More notes about r78946, this time describing the restore_signals behavior.

580d60ce · Gregory P. Smith · a31f57cc · 580d60ce
Commit 580d60ce authored Mar 14, 2010 by Gregory P. Smith
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@@ -287,6 +287,11 @@ Library
  by an extension module (_posixsubprocess) so that the fork()+exec() can be
  done safely without the possibility of deadlock in multithreaded applications.

+- subprocess.Popen now has restore_signals and start_new_session features.
+  The default of restore_signals=True is a new behavior compared to earlier
+  Python versions.  This means that signals such as SIGPIPE are not ignored
+  by default in subprocesses launched by Python (Issue #1652).
+
 - Issue #6472: The xml.etree package is updated to ElementTree 1.3.  The
  cElementTree module is updated too.