diff --git a/CHANGES b/CHANGES
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,32 @@
+Version 0.10.5 released 23 August 2014
+
+  * Added github login option (Freiric Barral).
+
+  * Change default math display to mathjax.
+
+  * Relaxed package bounds, fixed compiler warnings.
+    Added Network.Gitit.Compat.Except module for compatibility
+    with earlier and later mtl versions.
+
+  * Added network-uri flag to accommodate network-uri/network split.
+
+  * Fixed failure when loading the Subst plugin (Glenn Searby).
+
+  * Added Makefile, for use in installing on server.
+
+  * Include takeBaseName in System.FilePath import (Caleb McDaniel).
+
+  * Update README.markdown on Apache installation (Peter Gallagher).
+
+  * Add full versions of minified JavaScript (#400) (Peter Gallagher).
+
+  * Enable highlighting of patterns that start or end with punctuation
+    (Caleb McDaniel).
+
+  * Moved oauth secret to separate config file (Freiric Barral).
+
+  * Corrected MathJax CDN URL (Maciek Makowski).
+
 Version 0.10.4 released 30 Jun 2014
 
 *   Updated package bounds for happstack (#382), pandoc, blaze-html,
diff --git a/Network/Gitit.hs b/Network/Gitit.hs
--- a/Network/Gitit.hs
+++ b/Network/Gitit.hs
@@ -158,7 +158,7 @@
   resp' <- serveDirectory EnableBrowsing [] p
   if rsCode resp' == 404 || lastNote "fileServeStrict'" (rqUri rq) == '/'
      then mzero  -- pass through if not found or directory index
-     else do
+     else
        -- turn off compresion filter unless it's text
        case getHeader "Content-Type" resp' of
             Just ct | B.pack "text/" `B.isPrefixOf` ct -> return resp'
diff --git a/Network/Gitit/Authentication.hs b/Network/Gitit/Authentication.hs
--- a/Network/Gitit/Authentication.hs
+++ b/Network/Gitit/Authentication.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE ScopedTypeVariables, StandaloneDeriving #-}
+{-# LANGUAGE ScopedTypeVariables #-}
 {-
 Copyright (C) 2009 John MacFarlane <jgm@berkeley.edu>,
                    Henry Laxen <nadine.and.henry@pobox.com>
@@ -24,7 +24,8 @@
 module Network.Gitit.Authentication ( loginUserForm
                                     , formAuthHandlers
                                     , httpAuthHandlers
-                                    , rpxAuthHandlers) where
+                                    , rpxAuthHandlers
+                                    , githubAuthHandlers) where
 
 import Network.Gitit.State
 import Network.Gitit.Types
@@ -32,25 +33,27 @@
 import Network.Gitit.Layout
 import Network.Gitit.Server
 import Network.Gitit.Util
+import Network.Gitit.Authentication.Github
 import Network.Captcha.ReCaptcha (captchaFields, validateCaptcha)
 import Text.XHtml hiding ( (</>), dir, method, password, rev )
 import qualified Text.XHtml as X ( password )
 import System.Process (readProcessWithExitCode)
 import Control.Monad (unless, liftM, mplus)
-import Control.Monad.Trans (MonadIO(), liftIO)
+import Control.Monad.Trans (liftIO)
 import System.Exit
 import System.Log.Logger (logM, Priority(..))
-import Data.Char (isAlphaNum, isAlpha, isAscii)
+import Data.Char (isAlphaNum, isAlpha)
 import qualified Data.Map as M
 import Text.Pandoc.Shared (substitute)
 import Data.Maybe (isJust, fromJust, isNothing, fromMaybe)
-import Network.URL (encString, exportURL, add_param, importURL)
+import Network.URL (exportURL, add_param, importURL)
 import Network.BSD (getHostName)
 import qualified Text.StringTemplate as T
 import Network.HTTP (urlEncodeVars, urlDecode, urlEncode)
 import Codec.Binary.UTF8.String (encodeString)
 import Data.ByteString.UTF8 (toString)
 import Network.Gitit.Rpxnow as R
+import Network.OAuth.OAuth2
 
 data ValidationType = Register
                     | ResetPassword
@@ -298,11 +301,8 @@
                then return $ Left "missing-challenge-or-response"
                else liftIO $ do
                       mbIPaddr <- lookupIPAddr peer
-                      let ipaddr = case mbIPaddr of
-                                        Just ip -> ip
-                                        Nothing -> error $
-                                          "Could not find ip address for " ++
-                                          peer
+                      let ipaddr = fromMaybe (error $ "Could not find ip address for " ++ peer)
+                                   mbIPaddr
                       ipaddr `seq` validateCaptcha (recaptchaPrivateKey cfg)
                               ipaddr (recaptchaChallengeField recaptcha)
                               (recaptchaResponseField recaptcha)
@@ -385,9 +385,6 @@
     else
       withMessages ["Invalid username or password."] loginUserForm
 
