Made language extension variable and doc more clear.

Author: lukehoersten

haskell-customize.el

@@ -328,9 +328,9 @@ when Data.Map is the candidate.
   :group 'shm
   :type '(repeat 'string))
 
-(defcustom haskell-ghc-supported-languages
+(defcustom haskell-ghc-supported-extensions
   (split-string (shell-command-to-string "ghc --supported-extensions"))
-  "List of language pragmas supported by the installed version of GHC."
+  "List of language extensions supported by the installed version of GHC."
   :group 'haskell
   :type '(repeat string))
 

haskell.el

@@ -92,7 +92,7 @@
                   (search-forward-regexp "\\_<LANGUAGE\\_>" p t))))
            (setq symbol-bounds (bounds-of-thing-at-point 'symbol)))
         (list (car symbol-bounds) (cdr symbol-bounds)
-              haskell-ghc-supported-languages))
+              haskell-ghc-supported-extensions))
        ((setq symbol-bounds (bounds-of-thing-at-point 'symbol))
         (cl-destructuring-bind (start . end) symbol-bounds
           (list start end