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-rw-r--r--Command/Uninit.hs4
-rw-r--r--Command/Unused.hs7
-rw-r--r--Git/Branch.hs15
-rw-r--r--Git/CheckAttr.hs32
-rw-r--r--Git/Command.hs32
-rw-r--r--Git/HashObject.hs1
-rw-r--r--Git/LsTree.hs21
-rw-r--r--Git/Queue.hs6
-rw-r--r--Git/Ref.hs6
-rw-r--r--Git/UnionMerge.hs17
-rw-r--r--Messages.hs15
-rw-r--r--Utility/Misc.hs8
-rw-r--r--Utility/StatFS.hsc9
-rw-r--r--Utility/Touch.hsc9
-rw-r--r--debian/changelog2
-rw-r--r--debian/control2
-rw-r--r--doc/download.mdwn17
-rw-r--r--doc/install.mdwn2
-rw-r--r--doc/tips/assume-unstaged.mdwn31
19 files changed, 137 insertions, 99 deletions
diff --git a/Command/Uninit.hs b/Command/Uninit.hs
index ec6d0abf3..d6283a77d 100644
--- a/Command/Uninit.hs
+++ b/Command/Uninit.hs
@@ -7,8 +7,6 @@
module Command.Uninit where
-import qualified Data.ByteString.Lazy.Char8 as B
-
import Common.Annex
import Command
import qualified Git
@@ -29,7 +27,7 @@ check = do
when (b == Annex.Branch.name) $ error $
"cannot uninit when the " ++ show b ++ " branch is checked out"
where
- current_branch = Git.Ref . Prelude.head . lines . B.unpack <$> revhead
+ current_branch = Git.Ref . Prelude.head . lines <$> revhead
revhead = inRepo $ Git.Command.pipeRead
[Params "rev-parse --abbrev-ref HEAD"]
diff --git a/Command/Unused.hs b/Command/Unused.hs
index ffd4bef45..1c82b9ae4 100644
--- a/Command/Unused.hs
+++ b/Command/Unused.hs
@@ -10,7 +10,8 @@
module Command.Unused where
import qualified Data.Set as S
-import qualified Data.ByteString.Lazy.Char8 as L
+import qualified Data.Text.Lazy as L
+import qualified Data.Text.Lazy.Encoding as L
import Common.Annex
import Command
@@ -161,7 +162,7 @@ excludeReferenced l = do
refs = map (Git.Ref . snd) .
nubBy uniqref .
filter ourbranches .
- map (separate (== ' ')) . lines . L.unpack
+ map (separate (== ' ')) . lines
uniqref (a, _) (b, _) = a == b
ourbranchend = '/' : show Annex.Branch.name
ourbranches (_, b) = not $ ourbranchend `isSuffixOf` b
@@ -202,7 +203,7 @@ getKeysReferencedInGit ref = do
findkeys c [] = return c
findkeys c (l:ls)
| isSymLink (LsTree.mode l) = do
- content <- catFile ref $ LsTree.file l
+ content <- L.decodeUtf8 <$> catFile ref (LsTree.file l)
case fileKey (takeFileName $ L.unpack content) of
Nothing -> findkeys c ls
Just k -> findkeys (k:c) ls
diff --git a/Git/Branch.hs b/Git/Branch.hs
index 98811a987..cd9188228 100644
--- a/Git/Branch.hs
+++ b/Git/Branch.hs
@@ -7,8 +7,6 @@
module Git.Branch where
-import qualified Data.ByteString.Lazy.Char8 as L
-
import Common
import Git
import Git.Sha
@@ -19,15 +17,15 @@ current :: Repo -> IO (Maybe Git.Ref)
current r = parse <$> pipeRead [Param "symbolic-ref", Param "HEAD"] r
where
parse v
- | L.null v = Nothing
- | otherwise = Just $ Git.Ref $ firstLine $ L.unpack v
+ | null v = Nothing
+ | otherwise = Just $ Git.Ref $ firstLine v
{- Checks if the second branch has any commits not present on the first
- branch. -}
changed :: Branch -> Branch -> Repo -> IO Bool
changed origbranch newbranch repo
| origbranch == newbranch = return False
- | otherwise = not . L.null <$> diffs
+ | otherwise = not . null <$> diffs
where
diffs = pipeRead
[ Param "log"
@@ -73,15 +71,14 @@ fastForward branch (first:rest) repo = do
- with the specified parent refs, and returns the committed sha -}
commit :: String -> Branch -> [Ref] -> Repo -> IO Sha
