shortcutFlags :: [Flag] -> IO ()
shortcutFlags flags = do
  usage <- getUsage

  when (Flag_Help             `elem` flags) (bye usage)
  when (Flag_Version          `elem` flags) byeVersion
  when (Flag_InterfaceVersion `elem` flags) (bye (show binaryInterfaceVersion ++ "\n"))
  when (Flag_CompatibleInterfaceVersions `elem` flags)
    (bye (unwords (map show binaryInterfaceVersionCompatibility) ++ "\n"))
  when (Flag_GhcVersion       `elem` flags) (bye (cProjectVersion ++ "\n"))

  when (Flag_PrintGhcPath `elem` flags) $ do
    dir <- fmap fst (getGhcDirs flags)
    bye $ dir ++ "\n"

  when (Flag_PrintGhcLibDir `elem` flags) $ do
    dir <- fmap snd (getGhcDirs flags)
    bye $ dir ++ "\n"

  when (Flag_UseUnicode `elem` flags && Flag_Html `notElem` flags) $
    throwE "Unicode can only be enabled for HTML output."

  when ((Flag_GenIndex `elem` flags || Flag_GenContents `elem` flags)
        && Flag_Html `elem` flags) $
    throwE "-h cannot be used with --gen-index or --gen-contents"

  when ((Flag_GenIndex `elem` flags || Flag_GenContents `elem` flags)
        && Flag_Hoogle `elem` flags) $
    throwE "--hoogle cannot be used with --gen-index or --gen-contents"

  when ((Flag_GenIndex `elem` flags || Flag_GenContents `elem` flags)
        && Flag_LaTeX `elem` flags) $
    throwE "--latex cannot be used with --gen-index or --gen-contents"
  where
    byeVersion = bye $
      "Haddock version " ++ projectVersion ++ ", (c) Simon Marlow 2006\n"
      ++ "Ported to use the GHC API by David Waern 2006-2008\n"


-- | Generate some warnings about potential misuse of @--hyperlinked-source@.
shortcutFlags :: [Flag] -> IO ()
shortcutFlags flags = do
  usage <- getUsage

  when (Flag_Help             `elem` flags) (bye usage)
  when (Flag_Version          `elem` flags) byeVersion
  when (Flag_InterfaceVersion `elem` flags) (bye (show binaryInterfaceVersion ++ "\n"))
  when (Flag_CompatibleInterfaceVersions `elem` flags)
    (bye (unwords (map show binaryInterfaceVersionCompatibility) ++ "\n"))
  when (Flag_GhcVersion       `elem` flags) (bye (cProjectVersion ++ "\n"))

  when (Flag_PrintGhcPath `elem` flags) $ do
    dir <- fmap fst (getGhcDirs flags)
    bye $ dir ++ "\n"

  when (Flag_PrintGhcLibDir `elem` flags) $ do
    dir <- fmap snd (getGhcDirs flags)
    bye $ dir ++ "\n"

  when (Flag_UseUnicode `elem` flags && Flag_Html `notElem` flags) $
    throwE "Unicode can only be enabled for HTML output."

  when ((Flag_GenIndex `elem` flags || Flag_GenContents `elem` flags)
        && Flag_Html `elem` flags) $
    throwE "-h cannot be used with --gen-index or --gen-contents"

  when ((Flag_GenIndex `elem` flags || Flag_GenContents `elem` flags)
        && Flag_Hoogle `elem` flags) $
    throwE "--hoogle cannot be used with --gen-index or --gen-contents"

  when ((Flag_GenIndex `elem` flags || Flag_GenContents `elem` flags)
        && Flag_LaTeX `elem` flags) $
    throwE "--latex cannot be used with --gen-index or --gen-contents"
  where
    byeVersion = bye $
      "Haddock version " ++ projectVersion ++ ", (c) Simon Marlow 2006\n"
      ++ "Ported to use the GHC API by David Waern 2006-2008\n"


-- | Generate some warnings about potential misuse of @--hyperlinked-source@.
shortcutFlags flags = do
  usage <- getUsage

  when (Flag_Help             `elem` flags) (bye usage)
  when (Flag_Version          `elem` flags) byeVersion
  when (Flag_InterfaceVersion `elem` flags) (bye (show binaryInterfaceVersion ++ "\n"))
  when (Flag_CompatibleInterfaceVersions `elem` flags)
    (bye (unwords (map show binaryInterfaceVersionCompatibility) ++ "\n"))
  when (Flag_GhcVersion       `elem` flags) (bye (cProjectVersion ++ "\n"))

  when (Flag_PrintGhcPath `elem` flags) $ do
    dir <- fmap fst (getGhcDirs flags)
    bye $ dir ++ "\n"

  when (Flag_PrintGhcLibDir `elem` flags) $ do
    dir <- fmap snd (getGhcDirs flags)
    bye $ dir ++ "\n"

  when (Flag_UseUnicode `elem` flags && Flag_Html `notElem` flags) $
    throwE "Unicode can only be enabled for HTML output."

  when ((Flag_GenIndex `elem` flags || Flag_GenContents `elem` flags)
        && Flag_Html `elem` flags) $
    throwE "-h cannot be used with --gen-index or --gen-contents"

  when ((Flag_GenIndex `elem` flags || Flag_GenContents `elem` flags)
        && Flag_Hoogle `elem` flags) $
    throwE "--hoogle cannot be used with --gen-index or --gen-contents"

  when ((Flag_GenIndex `elem` flags || Flag_GenContents `elem` flags)
        && Flag_LaTeX `elem` flags) $
    throwE "--latex cannot be used with --gen-index or --gen-contents"
  where
    byeVersion = bye $
      "Haddock version " ++ projectVersion ++ ", (c) Simon Marlow 2006\n"
      ++ "Ported to use the GHC API by David Waern 2006-2008\n"


-- | Generate some warnings about potential misuse of @--hyperlinked-source@.