# HG changeset patch
# User Aurelien Campeas <aurelien.campeas@logilab.fr>
# Date 1337155077 -7200
# Node ID eb6a607a0067745bdeb37d67c6a57e1bd2fa545f
# Parent  79534887943ed69eb541ebf980e2fa67a8966d1b
[migration] do not crash if the conf file is already migrated (closes #2361061)

diff -r 79534887943e -r eb6a607a0067 misc/migration/3.15.0_common.py
--- a/misc/migration/3.15.0_common.py	Tue May 15 14:44:45 2012 +0200
+++ b/misc/migration/3.15.0_common.py	Wed May 16 09:57:57 2012 +0200
@@ -1,2 +1,7 @@
-undo_actions = config.cfgfile_parser.get('MAIN', 'undo-support', False)
-config.global_set_option('undo-enabled', bool(undo_actions))
+import ConfigParser
+try:
+    undo_actions = config.cfgfile_parser.get('MAIN', 'undo-support', False)
+except ConfigParser.NoOptionError:
+    pass # this conf. file was probably already migrated
+else:
+    config.global_set_option('undo-enabled', bool(undo_actions))