Use U+2018 instead of U+201B quote mark in compiler messages

This matches GCC's choice of Unicode quotation marks (i.e. U+2018 and U+2019)
and therefore looks more familiar on the console. This addresses #2507.

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

1 files changed, 8 insertions, 8 deletions

diff --git a/testsuite/tests/deriving/should_fail/T4846.stderr b/testsuite/tests/deriving/should_fail/T4846.stderr
index dde64de90f..6024165c25 100644
--- a/testsuite/tests/deriving/should_fail/T4846.stderr
+++ b/testsuite/tests/deriving/should_fail/T4846.stderr
@@ -1,14 +1,14 @@
 
 T4846.hs:29:1:
-    Could not coerce from ‛Expr Bool’ to ‛Expr BOOL’
-      because the first type argument of ‛Expr’ has role Nominal,
-      but the arguments ‛Bool’ and ‛BOOL’ differ
-      arising from a use of ‛GHC.Prim.coerce’
+    Could not coerce from ‘Expr Bool’ to ‘Expr BOOL’
+      because the first type argument of ‘Expr’ has role Nominal,
+      but the arguments ‘Bool’ and ‘BOOL’ differ
+      arising from a use of ‘GHC.Prim.coerce’
     In the expression:
         GHC.Prim.coerce (mkExpr :: Expr Bool) :: Expr BOOL
-    In an equation for ‛mkExpr’:
+    In an equation for ‘mkExpr’:
         mkExpr = GHC.Prim.coerce (mkExpr :: Expr Bool) :: Expr BOOL
-    When typechecking the code for  ‛mkExpr’
-      in a standalone derived instance for ‛B BOOL’:
+    When typechecking the code for  ‘mkExpr’
+      in a standalone derived instance for ‘B BOOL’:
       To see the code I am typechecking, use -ddump-deriv
-    In the instance declaration for ‛B BOOL’
+    In the instance declaration for ‘B BOOL’