Switch from pretty-simple to pretty-show for native output.

Update tests.

Reason:  it turns out that the native output generated by
pretty-simple isn't always readable by the native reader.
According to https://github.com/cdepillabout/pretty-simple/issues/99
it is not a design goal of the library that the rendered values
be readable using 'read'.  This makes it unsuitable for our
purposes.

pretty-show is a bit slower and it uses 4-space indents
(non-configurable), but it doesn't have this serious drawback.

1 files changed, 119 insertions, 125 deletions

diff --git a/test/lhs-test-markdown.native b/test/lhs-test-markdown.native
index db2acd318..42a32697b 100644
--- a/test/lhs-test-markdown.native
+++ b/test/lhs-test-markdown.native
@@ -1,130 +1,124 @@
-[ Header 1
-  ( "lhs-test", [], [] )
-  [ Str "lhs", Space, Str "test" ]
+[ Header
+    1
+    ( "lhs-test" , [] , [] )
+    [ Str "lhs" , Space , Str "test" ]
 , Para
-  [ Code
-    ( "", [], [] ) "unsplit"
-  , Space
-  , Str "is"
-  , Space
-  , Str "an"
-  , Space
-  , Str "arrow"
-  , Space
-  , Str "that"
-  , Space
-  , Str "takes"
-  , Space
-  , Str "a"
-  , Space
-  , Str "pair"
-  , Space
-  , Str "of"
-  , Space
-  , Str "values"
-  , Space
-  , Str "and"
-  , Space
-  , Str "combines"
-  , Space
-  , Str "them"
-  , Space
-  , Str "to"
-  , SoftBreak
-  , Str "return"
-  , Space
-  , Str "a"
-  , Space
-  , Str "single"
-  , Space
-  , Str "value:"
-  ]
+    [ Code ( "" , [] , [] ) "unsplit"
+    , Space
+    , Str "is"
+    , Space
+    , Str "an"
+    , Space
+    , Str "arrow"
+    , Space
+    , Str "that"
+    , Space
+    , Str "takes"
+    , Space
+    , Str "a"
+    , Space
+    , Str "pair"
+    , Space
+    , Str "of"
+    , Space
+    , Str "values"
+    , Space
+    , Str "and"
+    , Space
+    , Str "combines"
+    , Space
+    , Str "them"
+    , Space
+    , Str "to"
+    , SoftBreak
+    , Str "return"
+    , Space
+    , Str "a"
+    , Space
+    , Str "single"
+    , Space
+    , Str "value:"
+    ]
 , CodeBlock
-  ( ""
-  ,
-    [ "haskell", "literate" ]
-  , []
-  ) "unsplit :: (Arrow a) => (b -> c -> d) -> a (b, c) d\nunsplit = arr . uncurry\n          -- arr (\\op (x,y) -> x `op` y)"
+    ( "" , [ "haskell" , "literate" ] , [] )
+    "unsplit :: (Arrow a) => (b -> c -> d) -> a (b, c) d\nunsplit = arr . uncurry\n          -- arr (\\op (x,y) -> x `op` y)"
 , Para
-  [ Code
-    ( "", [], [] ) "(***)"
-  , Space
-  , Str "combines"
-  , Space
-  , Str "two"
-  , Space
-  , Str "arrows"
-  , Space
-  , Str "into"
-  , Space
-  , Str "a"
-  , Space
-  , Str "new"
-  , Space
-  , Str "arrow"
-  , Space
-  , Str "by"
-  , Space
-  , Str "running"
-  , Space
-  , Str "the"
-  , Space
-  , Str "two"
-  , Space
-  , Str "arrows"
-  , Space
-  , Str "on"
-  , Space
-  , Str "a"
-  , SoftBreak
-  , Str "pair"
-  , Space
-  , Str "of"
-  , Space
-  , Str "values"
-  , Space
-  , Str "(one"
-  , Space
-  , Str "arrow"
-  , Space
-  , Str "on"
-  , Space
-  , Str "the"
-  , Space
-  , Str "first"
-  , Space
-  , Str "item"
-  , Space
-  , Str "of"
-  , Space
-  , Str "the"
-  , Space
-  , Str "pair"
-  , Space
-  , Str "and"
-  , Space
-  , Str "one"
-  , Space
-  , Str "arrow"
-  , Space
-  , Str "on"
-  , Space
-  , Str "the"
-  , SoftBreak
-  , Str "second"
-  , Space
-  , Str "item"
-  , Space
-  , Str "of"
-  , Space
-  , Str "the"
-  , Space
-  , Str "pair)."
-  ]
+    [ Code ( "" , [] , [] ) "(***)"
+    , Space
+    , Str "combines"
+    , Space
+    , Str "two"
+    , Space
+    , Str "arrows"
+    , Space
+    , Str "into"
+    , Space
+    , Str "a"
+    , Space
+    , Str "new"
+    , Space
+    , Str "arrow"
+    , Space
+    , Str "by"
+    , Space
+    , Str "running"
+    , Space
+    , Str "the"
+    , Space
+    , Str "two"
+    , Space
+    , Str "arrows"
+    , Space
+    , Str "on"
+    , Space
+    , Str "a"
+    , SoftBreak
+    , Str "pair"
+    , Space
+    , Str "of"
+    , Space
+    , Str "values"
+    , Space
+    , Str "(one"
+    , Space
+    , Str "arrow"
+    , Space
+    , Str "on"
+    , Space
+    , Str "the"
+    , Space
+    , Str "first"
+    , Space
+    , Str "item"
+    , Space
+    , Str "of"
+    , Space
+    , Str "the"
+    , Space
+    , Str "pair"
+    , Space
+    , Str "and"
+    , Space
+    , Str "one"
+    , Space
+    , Str "arrow"
+    , Space
+    , Str "on"
+    , Space
+    , Str "the"
+    , SoftBreak
+    , Str "second"
+    , Space
+    , Str "item"
+    , Space
+    , Str "of"
+    , Space
+    , Str "the"
+    , Space
+    , Str "pair)."
+    ]
 , CodeBlock
-  ( "", [], [] ) "f *** g = first f >>> second g"
-, Para
-  [ Str "Block", Space, Str "quote:" ]
-, BlockQuote
-  [ Para [ Str "foo", Space, Str "bar" ] ]
+    ( "" , [] , [] ) "f *** g = first f >>> second g"
+, Para [ Str "Block" , Space , Str "quote:" ]
+, BlockQuote [ Para [ Str "foo" , Space , Str "bar" ] ]
 ]