use Text.Regex.PCRE.Light.Char8 rather than Text.Regexp

Text.Regexp does not think that á matches . -- seems to be a unicode
problem.

Command.hs

@@ -12,7 +12,7 @@ import System.Directory
 import System.Posix.Files
 import Control.Monad (filterM)
 import System.Path.WildMatch
-import Text.Regex
+import Text.Regex.PCRE.Light.Char8
 
 import Types
 import qualified Backend
@@ -189,12 +189,12 @@ filterFiles l = do
 	if null exclude
 		then return l'
 		else do
-			let regexp = mkRegex $ "^" ++ wildToRegex exclude
+			let regexp = compile ("^" ++ wildToRegex exclude) []
 			return $ filter (notExcluded regexp) l'
 	where
 		notState f = stateLoc /= take stateLocLen f
 		stateLocLen = length stateLoc
-		notExcluded r f = case matchRegex r f of
+		notExcluded r f = case match r f [] of
 			Nothing -> True
 			Just _ -> False
 

debian/control

@@ -1,7 +1,7 @@
 Source: git-annex
 Section: utils
 Priority: optional
-Build-Depends: debhelper (>= 7.0.50), ghc6, libghc6-missingh-dev, libghc6-testpack-dev, ikiwiki, uuid, rsync
+Build-Depends: debhelper (>= 7.0.50), ghc6, libghc6-missingh-dev, libghc6-pcre-light-dev, libghc6-testpack-dev, ikiwiki, uuid, rsync
 Maintainer: Joey Hess <joeyh@debian.org>
 Standards-Version: 3.9.1
 Vcs-Git: git://git.kitenet.net/git-annex

doc/install.mdwn

@@ -3,6 +3,7 @@ To build and use git-annex, you will need:
 * `git`: <http://git-scm.com/>
 * The Haskell Platform: <http://haskell.org/platform/>
 * MissingH: <http://github.com/jgoerzen/missingh/wiki>
+* pcre-light: <http://hackage.haskell.org/package/pcre-light>
 * `uuid`: <http://www.ossp.org/pkg/lib/uuid/>
 * `xargs`: <http://savannah.gnu.org/projects/findutils/>
 * `rsync`: <http://rsync.samba.org/> (optional but recommended)