-encUrl :: String -> String
-encUrl = encString True isAscii
-
 logoutUser :: Params -> Handler
 logoutUser params = do
   let key = pSessionKey params
@@ -434,10 +431,37 @@
 
 httpAuthHandlers :: [Handler]
 httpAuthHandlers =
-  [ dir "_logout" $ logoutUserHTTP
+  [ dir "_logout" logoutUserHTTP
   , dir "_login"  $ withData loginUserHTTP
   , dir "_user" currentUser ]
 
+oauthGithubCallback :: OAuth2
+                   -> GithubCallbackPars                  -- ^ Authentication code gained after authorization
+                   -> Handler
+oauthGithubCallback githubKey githubCallbackPars = do
+    mUser <- liftIO $ getGithubUser githubKey githubCallbackPars
+    case mUser of
+      Right user -> do
+               let userEmail = uEmail user
+               updateGititState $ \s -> s { users = M.insert userEmail user (users s) }
+               addUser (uUsername user) user
+               key <- newSession (SessionData userEmail)
+               cfg <- getConfig
+               addCookie (MaxAge $ sessionTimeout cfg) (mkCookie "sid" (show key))
+               base' <- getWikiBase
+               let destination = base' ++ "/"
+               seeOther (encUrl destination) $ toResponse ()
+      Left err ->
+               error err
+
+githubAuthHandlers :: OAuth2
+                   -> [Handler]
+githubAuthHandlers githubKey =
+  [ dir "_logout" $ withData logoutUser
+  , dir "_login" $ loginGithubUser githubKey
+  , dir "_githubCallback" $ withData $ oauthGithubCallback githubKey
+  , dir "_user" currentUser ]
+
 -- Login using RPX (see RPX development docs at https://rpxnow.com/docs)
 loginRPXUser :: RPars  -- ^ The parameters passed by the RPX callback call (after authentication has taken place
              -> Handler
@@ -448,7 +472,7 @@
   if isNothing mtoken
      then do
        let url = baseUrl cfg ++ "/_login?destination=" ++
-                  (fromMaybe ref $ rDestination params)
+                  fromMaybe ref (rDestination params)
        if null (rpxDomain cfg)
           then error "rpx-domain is not set."
           else do
diff --git a/Network/Gitit/Authentication/Github.hs b/Network/Gitit/Authentication/Github.hs
new file mode 100644
--- /dev/null
+++ b/Network/Gitit/Authentication/Github.hs
@@ -0,0 +1,89 @@
+{-# LANGUAGE OverloadedStrings, ScopedTypeVariables #-}
+
+module Network.Gitit.Authentication.Github (loginGithubUser, getGithubUser, GithubCallbackPars) where
+
+import Network.OAuth.OAuth2
+
+import Network.Gitit.Types
+import Network.Gitit.Server
+import Network.Gitit.State
+import qualified Data.ByteString.Char8 as BS
+import qualified Data.ByteString.Lazy as BSL
+import Network.HTTP.Client
+import Network.HTTP.Client.TLS
+import Control.Monad (liftM, mplus, mzero)
+import Data.Aeson
+import Data.Text (Text, pack, unpack)
+import Data.Text.Encoding (encodeUtf8)
+import Control.Applicative
+import Data.Char (chr)
+
+loginGithubUser :: OAuth2 -> Handler
+loginGithubUser githubKey = do
+  let state = "testGithubApi"
+  let scopes = "user:email"
+  let url = authorizationUrl githubKey `appendQueryParam` [("state", state), ("scope", scopes)]
+  seeOther (BS.unpack url) $ toResponse ("redirecting to github" :: String)
+
+getGithubUser :: OAuth2                  -- ^ Oauth2 configuration (client secret)
+              -> GithubCallbackPars      -- ^ Authentication code gained after authorization
+              -> IO (Either String User) -- ^ user email and name (password 'none')
+getGithubUser githubKey githubCallbackPars = do
+  let (Just code) = rCode githubCallbackPars
+  let setting = tlsManagerSettings
+  mgr <- newManager setting
+  token <- fetchAccessToken mgr githubKey (sToBS code)
+  let mUser = case token of
+                Right at -> do
+                      uinfo <- userInfo mgr at
+                      minfo <- mailInfo mgr at
+                      case (uinfo, minfo) of
+                         (Right githubUser, Right githubUserMail) -> do
+                                  user <- mkUser (unpack $ gname githubUser)
+                                                 (unpack $ email $ head githubUserMail)
+                                                 "none"
+                                  return $ Right user
+                         (Left err, _) -> return $ Left $ lbsToStr err
+                         (_, Left err) -> return $ Left $ lbsToStr err
+                Left err ->
+                     return $ Left $  "no access token found yet: " ++ lbsToStr  err
+  closeManager mgr
+  mUser
+
+data GithubCallbackPars = GithubCallbackPars { rCode :: Maybe String }
+                          deriving Show
+
+instance FromData GithubCallbackPars where
+    fromData = do
+         vcode <- liftM Just (look "code") `mplus` return Nothing
+         return GithubCallbackPars {rCode = vcode }
+
+userInfo :: Manager -> AccessToken -> IO (OAuth2Result GithubUser)
+userInfo mgr token = authGetJSON mgr token "https://api.github.com/user"
+
+mailInfo :: Manager -> AccessToken -> IO (OAuth2Result [GithubUserMail])
+mailInfo mgr token = authGetJSON mgr token "https://api.github.com/user/emails"
+
+data GithubUser = GithubUser { gid   :: Integer
+                             , gname :: Text
+                             } deriving (Show, Eq)
+
+instance FromJSON GithubUser where
+    parseJSON (Object o) = GithubUser
+                           <$> o .: "id"
+                           <*> o .: "name"
+    parseJSON _ = mzero
+
+data GithubUserMail = GithubUserMail { email :: Text
+                             } deriving (Show, Eq)
+
+instance FromJSON GithubUserMail where
+    parseJSON (Object o) = GithubUserMail
+                           <$> o .: "email"
+    parseJSON _ = mzero
+
+sToBS :: String -> BS.ByteString
+sToBS = encodeUtf8 . pack
+
+lbsToStr :: BSL.ByteString -> String
+lbsToStr = map (chr . fromEnum) . BSL.unpack
diff --git a/Network/Gitit/Compat/Except.hs b/Network/Gitit/Compat/Except.hs
new file mode 100644
--- /dev/null
+++ b/Network/Gitit/Compat/Except.hs
@@ -0,0 +1,36 @@
+{-# LANGUAGE CPP #-}
+module Network.Gitit.Compat.Except (
+                                   ExceptT
+                                 , Except
+                                 , Error(..)
+                                 , runExceptT
+                                 , runExcept
+                                 , MonadError
+                                 , throwError
+                                 , catchError )
+       where
+
+#if MIN_VERSION_mtl(2,2,1)
+import Control.Monad.Except
+
+class Error a where
+  noMsg  :: a
+  strMsg :: String -> a
+
+  noMsg    = strMsg ""
+  strMsg _ = noMsg
+
+#else
+import Control.Monad.Error
+import Control.Monad.Identity (Identity, runIdentity)
+
+type ExceptT = ErrorT
+
+type Except s a = ErrorT s Identity a
+
+runExceptT ::  ExceptT e m a -> m (Either e a)
+runExceptT = runErrorT
+
+runExcept :: ExceptT e Identity a -> Either e a
+runExcept = runIdentity . runExceptT
+#endif
diff --git a/Network/Gitit/Config.hs b/Network/Gitit/Config.hs
--- a/Network/Gitit/Config.hs
+++ b/Network/Gitit/Config.hs
@@ -21,25 +21,29 @@
 -}
 
