Migrate mkVty docs on table loading to Config

src/Graphics/Vty.hs

@@ -112,15 +112,6 @@ data Vty =
 -- precedence. See "Graphics.Vty.Config".
 --
 -- For most applications @mkVty defaultConfig@ is sufficient.
---
--- If the configuration's 'allowCustomUnicodeWidthTables' is set
--- to 'Nothing' or 'Just True', this will use the current value of
--- 'TERM' and the configuation's width table settings to attempt to
--- load a custom unicode character width table if one has not already
--- been loaded in this process. If the load is attempted and fails,
--- information about the failure will be logged to the debug log if the
--- configuration specifies one. If no custom table is loaded (or if a
--- load fails), the built-in character width table will be used.
 mkVty :: Config -> IO Vty
 mkVty appConfig = do
     config <- (<> appConfig) <$> userConfig

src/Graphics/Vty/Config.hs

@@ -178,9 +178,16 @@ data Config =
            , termWidthMaps :: [(String, FilePath)]
            -- ^ Terminal width map files.
            , allowCustomUnicodeWidthTables :: Maybe Bool
-           -- ^ Whether to permit custom Unicode width table loading.
+           -- ^ Whether to permit custom Unicode width table loading by
-           -- 'Just False' indicates that table loading should not be
+           -- 'Graphics.Vty.mkVty'. @'Just' 'False'@ indicates that
-           -- performed. Other values permit table loading.
+           -- table loading should not be performed. Other values permit
+           -- table loading.
+           --
+           -- If a table load is attempted and fails, information
+           -- about the failure will be logged to the debug log if the
+           -- configuration specifies one. If no custom table is loaded
+           -- (or if a load fails), the built-in character width table
+           -- will be used.
            }
            deriving (Show, Eq)