Add test for issue #178

Author: sheaf

test/test.sh

@@ -13,6 +13,7 @@ ticketsBroken=(
   "T0153.hs"
   "T0165.hs"
   "T0167.hs"
+  "T0178.hs"
 )
 
 # Colours used to display test outputs.

test/tickets/T0178.hs

@@ -0,0 +1,19 @@
+-- SYNTAX TEST "source.haskell" "Multiline type signature in brackets"
+
+proof ::  SomeVeryLongExpression  a b
+      :~: SomeOtherLongExpression c d
+--    ^^^ 	storage.type.operator.infix.haskell
+--        ^^^^^^^^^^^^^^^^^^^^^^^ storage.type.haskell
+--                                ^ ^	variable.other.generic-type.haskell
+
+quux ( proof ::  SomeVeryLongExpression  a b
+             :~: SomeOtherLongExpression c d
+--           ^^^ 	storage.type.operator.infix.haskell
+--               ^^^^^^^^^^^^^^^^^^^^^^^ 	storage.type.haskell
+--                                       ^ ^	variable.other.generic-type.haskell
+     )
+ 
+quux [ x :: a
+              B c ]
+--            ^ storage.type.haskell
+--              ^ variable.other.generic-type.haskell