 module Network.Gitit.Config ( getConfigFromFile
+                            , getConfigFromFiles
                             , getDefaultConfig
                             , readMimeTypesFile )
 where
 import Network.Gitit.Types
 import Network.Gitit.Server (mimeTypes)
 import Network.Gitit.Framework
-import Network.Gitit.Authentication (formAuthHandlers, rpxAuthHandlers, httpAuthHandlers)
+import Network.Gitit.Authentication (formAuthHandlers, rpxAuthHandlers, httpAuthHandlers, githubAuthHandlers)
 import Network.Gitit.Util (parsePageType, readFileUTF8)
 import System.Log.Logger (logM, Priority(..))
 import qualified Data.Map as M
 import Data.ConfigFile hiding (readfile)
-import Control.Monad.Error
-import System.Log.Logger ()
 import Data.List (intercalate)
 import Data.Char (toLower, toUpper, isDigit)
 import Paths_gitit (getDataFileName)
 import System.FilePath ((</>))
 import Text.Pandoc hiding (MathML, WebTeX, MathJax)
 import qualified Control.Exception as E
+import Network.OAuth.OAuth2
+import qualified Data.ByteString.Char8 as BS
+import Network.Gitit.Compat.Except
+import Control.Monad
+import Control.Monad.Trans
 
 forceEither :: Show e => Either e a -> a
 forceEither = either (error . show) id
@@ -50,6 +54,20 @@
   cp <- getDefaultConfigParser
   readfile cp fname >>= extractConfig . forceEither
 
