diff -r 1ab1a04785bc -r 4e90138f3046 Tools/clinic/clinic.py
--- a/Tools/clinic/clinic.py	Mon Feb 10 10:30:46 2014 -0600
+++ b/Tools/clinic/clinic.py	Mon Feb 10 12:01:11 2014 -0600
@@ -66,6 +66,8 @@
 
 unknown = Unknown()
 
+sig_end_marker = '--'
+
 
 def _text_accumulator():
     text = []
@@ -555,8 +557,13 @@
             add(quoted_for_c_string(line))
             add('\\n"\n')
 
-        text.pop()
-        add('"')
+        if text[-2] == sig_end_marker:
+            # If we only have a signature, add the blank line that the
+            # __text_signature__ getter expects to be there.
+            add('"\\n"')
+        else:
+            text.pop()
+            add('"')
         return ''.join(text)
 
     def output_templates(self, f):
@@ -3969,7 +3976,7 @@
         #     add(f.return_converter.py_default)
 
         if not f.docstring_only:
-            add("\n--\n")
+            add("\n" + sig_end_marker + "\n")
 
         docstring_first_line = output()