Where can I find a list of all GHC extensions

Question

I wanted to use {-# LANGUAGE OverloadedStrings #-} but I forgot how it's called. This kind of thing isn't hoogle-able, and also it takes some time finding using google*.

Is there somewhere a list of GHC extensions named as they are in the LANGUAGE pragma?

* My googling search journey:

• Google
• Haskell at wikipedia
• GHC at wikipedia
• GHC language features
• Overload string literals
• OverloadedStrings

Answer 1

ghci's tab-completion knows. Type :set -X at a ghci prompt, then hit Tab, and you'll get a full list. Or :set -XFoo then Tab will get you a list of all extensions beginning with Foo.