+-- | Get configuration from config files.
+getConfigFromFiles :: [FilePath] -> IO Config
+getConfigFromFiles fnames = do
+  config <- getConfigParserFromFiles fnames
+  extractConfig config
+
+getConfigParserFromFiles :: [FilePath] ->
+                            IO ConfigParser
+getConfigParserFromFiles (fname:fnames) = do
+  cp <- getConfigParserFromFiles fnames
+  config <- readfile cp fname
+  return $ forceEither config
+getConfigParserFromFiles [] = getDefaultConfigParser
+
 -- | A version of readfile that treats the file as UTF-8.
 readfile :: MonadError CPError m
           => ConfigParser
@@ -61,7 +79,7 @@
 
 extractConfig :: ConfigParser -> IO Config
 extractConfig cp = do
-  config' <- runErrorT $ do
+  config' <- runExceptT $ do
       cfRepositoryType <- get cp "DEFAULT" "repository-type"
       cfRepositoryPath <- get cp "DEFAULT" "repository-path"
       cfDefaultPageType <- get cp "DEFAULT" "default-page-type"
@@ -125,9 +143,10 @@
                         "mercurial" -> Mercurial
                         x           -> error $ "Unknown repository type: " ++ x
       when (authMethod == "rpx" && cfRPXDomain == "") $
-         liftIO $ logM "gitit" WARNING $ "rpx-domain is not set"
+         liftIO $ logM "gitit" WARNING "rpx-domain is not set"
+      githubConfig <- extractGithubConfig cp
 
-      return $! Config{
+      return Config{
           repositoryPath       = cfRepositoryPath
         , repositoryType       = repotype'
         , defaultPageType      = pt
@@ -141,6 +160,7 @@
         , showLHSBirdTracks    = cfShowLHSBirdTracks
         , withUser             = case authMethod of
                                       "form"     -> withUserFromSession
+                                      "github"   -> withUserFromSession
                                       "http"     -> withUserFromHTTPAuth
                                       "rpx"      -> withUserFromSession
                                       _          -> id
@@ -152,6 +172,8 @@
 
         , authHandler          = case authMethod of
                                       "form"     -> msum formAuthHandlers
+                                      "github"   -> msum $ githubAuthHandlers
+                                                         $ githubConfig
                                       "http"     -> msum httpAuthHandlers
                                       "rpx"      -> msum rpxAuthHandlers
                                       _          -> mzero
@@ -204,12 +226,30 @@
                                     else Just cfPandocUserData
         , xssSanitize          = cfXssSanitize
         , recentActivityDays   = cfRecentActivityDays
+        , githubAuth           = githubConfig
         }
   case config' of
         Left (ParseError e, e') -> error $ "Parse error: " ++ e ++ "\n" ++ e'
         Left e                  -> error (show e)
         Right c                 -> return c
 
+extractGithubConfig ::  MonadError CPError m => ConfigParser
+                    -> m OAuth2
+extractGithubConfig cp = do
+      cfOauthClientId <- getGithubProp "oauthClientId"
+      cfOauthClientSecret <- getGithubProp "oauthClientSecret"
+      cfOauthCallback  <- getGithubProp "oauthCallback"
+      cfOauthOAuthorizeEndpoint  <- getGithubProp "oauthOAuthorizeEndpoint"
+      cfOauthAccessTokenEndpoint <- getGithubProp "oauthAccessTokenEndpoint"
+      return OAuth2{
+        oauthClientId =  BS.pack cfOauthClientId
+      , oauthClientSecret =  BS.pack cfOauthClientSecret
+      , oauthCallback = Just $ BS.pack cfOauthCallback
+      , oauthOAuthorizeEndpoint = BS.pack cfOauthOAuthorizeEndpoint
+      , oauthAccessTokenEndpoint = BS.pack cfOauthAccessTokenEndpoint
+      }
+  where getGithubProp = get cp "Github"
+
 fromQuotedMultiline :: String -> String
 fromQuotedMultiline = unlines . map doline . lines . dropWhile (`elem` " \t\n")
   where doline = dropWhile (`elem` " \t") . dropGt
@@ -256,10 +296,10 @@
 -- extensions, separated by spaces. Example: text/plain txt text
 readMimeTypesFile :: FilePath -> IO (M.Map String String)
 readMimeTypesFile f = E.catch
-  (liftM (foldr go M.empty . map words . lines) $ readFileUTF8 f)
+  (liftM (foldr (go . words)  M.empty . lines) $ readFileUTF8 f)
   handleMimeTypesFileNotFound
      where go []     m = m  -- skip blank lines
-           go (x:xs) m = foldr (\ext -> M.insert ext x) m xs
+           go (x:xs) m = foldr (`M.insert` x) m xs
            handleMimeTypesFileNotFound (e :: E.SomeException) = do
              logM "gitit" WARNING $ "Could not read mime types file: " ++
                f ++ "\n" ++ show e ++ "\n" ++ "Using defaults instead."
diff --git a/Network/Gitit/ContentTransformer.hs b/Network/Gitit/ContentTransformer.hs
--- a/Network/Gitit/ContentTransformer.hs
+++ b/Network/Gitit/ContentTransformer.hs
@@ -69,7 +69,7 @@
   )
 where
 