commit message branch parentrefs repo = do
- tree <- getSha "write-tree" $ asString $
+ tree <- getSha "write-tree" $
pipeRead [Param "write-tree"] repo
- sha <- getSha "commit-tree" $ asString $
+ sha <- getSha "commit-tree" $
ignorehandle $ pipeWriteRead
(map Param $ ["commit-tree", show tree] ++ ps)
- (L.pack message) repo
+ message repo
run "update-ref" [Param $ show branch, Param $ show sha] repo
return sha
where
ignorehandle a = snd <$> a
- asString a = L.unpack <$> a
ps = concatMap (\r -> ["-p", show r]) parentrefs
diff --git a/Git/CheckAttr.hs b/Git/CheckAttr.hs
index eedaf6642..3e9375159 100644
--- a/Git/CheckAttr.hs
+++ b/Git/CheckAttr.hs
@@ -7,12 +7,9 @@
module Git.CheckAttr where
-import System.Exit
-
import Common
import Git
import Git.Command
-import qualified Git.Filename
import qualified Git.Version
{- Efficiently looks up a gitattributes value for each file in a list. -}
@@ -20,13 +17,9 @@ lookup :: String -> [FilePath] -> Repo -> IO [(FilePath, String)]
lookup attr files repo = do
cwd <- getCurrentDirectory
(_, fromh, toh) <- hPipeBoth "git" (toCommand params)
- _ <- forkProcess $ do
- hClose fromh
- hPutStr toh $ join "\0" $ input cwd
- hClose toh
- exitSuccess
- hClose toh
- output cwd . lines <$> hGetContents fromh
+ hPutStr toh $ join "\0" $ input cwd
+ hClose toh
+ zip files . map attrvalue . lines <$> hGetContents fromh
where
params = gitCommandLine
[ Param "check-attr"
@@ -45,22 +38,7 @@ lookup attr files repo = do
input cwd
| oldgit = map (absPathFrom cwd) files
| otherwise = map (relPathDirToFile cwd . absPathFrom cwd) files
- output cwd
- | oldgit = map (torel cwd . topair)
- | otherwise = map topair
-
- topair l = (Git.Filename.decode file, value)
- where
- file = join sep $ beginning bits
- value = end bits !! 0
+ attrvalue l = end bits !! 0
+ where
bits = split sep l
sep = ": " ++ attr ++ ": "
-
- torel cwd (file, value) = (relfile, value)
- where
- relfile
- | startswith cwd' file = drop (length cwd') file
- | otherwise = relPathDirToFile top' file
- top = workTree repo
- cwd' = cwd ++ "/"
- top' = top ++ "/"
diff --git a/Git/Command.hs b/Git/Command.hs
index ec701c1f0..3d859ed28 100644
--- a/Git/Command.hs
+++ b/Git/Command.hs
@@ -7,7 +7,8 @@
module Git.Command where
-import qualified Data.ByteString.Lazy.Char8 as L
+import qualified Data.Text.Lazy as L
+import qualified Data.Text.Lazy.IO as L
import Common
import Git
@@ -38,41 +39,40 @@ run subcommand params repo = assertLocal repo $
- Note that this leaves the git process running, and so zombies will
- result unless reap is called.
-}
-pipeRead :: [CommandParam] -> Repo -> IO L.ByteString
+pipeRead :: [CommandParam] -> Repo -> IO String
pipeRead params repo = assertLocal repo $ do
(_, h) <- hPipeFrom "git" $ toCommand $ gitCommandLine params repo
- hSetBinaryMode h True
- L.hGetContents h
+ fileEncoding h
+ hGetContents h
{- Runs a git subcommand, feeding it input.
- You should call either getProcessStatus or forceSuccess on the PipeHandle. -}
-pipeWrite :: [CommandParam] -> L.ByteString -> Repo -> IO PipeHandle
+pipeWrite :: [CommandParam] -> L.Text -> Repo -> IO PipeHandle
pipeWrite params s repo = assertLocal repo $ do
(p, h) <- hPipeTo "git" (toCommand $ gitCommandLine params repo)
- L.hPut h s
+ L.hPutStr h s
hClose h
return p
{- Runs a git subcommand, feeding it input, and returning its output.
