fix bizarre edge case where import completion would crash if "cw" argument was

bobf · bobf · commit 9a9b7f5f3852 · 2009-06-17T18:55:50.000+01:00
None - here's the recipe I had that broke it
import pdb
def foo():
    import pdb; pdb.set_trace(

If I change *anything* about that recipe, it doesn't break. Who the hell knows
why. Who the hell cares. It works. \o/
diff --git a/bpython/importcompletion.py b/bpython/importcompletion.py
@@ -32,6 +32,9 @@
 
 def complete(line, cw):
     """Construct a full list of possibly completions for imports."""
+    if not cw:
+        return None
+
     tokens = line.split()
     if tokens[0] not in ['from', 'import']:
         return list()
