def do_upgrade(env, ver, cursor):
    config = env.config

    config.set('svn', 'authz_file',
               config.get('trac', 'authz_file'))
    config.set('svn', 'authz_module_name',
               config.get('trac', 'authz_module_name'))
    config.set('versioncontrol', 'default_repository_type',
               config.get('trac', 'repository_type', 'svn'))

    config.remove('trac', 'authz_file')
    config.remove('trac', 'authz_module_name')
    config.remove('trac', 'repository_type')
    backup_config_file(env, '.db39.bak')
    config.save()
Find an anchor or button by containing text, as well as standard
dataset/ETHPy150Open edgewall/trac/trac/upgrades/db39.py/do_upgrade--crossover with--dataset/ETHPy150Open jmcarp/robobrowser/robobrowser/browser.py/RoboBrowser.get_link