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diff --git a/compiler/hsSyn/HsImpExp.lhs b/compiler/hsSyn/HsImpExp.lhs
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+%
+% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
+%
+\section[HsImpExp]{Abstract syntax: imports, exports, interfaces}
+
+\begin{code}
+module HsImpExp where
+
+#include "HsVersions.h"
+
+import Module		( Module )
+import Outputable
+import FastString
+import SrcLoc		( Located(..) )
+import Char		( isAlpha )
+\end{code}
+
+%************************************************************************
+%*									*
+\subsection{Import and export declaration lists}
+%*									*
+%************************************************************************
+
+One per \tr{import} declaration in a module.
+\begin{code}
+type LImportDecl name = Located (ImportDecl name)
+
+data ImportDecl name
+  = ImportDecl	  (Located Module)		-- module name
+		  Bool				-- True <=> {-# SOURCE #-} import
+		  Bool				-- True => qualified
+		  (Maybe Module)		-- as Module
+		  (Maybe (Bool, [LIE name]))	-- (True => hiding, names)
+\end{code}
+
+\begin{code}
+instance (Outputable name) => Outputable (ImportDecl name) where
+    ppr (ImportDecl mod from qual as spec)
+      = hang (hsep [ptext SLIT("import"), ppr_imp from, 
+                    pp_qual qual, ppr mod, pp_as as])
+	     4 (pp_spec spec)
+      where
+	pp_qual False   = empty
+	pp_qual True	= ptext SLIT("qualified")
+
+	pp_as Nothing   = empty
+	pp_as (Just a)  = ptext SLIT("as ") <+> ppr a
+
+	ppr_imp True  = ptext SLIT("{-# SOURCE #-}")
+	ppr_imp False = empty
+
+	pp_spec Nothing = empty
+	pp_spec (Just (False, spec))
+			= parens (interpp'SP spec)
+	pp_spec (Just (True, spec))
+			= ptext SLIT("hiding") <+> parens (interpp'SP spec)
+
+ideclName (ImportDecl mod_nm _ _ _ _) = mod_nm
+\end{code}
+
+%************************************************************************
+%*									*
+\subsection{Imported and exported entities}
+%*									*
+%************************************************************************
+
+\begin{code}
+type LIE name = Located (IE name)
+
+data IE name
+  = IEVar		name
+  | IEThingAbs          name		-- Class/Type (can't tell)
+  | IEThingAll          name		-- Class/Type plus all methods/constructors
+  | IEThingWith		name [name]	-- Class/Type plus some methods/constructors
+  | IEModuleContents    Module		-- (Export Only)
+\end{code}
+
+\begin{code}
+ieName :: IE name -> name
+ieName (IEVar n) 	 = n
+ieName (IEThingAbs  n)   = n
+ieName (IEThingWith n _) = n
+ieName (IEThingAll  n)   = n
+
+ieNames :: IE a -> [a]
+ieNames (IEVar            n   ) = [n]
+ieNames (IEThingAbs       n   ) = [n]
+ieNames (IEThingAll       n   ) = [n]
+ieNames (IEThingWith      n ns) = n:ns
+ieNames (IEModuleContents _   ) = []
+\end{code}
+
+\begin{code}
+instance (Outputable name) => Outputable (IE name) where
+    ppr (IEVar	        var)	= pprHsVar var
+    ppr (IEThingAbs	thing)	= ppr thing
+    ppr (IEThingAll	thing)	= hcat [ppr thing, text "(..)"]
+    ppr (IEThingWith thing withs)
+	= ppr thing <> parens (fsep (punctuate comma (map pprHsVar withs)))
+    ppr (IEModuleContents mod)
+	= ptext SLIT("module") <+> ppr mod
+\end{code}
+
+\begin{code}
+pprHsVar :: Outputable name => name -> SDoc
+pprHsVar v | isOperator ppr_v = parens ppr_v
+	   | otherwise	      = ppr_v
+	   where
+	     ppr_v = ppr v
+
+isOperator :: SDoc -> Bool
+isOperator ppr_v 
+  = case showSDocUnqual ppr_v of
+	('(':s)   -> False		-- (), (,) etc
+	('[':s)   -> False		-- []
+	('$':c:s) -> not (isAlpha c)	-- Don't treat $d as an operator
+	(':':c:s) -> not (isAlpha c)	-- Don't treat :T as an operator
+	('_':s)   -> False		-- Not an operator
+	(c:s)     -> not (isAlpha c)	-- Starts with non-alpha
+	other     -> False
+    -- We use (showSDoc (ppr v)), rather than isSymOcc (getOccName v) simply so
+    -- that we don't need NamedThing in the context of all these functions.
+    -- Gruesome, but simple.
+\end{code}
+