-import Control.Exception (throwIO, catch)
+import qualified Control.Exception as E
 import Control.Monad.State
 import Control.Monad.Reader (ask)
 import Data.Foldable (traverse_)
@@ -86,7 +86,6 @@
 import Network.HTTP (urlDecode)
 import Network.URI (isUnescapedInURI)
 import Network.URL (encString)
-import Prelude hiding (catch)
 import System.FilePath
 import qualified Text.Pandoc.Builder as B
 import Text.HTML.SanitizeXSS (sanitizeBalance)
@@ -274,8 +273,8 @@
   file <- getFileName
   fs <- lift getFileStore
   let rev = pRevision params
-  liftIO $ catch (liftM Just $ FS.retrieve fs file rev)
-                 (\e -> if e == FS.NotFound then return Nothing else throwIO e)
+  liftIO $ E.catch (liftM Just $ FS.retrieve fs file rev)
+               (\e -> if e == FS.NotFound then return Nothing else E.throwIO e)
 
 --
 -- Response-generating combinators
diff --git a/Network/Gitit/Export.hs b/Network/Gitit/Export.hs
--- a/Network/Gitit/Export.hs
+++ b/Network/Gitit/Export.hs
@@ -124,13 +124,18 @@
                         $ dropWhile (not . isPrefixOf "<!-- {{{{ dzslides core")
                         $ lines dztempl
                   else return ""
-    let h = writeHtmlString opts'{
+    let opts'' = opts'{
                 writerVariables =
                   ("body",body''):("dzslides-core",dzcore):("highlighting-css",pygmentsCss):variables'
                ,writerTemplate = template
                ,writerUserDataDir = pandocUserData cfg
-               } (Pandoc meta [])
+               }
+    let h = writeHtmlString opts'' (Pandoc meta [])
+#if MIN_VERSION_pandoc(1,13,0)
+    h' <- liftIO $ makeSelfContained opts'' h
+#else
     h' <- liftIO $ makeSelfContained (pandocUserData cfg) h
+#endif
     ok . setContentType "text/html;charset=UTF-8" .
       -- (setFilename (page ++ ".html")) .
       toResponseBS B.empty $ fromString h'
diff --git a/Network/Gitit/Framework.hs b/Network/Gitit/Framework.hs
--- a/Network/Gitit/Framework.hs
+++ b/Network/Gitit/Framework.hs
@@ -60,7 +60,7 @@
 import Network.Gitit.Types
 import Data.FileStore
 import Data.Char (toLower)
-import Control.Monad (mzero, liftM, unless, MonadPlus)
+import Control.Monad (mzero, liftM, unless)
 import qualified Data.Map as M
 import qualified Data.ByteString.UTF8 as UTF8
 import qualified Data.ByteString.Lazy.UTF8 as LazyUTF8
diff --git a/Network/Gitit/Handlers.hs b/Network/Gitit/Handlers.hs
--- a/Network/Gitit/Handlers.hs
+++ b/Network/Gitit/Handlers.hs
@@ -63,9 +63,8 @@
 import Network.Gitit.ContentTransformer (showRawPage, showFileAsText, showPage,
         exportPage, showHighlightedSource, preview, applyPreCommitPlugins)
 import Network.Gitit.Page (readCategories)
-import Control.Exception (throwIO, catch, try)
+import qualified Control.Exception as E
 import System.FilePath
-import Prelude hiding (catch)
 import Network.Gitit.State
 import Text.XHtml hiding ( (</>), dir, method, password, rev )
 import qualified Text.XHtml as X ( method )
@@ -90,7 +89,7 @@
          let rev = pRevision params
          mimetype <- getMimeTypeForExtension
                       (takeExtension path')
-         res <- liftIO $ try
+         res <- liftIO $ E.try
                 (retrieve fs path' rev :: IO B.ByteString)
          case res of
                 Right contents -> ignoreFilters >>  -- don't compress
@@ -201,10 +200,10 @@
                         Just u  -> return (uUsername u, uEmail u)
   let overwrite = pOverwrite params
   fs <- getFileStore
-  exists <- liftIO $ catch (latest fs wikiname >> return True) $ \e ->
+  exists <- liftIO $ E.catch (latest fs wikiname >> return True) $ \e ->
                       if e == NotFound
                          then return False
-                         else throwIO e >> return True
+                         else E.throwIO e >> return True
   let inStaticDir = staticDir cfg `isPrefixOf` (repositoryPath cfg </> wikiname)
   let inTemplatesDir = templatesDir cfg `isPrefixOf` (repositoryPath cfg </> wikiname)
   let dirs' = splitDirectories $ takeDirectory wikiname
@@ -272,7 +271,7 @@
   fs <- getFileStore
