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, 10 insertions, 10 deletions

diff --git a/testsuite/tests/deriving/should_fail/drvfail009.stderr b/testsuite/tests/deriving/should_fail/drvfail009.stderr
index d9592c4669..fcc5b4c305 100644
--- a/testsuite/tests/deriving/should_fail/drvfail009.stderr
+++ b/testsuite/tests/deriving/should_fail/drvfail009.stderr
@@ -1,23 +1,23 @@
 
 drvfail009.hs:10:31:
-    Can't make a derived instance of ‛C T1’
+    Can't make a derived instance of ‘C T1’
       (even with cunning newtype deriving):
-      ‛C’ does not have arity 1
-    In the newtype declaration for ‛T1’
+      ‘C’ does not have arity 1
+    In the newtype declaration for ‘T1’
 
 drvfail009.hs:13:31:
-    Cannot derive well-kinded instance of form ‛Monad (T2 ...)’
-      Class ‛Monad’ expects an argument of kind ‛* -> *’
-    In the newtype declaration for ‛T2’
+    Cannot derive well-kinded instance of form ‘Monad (T2 ...)’
+      Class ‘Monad’ expects an argument of kind ‘* -> *’
+    In the newtype declaration for ‘T2’
 
 drvfail009.hs:16:33:
-    Can't make a derived instance of ‛Monad T3’
+    Can't make a derived instance of ‘Monad T3’
       (even with cunning newtype deriving):
       cannot eta-reduce the representation type enough
-    In the newtype declaration for ‛T3’
+    In the newtype declaration for ‘T3’
 
 drvfail009.hs:19:42:
-    Can't make a derived instance of ‛Monad T4’
+    Can't make a derived instance of ‘Monad T4’
       (even with cunning newtype deriving):
       cannot eta-reduce the representation type enough
-    In the newtype declaration for ‛T4’
+    In the newtype declaration for ‘T4’