[migration] Improve update of in-memory schema during 3.18 CWAttribute.defaultval change We weren't updating the schema properly so a bunch of structures still had the old rdef with 'String' as object. That caused failures to add new attributes later in the migration as their default value would be a Binary object but the schema would expect a String. Closes #3683640

     1

import ConfigParser

     2

try:

     3

    undo_actions = config.cfgfile_parser.get('MAIN', 'undo-support', False)

     4

except ConfigParser.NoOptionError:

     5

    pass # this conf. file was probably already migrated

     6

else:

     7

    config.global_set_option('undo-enabled', bool(undo_actions))