GHCi docs: layout rule is respected inside :{ :}

Summary:
I don't know if or when this changed, but the documentation on :{ :}
(multiline input) seems out of date. Layout rule works fine. I added a
regression test.

Reviewers: austin

Subscribers: thomie, bgamari

Differential Revision: https://phabricator.haskell.org/D1013

1 files changed, 18 insertions, 16 deletions

diff --git a/testsuite/tests/ghci/scripts/ghci023.stdout b/testsuite/tests/ghci/scripts/ghci023.stdout
index 010fe50878..61a859a73c 100644
--- a/testsuite/tests/ghci/scripts/ghci023.stdout
+++ b/testsuite/tests/ghci/scripts/ghci023.stdout
@@ -1,16 +1,18 @@
--- testing ghci multiline commands :{ .. :}

--- via stdin

-(1,2,3)

-catMaybes :: [Maybe a] -> [a]

-fromJust :: Maybe a -> a

-fromMaybe :: a -> Maybe a -> a

-isJust :: Maybe a -> Bool

-isNothing :: Maybe a -> Bool

-listToMaybe :: [a] -> Maybe a

-mapMaybe :: (a -> Maybe b) -> [a] -> [b]

-maybe :: b -> (a -> b) -> Maybe a -> b

-maybeToList :: Maybe a -> [a]

-data Maybe a = Nothing | Just a

--- via readFile

-(True,False)

-id :: a -> a

+-- testing ghci multiline commands :{ .. :}
+-- via stdin
+(1,2,3)
+-- layout rule instead of explicit braces and semicolons works too
+(1,2,3)
+catMaybes :: [Maybe a] -> [a]
+fromJust :: Maybe a -> a
+fromMaybe :: a -> Maybe a -> a
+isJust :: Maybe a -> Bool
+isNothing :: Maybe a -> Bool
+listToMaybe :: [a] -> Maybe a
+mapMaybe :: (a -> Maybe b) -> [a] -> [b]
+maybe :: b -> (a -> b) -> Maybe a -> b
+maybeToList :: Maybe a -> [a]
+data Maybe a = Nothing | Just a
+-- via readFile
+(True,False)
+id :: a -> a