adeiu, MissingH

Removed dependency on MissingH, instead depending on the split
library.

After laying groundwork for this since 2015, it
was mostly straightforward. Added Utility.Tuple and
Utility.Split. Eyeballed System.Path.WildMatch while implementing
the same thing.

Since MissingH's progress meter display was being used, I re-implemented
my own. Bonus: Now progress is displayed for transfers of files of
unknown size.

This commit was sponsored by Shane-o on Patreon.

Utility/FileSystemEncoding.hs

@@ -19,6 +19,10 @@ module Utility.FileSystemEncoding (
 	encodeW8NUL,
 	decodeW8NUL,
 	truncateFilePath,
+	s2w8,
+	w82s,
+	c2w8,
+	w82c,
 ) where
 
 import qualified GHC.Foreign as GHC
@@ -27,15 +31,14 @@ import Foreign.C
 import System.IO
 import System.IO.Unsafe
 import Data.Word
-import Data.Bits.Utils
 import Data.List
-import Data.List.Utils
 import qualified Data.ByteString.Lazy as L
 #ifdef mingw32_HOST_OS
 import qualified Data.ByteString.Lazy.UTF8 as L8
 #endif
 
 import Utility.Exception
+import Utility.Split
 
 {- Makes all subsequent Handles that are opened, as well as stdio Handles,
  - use the filesystem encoding, instead of the encoding of the current
@@ -139,14 +142,26 @@ decodeW8 = s2w8 . _encodeFilePath
 
 {- Like encodeW8 and decodeW8, but NULs are passed through unchanged. -}
 encodeW8NUL :: [Word8] -> FilePath
-encodeW8NUL = intercalate nul . map encodeW8 . split (s2w8 nul)
+encodeW8NUL = intercalate [nul] . map encodeW8 . splitc (c2w8 nul)
   where
-	nul = ['\NUL']
+	nul = '\NUL'
 
 decodeW8NUL :: FilePath -> [Word8]
-decodeW8NUL = intercalate (s2w8 nul) . map decodeW8 . split nul
+decodeW8NUL = intercalate [c2w8 nul] . map decodeW8 . splitc nul
   where
-	nul = ['\NUL']
+	nul = '\NUL'
+
+c2w8 :: Char -> Word8
+c2w8 = fromIntegral . fromEnum
+
+w82c :: Word8 -> Char
+w82c = toEnum . fromIntegral
+
+s2w8 :: String -> [Word8]
+s2w8 = map c2w8
+
+w82s :: [Word8] -> String
+w82s = map w82c
 
 {- Truncates a FilePath to the given number of bytes (or less),
  - as represented on disk.