Backport PR ipython#2783: Prefilter shouldn't touch execution_count

minrk · minrk · commit 1d9f2d9ea1bc · 2013-03-04T15:42:19.000-08:00
Having gone through the various things that can call it, I'm pretty sure that there's no need for prefilter to be modifying the execution/prompt counter. And in testing, I can't construct an example that hits this bit of code. If we agree on this, it supersedes ipython#2623.
diff --git a/IPython/core/prefilter.py b/IPython/core/prefilter.py
@@ -323,9 +323,6 @@ def prefilter_line(self, line, continue_prompt=False):
 
         normal_handler = self.get_handler_by_name('normal')
         if not stripped:
-            if not continue_prompt:
-                self.shell.displayhook.prompt_count -= 1
-
             return normal_handler.handle(line_info)
 
         # special handlers are only allowed for single line statements
