Comma-separated SPECIALIZE types

data/examples/declaration/signature/specialize/specialize-out.hs

@@ -11,5 +11,14 @@ baz :: Num a => a -> a
 baz = id
 {-# SPECIALIZE [~2] baz
   :: Int
-  -> Int
+     -> Int
   #-}
+
+{-# SPECIALIZE fits13Bits :: Int -> Bool, Integer -> Bool #-}
+{-# SPECIALIZE fits13Bits
+  :: Int
+     -> Bool
+  , Integer -> Bool
+  #-}
+fits13Bits :: Integral a => a -> Bool
+fits13Bits x = x >= -4096 && x < 4096

data/examples/declaration/signature/specialize/specialize.hs

@@ -14,3 +14,11 @@ baz = id
 {-# SPECIALIZE [~2] baz
       :: Int
       -> Int #-}
+
+{-# SPECIALIZE fits13Bits :: Int -> Bool, Integer -> Bool #-}
+{-# SPECIALIZE fits13Bits
+        :: Int
+        -> Bool
+        , Integer -> Bool #-}
+fits13Bits :: Integral a => a -> Bool
+fits13Bits x = x >= -4096 && x < 4096

src/Ormolu/Printer/Meat/Declaration/Signature.hs

@@ -125,10 +125,7 @@ p_specSig name ts InlinePragma {..} = pragmaBraces $ do
   breakpoint
   inci $ do
     txt ":: "
-    -- XXX Not at all sure why ts is a list of @LHsSigType GhcPs@ things, it
-    -- appears that we only can give one type to specialize to per pragma.
-    -- Maybe I'm mistaken.
-    located (hsib_body (head ts)) p_hsType
+    velt (withSep comma (located' p_hsType) (hsib_body <$> ts))
 
 p_activation :: Activation -> R ()
 p_activation = \case