From 269778a3983bc56b02c921a306b257b18fe16c47 Mon Sep 17 00:00:00 2001
From: "W. Trevor King" <wking@drexel.edu>
Date: Tue, 23 Jun 2009 19:59:50 -0400
Subject: [PATCH] Use generator instead of default for
 libbe.bug.Bug.extra_strings.

This avoids the problems associated with mutable defaults.
---
 libbe/bug.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libbe/bug.py b/libbe/bug.py
index 89c0266..0f912cf 100644
--- a/libbe/bug.py
+++ b/libbe/bug.py
@@ -185,6 +185,8 @@ class Bug(settings_object.SavedSettingsObject):
                     fset=_set_time,
                     doc="An integer version of .time_string")
 
+    def _extra_strings_generator(self):
+        return []
     def _extra_strings_check_fn(value):
         "Require an iterable full of strings"
         if not hasattr(value, "__iter__"):
@@ -198,7 +200,7 @@ class Bug(settings_object.SavedSettingsObject):
         self._prop_save_settings(old, new)
     @_versioned_property(name="extra_strings",
                          doc="Space for an array of extra strings.  Useful for storing state for functionality implemented purely in becommands/<some_function>.py.",
-                         default=[],
+                         generator=_extra_strings_generator,
                          check_fn=_extra_strings_check_fn,
                          change_hook=_extra_strings_change_hook,
                          mutable=True)
-- 
2.26.2