diff --git a/IPython/core/inputtransformer.py b/IPython/core/inputtransformer.py
index 8a8f3e4..f2c35ba 100644
--- a/IPython/core/inputtransformer.py
+++ b/IPython/core/inputtransformer.py
@@ -389,6 +389,7 @@ def classic_prompt():
 def ipy_prompt():
     """Strip IPython's In [1]:/...: prompts."""
     # FIXME: non-capturing version (?:...) usable?
+    # FIXME: r'^(In \[\d+\]: | {3}\.{3,}: )' clearer?
     prompt_re = re.compile(r'^(In \[\d+\]: |\ \ \ \.\.\.+: )')
     return _strip_prompts(prompt_re)