bpo-15786: Fix IDLE autocomplete return problem. (#2198)

terryjreedy · web-flow · commit 32fd874afe55 · 2017-06-14T15:43:15.000-04:00
Before, &lt;return&gt; would not, for instance, complete 're.c' to 're.compile' even with 'compile' highlighted.  Now it does.  Before, &lt;return&gt; was inserted into text, which in Shell meant compile() and possibly execute.  Now cursor is left after completion.
diff --git a/Lib/idlelib/autocomplete_w.py b/Lib/idlelib/autocomplete_w.py
@@ -325,8 +325,9 @@ def keypress_event(self, event):
             return "break"
 
         elif keysym == "Return":
+            self.complete()
             self.hide_window()
-            return None
+            return 'break'
 
         elif (self.mode == COMPLETE_ATTRIBUTES and keysym in
               ("period", "space", "parenleft", "parenright", "bracketleft",
