Merge branch 'ghc-8.4' into ghc-8.6

CHANGES.md

+## TBA
+
+ * Make `--package-version` optional for `--hoogle` (#899)
+
 ## Changes in version 2.21.0
 
  * Overhaul handling of data declarations in XHTML and LaTeX. Adds support for

doc/markup.rst

@@ -776,14 +776,14 @@ Special Characters
 ~~~~~~~~~~~~~~~~~~
 
 The following characters have special meanings in documentation
-comments: ``\\``, ``/``, ``'``, ``\```, ``"``, ``@``, ``<``, ``$``. To insert a
+comments: ``\``, ``/``, ``'``, `````, ``"``, ``@``, ``<``, ``$``, ``#``. To insert a
 literal occurrence of one of these special characters, precede it with a
-backslash (``\\``).
+backslash (``\``).
 
 Additionally, the character ``>`` has a special meaning at the beginning
 of a line, and the following characters have special meanings at the
 beginning of a paragraph: ``*``, ``-``. These characters can also be
-escaped using ``\\``.
+escaped using ``\``.
 
 Furthermore, the character sequence ``>>>`` has a special meaning at the
 beginning of a line. To escape it, just prefix the characters in the

haddock-api/src/Haddock.hs

@@ -48,6 +48,7 @@ import Control.Exception
 import Data.Maybe
 import Data.IORef
 import Data.Map (Map)
+import Data.Version (makeVersion)
 import qualified Data.Map as Map
 import System.IO
 import System.Exit
@@ -363,9 +364,13 @@ render dflags flags sinceQual qual ifaces installedIfaces extSrcMap = do
   -- might want to fix that if/when these two get some work on them
   when (Flag_Hoogle `elem` flags) $ do
     case pkgNameVer of
-      (Just (PackageName pkgNameFS), Just pkgVer) ->
-          let pkgNameStr | unpackFS pkgNameFS == "main" && title /= [] = title
-                         | otherwise = unpackFS pkgNameFS
+      (Just (PackageName pkgNameFS), mpkgVer) ->
+          let
+            pkgNameStr | unpackFS pkgNameFS == "main" && title /= [] = title
+                       | otherwise = unpackFS pkgNameFS
+
+            pkgVer =
+              fromMaybe (makeVersion []) mpkgVer
           in ppHoogle dflags' pkgNameStr pkgVer title (fmap _doc prologue)
                visibleIfaces odir
       _ -> putStrLn . unlines $

haddock-api/src/Haddock/Interface.hs

@@ -84,6 +84,7 @@ processModules
 processModules verbosity modules flags extIfaces = do
 #if defined(mingw32_HOST_OS)
   -- Avoid internal error: <stderr>: hPutChar: invalid argument (invalid character)' non UTF-8 Windows
+  liftIO $ hSetEncoding stdout $ mkLocaleEncoding TransliterateCodingFailure
   liftIO $ hSetEncoding stderr $ mkLocaleEncoding TransliterateCodingFailure
 #endif