如何在GHCI中列出已启用的语言扩展?

jbw*_*ton 3 haskell ghci

我知道我能够设定与语言扩展

:set  -XWhateverExtension
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但是如何列出当前启用的扩展?

chi*_*chi 5

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