version: Add --raw

Command/Version.hs

@@ -18,16 +18,28 @@ import qualified Remote
 import qualified Backend
 
 cmd :: [Command]
-cmd = [noCommit $ noRepo startNoRepo $ dontCheck repoExists $
+cmd = [withOptions [rawOption] $
+	noCommit $ noRepo startNoRepo $ dontCheck repoExists $
 	command "version" paramNothing seek SectionQuery "show version info"]
 
+rawOption :: Option
+rawOption = flagOption [] "raw" "output only program version"
+
 seek :: CommandSeek
-seek = withNothing start
+seek = withNothing $ ifM (getOptionFlag rawOption) (startRaw, start)
+
+startRaw :: CommandStart
+startRaw = do
+	liftIO $ do
+		putStr SysConfig.packageversion
+		hFlush stdout
+	stop
 
 start :: CommandStart
 start = do
 	v <- getVersion
 	liftIO $ do
+
 		showPackageVersion
 		info "local repository version" $ fromMaybe "unknown" v
 		info "supported repository version" supportedVersion

debian/changelog

@@ -25,6 +25,7 @@ git-annex (5.20150328) UNRELEASED; urgency=medium
   * Fix truncation of parameters that could occur when using xargs git-annex.
   * Significantly sped up processing of large numbers of directories
     passed to a single git-annex command.
+  * version: Add --raw
 
  -- Joey Hess <id@joeyh.name>  Fri, 27 Mar 2015 16:04:43 -0400
 

doc/git-annex-version.mdwn

@@ -19,6 +19,12 @@ corresponds to the git ref from git-annex's source repository that was
 built. Therefore, "5.20150320-gdd35cf3" is a daily build, and
 "5.20150401" is an April 1st release made a bit later.
 
+# OPTIONS
+
+* `--raw`
+
+  Causes only git-annex's version to be output, and nothing else.
+
 # SEE ALSO
 
 [[git-annex]](1)