor)

IPython/frontend/qt/console/ipython_widget.py

@@ -12,6 +12,7 b''
 
 # Standard library imports
 from collections import namedtuple
+import re
 from subprocess import Popen
 
 # System library imports
@@ -127,12 +128,20 b' class IPythonWidget(FrontendWidget):'
         cursor = self._get_cursor()
         if rep['parent_header']['msg_id'] == self._complete_id and \
                 cursor.position() == self._complete_pos:
-            # The completer tells us what text was actually used for the
-            # matching, so we must move that many characters left to apply the
-            # completions.
+            matches = rep['content']['matches']
             text = rep['content']['matched_text']
+
+            # Clean up matches with '.'s and path separators.
+            parts = re.split(r'[./\\]', text) 
+            sep_count = len(parts) - 1
+            if sep_count:
+                chop_length = sum(map(len, parts[:sep_count])) + sep_count
+                matches = [ match[chop_length:] for match in matches ]
+                text = text[chop_length:]
+
+            # Move the cursor to the start of the match and complete.
             cursor.movePosition(QtGui.QTextCursor.Left, n=len(text))
-            self._complete_with_items(cursor, rep['content']['matches'])
+            self._complete_with_items(cursor, matches)
 
     def _handle_history_reply(self, msg):
         """ Implemented to handle history replies, which are only supported by