- You should call either getProcessStatus or forceSuccess on the PipeHandle. -}
-pipeWriteRead :: [CommandParam] -> L.ByteString -> Repo -> IO (PipeHandle, L.ByteString)
+pipeWriteRead :: [CommandParam] -> String -> Repo -> IO (PipeHandle, String)
pipeWriteRead params s repo = assertLocal repo $ do
(p, from, to) <- hPipeBoth "git" (toCommand $ gitCommandLine params repo)
- hSetBinaryMode from True
- L.hPut to s
+ fileEncoding to
+ fileEncoding from
+ hPutStr to s
hClose to
- c <- L.hGetContents from
+ c <- hGetContents from
return (p, c)
{- Reads null terminated output of a git command (as enabled by the -z
- parameter), and splits it. -}
pipeNullSplit :: [CommandParam] -> Repo -> IO [String]
-pipeNullSplit params repo = map L.unpack <$> pipeNullSplitB params repo
-
-{- For when Strings are not needed. -}
-pipeNullSplitB ::[CommandParam] -> Repo -> IO [L.ByteString]
-pipeNullSplitB params repo = filter (not . L.null) . L.split '\0' <$>
- pipeRead params repo
+pipeNullSplit params repo =
+ filter (not . null) . split sep <$> pipeRead params repo
+ where
+ sep = "\0"
{- Reaps any zombie git processes. -}
reap :: IO ()
diff --git a/Git/HashObject.hs b/Git/HashObject.hs
index f5e6d50cd..ae498278f 100644
--- a/Git/HashObject.hs
+++ b/Git/HashObject.hs
@@ -16,6 +16,7 @@ import Git.Command
hashFiles :: [FilePath] -> Repo -> IO ([Sha], IO ())
hashFiles paths repo = do
(pid, fromh, toh) <- hPipeBoth "git" $ toCommand $ git_hash_object repo
+ fileEncoding toh
_ <- forkProcess (feeder toh)
hClose toh
shas <- map Ref . lines <$> hGetContentsStrict fromh
diff --git a/Git/LsTree.hs b/Git/LsTree.hs
index aae7f1263..8f9066f0f 100644
--- a/Git/LsTree.hs
+++ b/Git/LsTree.hs
@@ -14,7 +14,6 @@ module Git.LsTree (
import Numeric
import Control.Applicative
import System.Posix.Types
-import qualified Data.ByteString.Lazy.Char8 as L
import Common
import Git
@@ -31,22 +30,22 @@ data TreeItem = TreeItem
{- Lists the contents of a Ref -}
lsTree :: Ref -> Repo -> IO [TreeItem]
lsTree t repo = map parseLsTree <$>
- pipeNullSplitB [Params "ls-tree --full-tree -z -r --", File $ show t] repo
+ pipeNullSplit [Params "ls-tree --full-tree -z -r --", File $ show t] repo
{- Parses a line of ls-tree output.
- (The --long format is not currently supported.) -}
-parseLsTree :: L.ByteString -> TreeItem
+parseLsTree :: String -> TreeItem
parseLsTree l = TreeItem
- { mode = fst $ Prelude.head $ readOct $ L.unpack m
- , typeobj = L.unpack t
- , sha = L.unpack s
- , file = Git.Filename.decode $ L.unpack f
+ { mode = fst $ Prelude.head $ readOct m
+ , typeobj = t
+ , sha = s
+ , file = Git.Filename.decode f
}
where
-- l = <mode> SP <type> SP <sha> TAB <file>
-- All fields are fixed, so we can pull them out of
-- specific positions in the line.
