config/databases.yml:
  class:    sfDatabaseConfigHandler

config/settings.yml:
  class:    sfDefineEnvironmentConfigHandler
  param:
    prefix: sf_

config/app.yml:
  class:    sfDefineEnvironmentConfigHandler
  param:
    prefix: app_

config/factories.yml:
  class:    sfFactoryConfigHandler

config/core_compile.yml:
  class:    sfCompileConfigHandler

config/filters.yml:
  class:    sfFilterConfigHandler

config/routing.yml:
  class:    sfRoutingConfigHandler

config/services.yml:
  class:    sfServiceConfigHandler
  param:
    base_class: sfServiceContainer

modules/*/config/generator.yml:
  class:    sfGeneratorConfigHandler

modules/*/config/view.yml:
  class:    sfViewConfigHandler

modules/*/config/security.yml:
  class:    sfSecurityConfigHandler

modules/*/config/cache.yml:
  class:    sfCacheConfigHandler

modules/*/config/module.yml:
  class:    sfDefineEnvironmentConfigHandler
  param:
    prefix: mod_
    module: true

config/databases.yml:
  class:    sfDatabaseConfigHandler

config/settings.yml:
  class:    sfDefineEnvironmentConfigHandler
  param:
    prefix: sf_

config/app.yml:
  class:    sfDefineEnvironmentConfigHandler
  param:
    prefix: app_

config/factories.yml:
  class:    sfFactoryConfigHandler

config/core_compile.yml:
  class:    sfCompileConfigHandler

config/filters.yml:
  class:    sfFilterConfigHandler

config/routing.yml:
  class:    sfRoutingConfigHandler

config/services.yml:
  class:    sfServiceConfigHandler
  param:
    base_class: sfServiceContainer

modules/*/config/view.yml:
  class:    sfViewConfigHandler

modules/*/config/security.yml:
  class:    sfSecurityConfigHandler

modules/*/config/cache.yml:
  class:    sfCacheConfigHandler

modules/*/config/module.yml:
  class:    sfDefineEnvironmentConfigHandler
  param:
    prefix: mod_
    module: true

Drop generator.yml config handler configuration
Drop generator.yml config handler configuration
