如何从 GHCI 中列出启用的语言扩展?

How do I list enabled language extensions from within GHCI?

我知道我可以设置语言扩展

:set  -XWhateverExtension

但是我如何列出当前启用的扩展程序?

> :show language
base language is: Haskell2010
with the following modifiers:
  -XNoDatatypeContexts
  -XExplicitForAll
  -XNondecreasingIndentation
  -XPatternSignatures
  -XScopedTypeVariables