- (m, past_m) = L.splitAt 7 l
- (t, past_t) = L.splitAt 4 past_m
- (s, past_s) = L.splitAt 40 $ L.tail past_t
- f = L.tail past_s
+ (m, past_m) = splitAt 7 l
+ (t, past_t) = splitAt 4 past_m
+ (s, past_s) = splitAt 40 $ Prelude.tail past_t
+ f = Prelude.tail past_s
diff --git a/Git/Queue.hs b/Git/Queue.hs
index 25c5b073c..c71605ad5 100644
--- a/Git/Queue.hs
+++ b/Git/Queue.hs
@@ -18,8 +18,8 @@ import qualified Data.Map as M
import System.IO
import System.Cmd.Utils
import Data.String.Utils
-import Utility.SafeCommand
+import Utility.SafeCommand
import Common
import Git
import Git.Command
@@ -90,4 +90,6 @@ runAction repo action files =
where
params = toCommand $ gitCommandLine
(Param (getSubcommand action):getParams action) repo
- feedxargs h = hPutStr h $ join "\0" files
+ feedxargs h = do
+ fileEncoding h
+ hPutStr h $ join "\0" files
diff --git a/Git/Ref.hs b/Git/Ref.hs
index 557d24a37..f483aede0 100644
--- a/Git/Ref.hs
+++ b/Git/Ref.hs
@@ -7,8 +7,6 @@
module Git.Ref where
-import qualified Data.ByteString.Lazy.Char8 as L
-
import Common
import Git
import Git.Command
@@ -40,7 +38,7 @@ exists ref = runBool "show-ref"
{- Get the sha of a fully qualified git ref, if it exists. -}
sha :: Branch -> Repo -> IO (Maybe Sha)
-sha branch repo = process . L.unpack <$> showref repo
+sha branch repo = process <$> showref repo
where
showref = pipeRead [Param "show-ref",
Param "--hash", -- get the hash
@@ -52,7 +50,7 @@ sha branch repo = process . L.unpack <$> showref repo
matching :: Ref -> Repo -> IO [(Ref, Branch)]
matching ref repo = do
r <- pipeRead [Param "show-ref", Param $ show ref] repo
- return $ map (gen . L.unpack) (L.lines r)
+ return $ map gen (lines r)
where
gen l = let (r, b) = separate (== ' ') l in
(Ref r, Ref b)
diff --git a/Git/UnionMerge.hs b/Git/UnionMerge.hs
index 4b335e47b..be8eb10d9 100644
--- a/Git/UnionMerge.hs
+++ b/Git/UnionMerge.hs
@@ -15,7 +15,8 @@ module Git.UnionMerge (
) where
import System.Cmd.Utils
-import qualified Data.ByteString.Lazy.Char8 as L
+import qualified Data.Text.Lazy as L
+import qualified Data.Text.Lazy.Encoding as L
import qualified Data.Set as S
import Common
@@ -56,6 +57,7 @@ update_index repo ls = stream_update_index repo [(`mapM_` ls)]
stream_update_index :: Repo -> [Streamer] -> IO ()
stream_update_index repo as = do
(p, h) <- hPipeTo "git" (toCommand $ gitCommandLine params repo)
+ fileEncoding h
forM_ as (stream h)
hClose h
forceSuccess p
@@ -106,21 +108,22 @@ mergeFile :: String -> FilePath -> CatFileHandle -> Repo -> IO (Maybe String)
mergeFile info file h repo = case filter (/= nullSha) [Ref asha, Ref bsha] of
[] -> return Nothing
(sha:[]) -> use sha
- shas -> use =<< either return (hashObject repo . L.unlines) =<<
+ shas -> use =<< either return (hashObject repo . unlines) =<<
calcMerge . zip shas <$> mapM getcontents shas
where
[_colonmode, _bmode, asha, bsha, _status] = words info
- getcontents s = L.lines <$> catObject h s
+ getcontents s = map L.unpack . L.lines .
+ L.decodeUtf8 <$> catObject h s
use sha = return $ Just $ update_index_line sha file
{- Injects some content into git, returning its Sha. -}
-hashObject :: Repo -> L.ByteString -> IO Sha
+hashObject :: Repo -> String -> IO Sha
hashObject repo content = getSha subcmd $ do
(h, s) <- pipeWriteRead (map Param params) content repo
- L.length s `seq` do
+ length s `seq` do
forceSuccess h
reap -- XXX unsure why this is needed
- return $ L.unpack s
+ return s
where
subcmd = "hash-object"
params = [subcmd, "-w", "--stdin"]
@@ -130,7 +133,7 @@ hashObject repo content = getSha subcmd $ do
- When possible, reuses the content of an existing ref, rather than
- generating new content.
