Fix display of warning message when encountering a file that uses an unsupported backend.

Backend.hs

@@ -75,16 +75,16 @@ genKey' (b:bs) file = do
  - by examining what the file symlinks to. -}
 lookupFile :: FilePath -> Annex (Maybe (Key, Backend))
 lookupFile file = do
-	tl <- liftIO $ tryIO getsymlink
+	tl <- liftIO $ tryIO $ readSymbolicLink file
 	case tl of
 		Left _ -> return Nothing
 		Right l -> makekey l
 	where
-		getsymlink = takeFileName <$> readSymbolicLink file
+		makekey l = maybe (return Nothing) (makeret l) (fileKey $ takeFileName l)
-		makekey l = maybe (return Nothing) (makeret l) (fileKey l)
 		makeret l k = let bname = keyBackendName k in
 			case maybeLookupBackendName bname of
-				Just backend -> return $ Just (k, backend)
+				Just backend -> do
+					return $ Just (k, backend)
 				Nothing -> do
 					when (isLinkToAnnex l) $ warning $
 						"skipping " ++ file ++

Locations.hs

@@ -155,7 +155,9 @@ gitAnnexRemotesDir r = addTrailingPathSeparator $ gitAnnexDir r </> "remotes"
 
 {- Checks a symlink target to see if it appears to point to annexed content. -}
 isLinkToAnnex :: FilePath -> Bool
-isLinkToAnnex s = ("/.git/" ++ objectDir) `isInfixOf` s
+isLinkToAnnex s = ("/" ++ d) `isInfixOf` s || d `isPrefixOf` s
+	where
+		d = ".git" </> objectDir
 
 {- Converts a key into a filename fragment without any directory.
  -

debian/changelog

@@ -4,6 +4,8 @@ git-annex (3.20120523) UNRELEASED; urgency=low
   * lock: Reset unlocked file to index, rather than to branch head.
   * import: New subcommand, pulls files from a directory outside the annex
     and adds them.
+  * Fix display of warning message when encountering a file that uses an
+    unsupported backend.
 
  -- Joey Hess <joeyh@debian.org>  Sun, 27 May 2012 20:55:29 -0400