Stop-gap fix for crash with unicode input.

The fix is highly suboptimal, as we're still ignoring unicode input.
But at least we don't flat out crash, until I can work on it tomorrow.

IPython/core/inputsplitter.py

@@ -958,6 +958,10 b' class IPythonInputSplitter(InputSplitter):'
         if not lines:
             return super(IPythonInputSplitter, self).push(lines)
 
+        # We must ensure all input is pure unicode
+        if type(lines)==str:
+            lines = lines.decode(self.encoding)
+
         lines_list = lines.splitlines()
 
         transforms = [transform_escaped, transform_assign_system,

IPython/core/interactiveshell.py

@@ -2256,10 +2256,18 b' class InteractiveShell(Configurable, Magic):'
 
         # We need to ensure that the source is unicode from here on.
         if type(source)==str:
-            source = source.decode(self.stdin_encoding)
+            usource = source.decode(self.stdin_encoding)
+        else:
+            usource = source
+
+        if 0:  # dbg
+            print 'Source:', repr(source)  # dbg
+            print 'USource:', repr(usource)  # dbg
+            print 'type:', type(source) # dbg
+            print 'encoding', self.stdin_encoding  # dbg
         
         try:
-            code = self.compile(source,filename,symbol)
+            code = self.compile(usource,filename,symbol)
         except (OverflowError, SyntaxError, ValueError, TypeError, MemoryError):
             # Case 1
             self.showsyntaxerror(filename)

IPython/core/tests/test_inputsplitter.py

@@ -347,6 +347,10 b' class InputSplitterTestCase(unittest.TestCase):'
         for block_lines in all_blocks:
             self.check_split(block_lines, compile=False)
 
+    def test_unicode(self):
+        self.isp.push(u"Pérez")
+        self.isp.push(u'\xc3\xa9')
+        self.isp.push("u'\xc3\xa9'")
 
 class InteractiveLoopTestCase(unittest.TestCase):
     """Tests for an interactive loop like a python shell.