Imports: Respect separate_lists for (..) imports

Fixes #320

Author: jaspervdj

lib/Language/Haskell/Stylish/Step/Imports.hs

@@ -309,13 +309,13 @@ printQualified Options{..} padNames stats (L _ decl) = do
 
 --------------------------------------------------------------------------------
 printImport :: Options -> IE GhcPs -> P ()
-printImport Options{..} (IEVar _ name) = do
+printImport _ (IEVar _ name) = do
     printIeWrappedName name
 printImport _ (IEThingAbs _ name) = do
     printIeWrappedName name
-printImport _ (IEThingAll _ name) = do
+printImport Options{..} (IEThingAll _ name) = do
     printIeWrappedName name
-    space
+    when separateLists space
     putText "(..)"
 printImport _ (IEModuleContents _ (L _ m)) = do
     putText (moduleNameString m)

tests/Language/Haskell/Stylish/Step/Imports/Tests.hs

@@ -61,6 +61,7 @@ tests = testGroup "Language.Haskell.Stylish.Step.Imports.Tests"
     , testCase "case 27" case27
     , testCase "case 28" case28
     , testCase "case 29" case29
+    , testCase "case 30" case30
     ]
 
 
@@ -834,3 +835,10 @@ case29 = assertSnippet (step Nothing $ fromImportAlign Group)
     , ""
     , "import A (A)"
     ]
+
+
+--------------------------------------------------------------------------------
+case30 :: Assertion
+case30 = assertSnippet (step Nothing defaultOptions {separateLists = False})
+    ["import           Data.Monoid (Monoid (..))"]
+    ["import           Data.Monoid (Monoid(..))"]