   matchLines <- if null patterns
                    then return []
-                   else liftIO $ catch (search fs SearchQuery{
+                   else liftIO $ E.catch (search fs SearchQuery{
                                                   queryPatterns = patterns
                                                 , queryWholeWords = True
                                                 , queryMatchAll = True
@@ -465,10 +464,10 @@
                             -- immediately preceding revision
                             then Just $ revId $ upto !! 1
                             else Nothing
-  result' <- liftIO $ try $ getDiff fs file from' to
+  result' <- liftIO $ E.try $ getDiff fs file from' to
   case result' of
        Left NotFound  -> mzero
-       Left e         -> liftIO $ throwIO e
+       Left e         -> liftIO $ E.throwIO e
        Right htmlDiff -> formattedPage defaultPageLayout{
                                           pgPageName = page,
                                           pgRevision = from' `mplus` to,
@@ -500,7 +499,7 @@
   let rev = pRevision params  -- if this is set, we're doing a revert
   fs <- getFileStore
   page <- getPage
-  let getRevisionAndText = catch
+  let getRevisionAndText = E.catch
         (do c <- liftIO $ retrieve fs (pathForPage page) rev
             -- even if pRevision is set, we return revId of latest
             -- saved version (because we're doing a revert and
@@ -510,7 +509,7 @@
             return (Just $ revId r, c))
         (\e -> if e == NotFound
                   then return (Nothing, "")
-                  else throwIO e)
+                  else E.throwIO e)
   (mbRev, raw) <- case pEditedText params of
                          Nothing -> liftIO getRevisionAndText
                          Just t  -> let r = if null (pSHA1 params)
@@ -573,11 +572,11 @@
   fs <- getFileStore
   -- determine whether there is a corresponding page, and if not whether there
   -- is a corresponding file
-  pageTest <- liftIO $ try $ latest fs (pathForPage page)
+  pageTest <- liftIO $ E.try $ latest fs (pathForPage page)
   fileToDelete <- case pageTest of
                        Right _        -> return $ pathForPage page  -- a page
                        Left  NotFound -> do
-                         fileTest <- liftIO $ try $ latest fs page
+                         fileTest <- liftIO $ E.try $ latest fs page
                          case fileTest of
                               Right _       -> return page  -- a source file
                               Left NotFound -> return ""
@@ -642,12 +641,12 @@
                                      return (Right ())
                        else do
                          expireCachedFile (pathForPage page) `mplus` return ()
-                         liftIO $ catch (modify fs (pathForPage page)
+                         liftIO $ E.catch (modify fs (pathForPage page)
                                             oldSHA1 (Author user email) logMsg
                                             editedText)
                                      (\e -> if e == Unchanged
                                                then return (Right ())
-                                               else throwIO e)
+                                               else E.throwIO e)
        case modifyRes of
             Right () -> seeOther (base' ++ urlForPage page) $ toResponse $ p << "Page updated"
             Left (MergeInfo mergedWithRev conflicts mergedText) -> do
diff --git a/Network/Gitit/Layout.hs b/Network/Gitit/Layout.hs
--- a/Network/Gitit/Layout.hs
+++ b/Network/Gitit/Layout.hs
@@ -34,7 +34,6 @@
 import Network.Gitit.Export (exportFormats)
 import Network.HTTP (urlEncodeVars)
 import qualified Text.StringTemplate as T
-import Prelude hiding (catch)
 import Text.XHtml hiding ( (</>), dir, method, password, rev )
 import Text.XHtml.Strict ( stringToHtmlString )
 import Data.Maybe (isNothing, isJust, fromJust)
@@ -79,7 +78,7 @@
                            'h':'t':'t':'p':_  -> x
                            _                  -> base' ++ "/js/" ++ x
 