-}
-calcMerge :: [(Ref, [L.ByteString])] -> Either Ref [L.ByteString]
+calcMerge :: [(Ref, [String])] -> Either Ref [String]
calcMerge shacontents
| null reuseable = Right $ new
| otherwise = Left $ fst $ Prelude.head reuseable
diff --git a/Messages.hs b/Messages.hs
index 1294e44f6..982b9313c 100644
--- a/Messages.hs
+++ b/Messages.hs
@@ -119,18 +119,13 @@ showHeader h = handle q $
showRaw :: String -> Annex ()
showRaw s = handle q $ putStrLn s
-{- By default, haskell honors the user's locale in its output to stdout
- - and stderr. While that's great for proper unicode support, for git-annex
- - all that's really needed is the ability to display simple messages
- - (currently untranslated), and importantly, to display filenames exactly
- - as they are written on disk, no matter what their encoding. So, force
- - raw mode.
- -
- - NB: Once git-annex gets localized, this will need a rethink. -}
+{- This avoids ghc's output layer crashing on invalid encoded characters in
+ - filenames when printing them out.
+ -}
setupConsole :: IO ()
setupConsole = do
- hSetBinaryMode stdout True
- hSetBinaryMode stderr True
+ fileEncoding stdout
+ fileEncoding stderr
handle :: IO () -> IO () -> Annex ()
handle json normal = Annex.getState Annex.output >>= go
diff --git a/Utility/Misc.hs b/Utility/Misc.hs
index 3ac5ca5c0..9c284c826 100644
--- a/Utility/Misc.hs
+++ b/Utility/Misc.hs
@@ -9,6 +9,14 @@ module Utility.Misc where
import System.IO
import Control.Monad
+import GHC.IO.Encoding
+
+{- Sets a Handle to use the filesystem encoding. This causes data
+ - written or read from it to be encoded/decoded the same
+ - as ghc 7.4 does to filenames et. This special encoding
+ - allows "arbitrary undecodable bytes to be round-tripped through it". -}
+fileEncoding :: Handle -> IO ()
+fileEncoding h = hSetEncoding h =<< getFileSystemEncoding
{- A version of hgetContents that is not lazy. Ensures file is
- all read before it gets closed. -}
diff --git a/Utility/StatFS.hsc b/Utility/StatFS.hsc
index 937571dfa..51a6bda1e 100644
--- a/Utility/StatFS.hsc
+++ b/Utility/StatFS.hsc
@@ -50,8 +50,11 @@ module Utility.StatFS ( FileSystemStats(..), getFileSystemStats ) where
import Foreign
import Foreign.C.Types
import Foreign.C.String
-import Data.ByteString (useAsCString)
-import Data.ByteString.Char8 (pack)
+import GHC.IO.Encoding (getFileSystemEncoding)
+import GHC.Foreign as GHC
+
+withFilePath :: FilePath -> (CString -> IO a) -> IO a
+withFilePath fp f = getFileSystemEncoding >>= \enc -> GHC.withCString enc fp f
#if defined (__FreeBSD__) || defined (__FreeBSD_kernel__) || defined (__APPLE__)
# include <sys/param.h>
@@ -105,7 +108,7 @@ getFileSystemStats path =
return Nothing
#else
allocaBytes (#size struct statfs) $ \vfs ->
- useAsCString (pack path) $ \cpath -> do
+ withFilePath path $ \cpath -> do
res <- c_statfs cpath vfs
if res == -1 then return Nothing
else do
diff --git a/Utility/Touch.hsc b/Utility/Touch.hsc
index fd3320cd1..24ccd17a6 100644
--- a/Utility/Touch.hsc
+++ b/Utility/Touch.hsc
@@ -16,6 +16,11 @@ module Utility.Touch (
import Foreign
import Foreign.C
import Control.Monad (when)
+import GHC.IO.Encoding (getFileSystemEncoding)
+import GHC.Foreign as GHC
+
+withFilePath :: FilePath -> (CString -> IO a) -> IO a
+withFilePath fp f = getFileSystemEncoding >>= \enc -> GHC.withCString enc fp f
newtype TimeSpec = TimeSpec CTime
@@ -64,7 +69,7 @@ foreign import ccall "utimensat"
touchBoth file atime mtime follow =
allocaArray 2 $ \ptr ->
- withCString file $ \f -> do
+ withFilePath file $ \f -> do
pokeArray ptr [atime, mtime]
r <- c_utimensat at_fdcwd f ptr flags
when (r /= 0) $ throwErrno "touchBoth"
@@ -101,7 +106,7 @@ foreign import ccall "lutimes"
touchBoth file atime mtime follow =
allocaArray 2 $ \ptr ->
- withCString file $ \f -> do
+ withFilePath file $ \f -> do
pokeArray ptr [atime, mtime]
r <- syscall f ptr
if (r /= 0)
diff --git a/debian/changelog b/debian/changelog
index 96234d927..30b7090be 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -7,6 +7,8 @@ git-annex (3.20120124) UNRELEASED; urgency=low
git-annex's existing ability to recover in this situation. This is
used by git-annex-shell and other places where changes are made to
a remote's location log.
