Merged r12163 from trunk (#14590, #14592).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@12211 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/tasks/migrate_from_trac.rake

@@ -762,10 +762,19 @@ namespace :redmine do
     prompt('Target project identifier') {|identifier| TracMigrate.target_project_identifier identifier}
     puts
 
-    # Turn off email notifications
-    Setting.notified_events = []
-
-    TracMigrate.migrate
+    old_notified_events = Setting.notified_events
+    old_password_min_length = Setting.password_min_length
+    begin
+      # Turn off email notifications temporarily
+      Setting.notified_events = []
+      Setting.password_min_length = 4
+      # Run the migration
+      TracMigrate.migrate
+    ensure
+      # Restore previous settings
+      Setting.notified_events = old_notified_events
+      Setting.password_min_length = old_password_min_length
+    end
   end
 end