-      scripts  = ["jquery.min.js", "jquery-ui.packed.js", "footnotes.js"] ++ pgScripts layout
+      scripts  = ["jquery-1.2.6.min.js", "jquery-ui-combined-1.6rc2.min.js", "footnotes.js"] ++ pgScripts layout
       scriptLink x = script ! [src (prefixedScript x),
         thetype "text/javascript"] << noHtml
       javascriptlinks = renderHtmlFragment $ concatHtml $ map scriptLink scripts
diff --git a/Network/Gitit/Page.hs b/Network/Gitit/Page.hs
--- a/Network/Gitit/Page.hs
+++ b/Network/Gitit/Page.hs
@@ -59,8 +59,7 @@
 import qualified Data.ByteString as B
 import qualified Data.ByteString.Char8 as BC
 import System.IO (withFile, Handle, IOMode(..))
-import Prelude hiding (catch)
-import Control.Exception (catch, throwIO)
+import qualified Control.Exception as E
 import System.IO.Error (isEOFError)
 #if MIN_VERSION_base(4,5,0)
 #else
@@ -167,15 +166,15 @@
 #else
   withFile (encodeString f) ReadMode $ \h ->
 #endif
-    catch (do fl <- B.hGetLine h
-              if dashline fl
-                 then do -- get rest of metadata
-                   rest <- hGetLinesTill h dotline
-                   let (md,_) = parseMetadata $ unlines $ "---":rest
-                   return $ splitCategories $ fromMaybe ""
-                          $ lookup "categories" md
-                 else return [])
-       (\e -> if isEOFError e then return [] else throwIO e)
+    E.catch (do fl <- B.hGetLine h
+                if dashline fl
+                   then do -- get rest of metadata
+                     rest <- hGetLinesTill h dotline
+                     let (md,_) = parseMetadata $ unlines $ "---":rest
+                     return $ splitCategories $ fromMaybe ""
+                            $ lookup "categories" md
+                   else return [])
+       (\e -> if isEOFError e then return [] else E.throwIO e)
 
 dashline :: B.ByteString -> Bool
 dashline x =
diff --git a/Network/Gitit/Plugins.hs b/Network/Gitit/Plugins.hs
--- a/Network/Gitit/Plugins.hs
+++ b/Network/Gitit/Plugins.hs
@@ -23,7 +23,7 @@
 module Network.Gitit.Plugins ( loadPlugin, loadPlugins )
 where
 import Network.Gitit.Types
-import System.FilePath
+import System.FilePath (takeBaseName)
 import Control.Monad (unless)
 import System.Log.Logger (logM, Priority(..))
 #ifdef _PLUGINS
diff --git a/Network/Gitit/Types.hs b/Network/Gitit/Types.hs
--- a/Network/Gitit/Types.hs
+++ b/Network/Gitit/Types.hs
@@ -37,6 +37,7 @@
 import Network.Gitit.Server
 import Text.HTML.TagSoup.Entity (lookupEntity)
 import Data.Char (isSpace)
+import Network.OAuth.OAuth2
 
 data PageType = Markdown | RST | LaTeX | HTML | Textile | Org | DocBook
                 deriving (Read, Show, Eq)
@@ -149,7 +150,10 @@
   -- | Filter HTML through xss-sanitize
   xssSanitize          :: Bool,
   -- | The default number of days in the past to look for \"recent\" activity
-  recentActivityDays   :: Int
+  recentActivityDays   :: Int,
+  -- | Github client data for authentication (id, secret, callback,
+  -- authorize endpoint, access token endpoint)
+  githubAuth           :: OAuth2
   }
 
 -- | Data for rendering a wiki page.
diff --git a/Network/Gitit/Util.hs b/Network/Gitit/Util.hs
--- a/Network/Gitit/Util.hs
+++ b/Network/Gitit/Util.hs
@@ -25,6 +25,7 @@
                           , trim
                           , yesOrNo
                           , parsePageType
+                          , encUrl
                           )
 where
 import System.Directory
@@ -32,10 +33,11 @@
 import System.FilePath ((</>), (<.>))
 import System.IO.Error (isAlreadyExistsError)
 import Control.Monad.Trans (liftIO)
-import Data.Char (toLower)
+import Data.Char (toLower, isAscii)
 import Network.Gitit.Types
 import qualified Control.Exception as E
 import qualified Text.Pandoc.UTF8 as UTF8
+import Network.URL (encString)
 
