git-annex fromkey now takes multiple pairs of keys and filenames

It also still reads from stdin when none are specified.

Command/FromKey.hs

@@ -20,16 +20,18 @@ import Network.URI
 cmd :: Command
 cmd = notDirect $ notBareRepo $
 	command "fromkey" SectionPlumbing "adds a file using a specific key"
-		(paramPair paramKey paramPath)
+		(paramRepeating (paramPair paramKey paramPath))
 		(withParams seek)
 
 seek :: CmdParams -> CommandSeek
+seek [] = do
+	withNothing startMass []
 seek ps = do
 	force <- Annex.getState Annex.force
-	withWords (start force) ps
+	withPairs (start force) ps
 
-start :: Bool -> [String] -> CommandStart
-start force (keyname:file:[]) = do
+start :: Bool -> (String, FilePath) -> CommandStart
+start force (keyname, file) = do
 	let key = mkKey keyname
 	unless force $ do
 		inbackend <- inAnnex key
@@ -37,10 +39,11 @@ start force (keyname:file:[]) = do
 			"key ("++ keyname ++") is not present in backend (use --force to override this sanity check)"
 	showStart "fromkey" file
 	next $ perform key file
-start _ [] = do
+
+startMass :: CommandStart
+startMass = do
 	showStart "fromkey" "stdin"
 	next massAdd
-start _ _ = giveup "specify a key and a dest file"
 
 massAdd :: CommandPerform
 massAdd = go True =<< map (separate (== ' ')) . lines <$> liftIO getContents

doc/git-annex-fromkey.mdwn

@@ -4,14 +4,16 @@ git-annex fromkey - adds a file using a specific key
 
 # SYNOPSIS
 
-git annex fromkey `[key file]`
+git annex fromkey `[key file ...]`
 
 # DESCRIPTION
 
 This plumbing-level command can be used to manually set up a file
 in the git repository to link to a specified key.
 
-If the key and file are not specified on the command line, they are
+Multiple pairs of file and key can be given in a single command line.
+
+If no key and file pair are specified on the command line, they are
 instead read from stdin. Any number of lines can be provided in this
 mode, each containing a key and filename, separated by a single space.