+ * Modifications to support ghc 7.4's handling of filenames.
+ This version can only be built with ghc 7.4.
-- Joey Hess <joeyh@debian.org> Tue, 24 Jan 2012 16:21:55 -0400
diff --git a/debian/control b/debian/control
index c3ddad932..5d5956de8 100644
--- a/debian/control
+++ b/debian/control
@@ -3,7 +3,7 @@ Section: utils
Priority: optional
Build-Depends:
debhelper (>= 9),
- ghc,
+ ghc (>= 7.4),
libghc-missingh-dev,
libghc-hslogger-dev,
libghc-pcre-light-dev,
diff --git a/doc/download.mdwn b/doc/download.mdwn
index e1257d261..bfde849f8 100644
--- a/doc/download.mdwn
+++ b/doc/download.mdwn
@@ -15,3 +15,20 @@ From time to time, releases of git-annex are uploaded
Some operating systems include git-annex in easily prepackaged form and
others need some manual work. See [[install]] for details.
+
+## git branches
+
+The git repository has some branches:
+
+* `debian-stable` contains the latest backport of git-annex to Debian
+ stable.
+* `no-s3` disables the S3 special remote, for systems that lack the
+ necessary haskell library.
+* `old-monad-control` is for systems that don't have a newer monad-control
+ library.
+* `tweak-fetch` adds support for the git tweak-fetch hook, which has
+ been proposed and implemented but not yet accepted into git.
+* `ghc7.4` is for use this that version of ghc.
+* `setup` contains configuration for this website
+* `pristine-tar` contains [pristine-tar](http://kitenet.net/~joey/code/pristine-tar)
+ data to create tarballs of any past git-annex release.
diff --git a/doc/install.mdwn b/doc/install.mdwn
index b48914197..8de24d40d 100644
--- a/doc/install.mdwn
+++ b/doc/install.mdwn
@@ -21,7 +21,7 @@ As a haskell package, git-annex can be installed using cabal. For example:
To build and use git-annex, you will need:
* Haskell stuff
- * [The Haskell Platform](http://haskell.org/platform/)
+ * [The Haskell Platform](http://haskell.org/platform/) (GHC 7.4 or newer)
* [MissingH](http://github.com/jgoerzen/missingh/wiki)
* [pcre-light](http://hackage.haskell.org/package/pcre-light)
* [utf8-string](http://hackage.haskell.org/package/utf8-string)
diff --git a/doc/tips/assume-unstaged.mdwn b/doc/tips/assume-unstaged.mdwn
new file mode 100644
index 000000000..ef74d9bd4
--- /dev/null
+++ b/doc/tips/assume-unstaged.mdwn
@@ -0,0 +1,31 @@
+[[!meta title="using assume-unstages to speed up git with large trees of annexed files"]]
+
+Git update-index's assume-unstaged feature can be used to speed
+up `git status` and stuff by not statting the whole tree looking for changed
+files.
+
+This feature works quite well with git-annex. Especially because git
+annex's files are immutable, so arn't going to change out from under it,
+this is a nice fit. If you have a very large tree and `git status` is
+annoyingly slow, you can turn it on:
+
+ git config core.ignoreStat true
+
+When git mv and git rm are used, those changes *do* get noticed, even
+on assume-unchanged files. When new files are added, eg by `git annex add`,
+they are also noticed.
+
+There are two gotchas. Both occur because `git add` does not stage
+assume-unchanged files.
+
+1. When an annexed file is moved to a different directory, it updates
+ the symlink, and runs `git add` on it. So the file will move,
+ but the changed symlink will not be noticed by git and it will commit a
+ dangling symlink.
+2. When using `git annex migrate`, it changes the symlink and `git adds`
+ it. Again this won't be committed.
+
+These can be worked around by running `git update-index --really-refresh`
+after performing such operations. I hope that `git add` will be changed
+to stage changes to assume-unchanged files, which would remove this
+only complication. --[[Joey]]