 -- | Read file as UTF-8 string.  Encode filename as UTF-8.
 readFileUTF8 :: FilePath -> IO String
@@ -101,3 +103,5 @@
        "latex+lhs"    -> (LaTeX,True)
        x              -> error $ "Unknown page type: " ++ x
 
+encUrl :: String -> String
+encUrl = encString True isAscii
diff --git a/README.markdown b/README.markdown
--- a/README.markdown
+++ b/README.markdown
@@ -345,6 +345,22 @@
 Another approach is to use HTTP authentication. (See the config file comments on
 `authentication-method`.)
 
+Authentication through github
+-----------------------------
+
+If you want to authenticate the user from github through oauth2, you need to
+register your app with github to obtain a OAuth client secret and add the
+following section to your configuration file:
+
+```
+[Github]
+oauthclientid: 01239456789abcdef012
+oauthclientsecret: 01239456789abcdef01239456789abcdef012394
+oauthcallback: http://mysite/_githubCallback
+oauthoauthorizeendpoint: https://github.com/login/oauth/authorize
+oauthaccesstokenendpoint: https://github.com/login/oauth/access_token
+```
+
 Plugins
 =======
 
@@ -452,7 +468,7 @@
 ------------------------------------
 
 Set up your DNS so that `http://wiki.mysite.com` maps to
-your server's IP address. Make sure that the `mod_proxy` module is
+your server's IP address. Make sure that the `mod_proxy`, `mod_proxy_http` and `mod_rewrite` modules are
 loaded, and set up a virtual host with the following configuration:
 
     <VirtualHost *>
diff --git a/data/default.conf b/data/default.conf
--- a/data/default.conf
+++ b/data/default.conf
@@ -37,6 +37,10 @@
 # will attempt to log in through https://rpxnow.com.
 # This requires that 'rpx-domain', 'rpx-key', and 'base-url'
 # be set below, and that 'curl' be in the system path.
+# 'github' means that you are redirected to github website and
+# need to avail gitit to use your credential from there (github name and
+# email). Your email is used to identify you when you push your wiki data
+# to git to identify you as the author.
 
 user-file: gitit-users
 # specifies the path of the file containing user login information.
@@ -62,7 +66,7 @@
 # rendered correctly if RST is selected. The same goes for LaTeX and
 # HTML.
 
-math: MathML
+math: mathjax
 # specifies how LaTeX math is to be displayed.  Possible values
 # are MathML, raw, mathjax, jsMath, and google.  If mathml is selected,
 # gitit will convert LaTeX math to MathML and link in a script,
@@ -76,7 +80,7 @@
 # API is called to render the formula as an image. This requires a connection
 # to google, and might raise a technical or a privacy problem.
 
-mathjax-script: https://d3eoax9i5htok0.cloudfront.net/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML
+mathjax-script: https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML
 # specifies the path to MathJax rendering script.
 # You might want to use your own MathJax script to render formulas without
 # Internet connection or if you want to use some special LaTeX packages.
@@ -275,3 +279,11 @@
 # if the activity page receives no 'since' parameter specifiying the time
 # thereafter which to show the changes, it will by default show "recent"
 # changes. This allows you to specify how recent "recent" means, in days.
+
+[Github]
+# replace dummy oauthclientid and oauthclientsecret:
+oauthclientid: 01239456789abcdef012
+oauthclientsecret: 01239456789abcdef01239456789abcdef012394
+oauthcallback: http://mysite/_githubCallback
+oauthoauthorizeendpoint: https://github.com/login/oauth/authorize
+oauthaccesstokenendpoint: https://github.com/login/oauth/access_token
diff --git a/data/static/js/jquery-1.2.6.min.js b/data/static/js/jquery-1.2.6.min.js
new file mode 100644
--- /dev/null
+++ b/data/static/js/jquery-1.2.6.min.js
@@ -0,0 +1,32 @@
+/*
+ * jQuery 1.2.6 - New Wave Javascript
+ *
+ * Copyright (c) 2008 John Resig (jquery.com)
+ * Dual licensed under the MIT (MIT-LICENSE.txt)
+ * and GPL (GPL-LICENSE.txt) licenses.
+ *
+ * $Date: 2008-05-24 14:22:17 -0400 (Sat, 24 May 2008) $
+ * $Rev: 5685 $
+ */
+(function(){var _jQuery=window.jQuery,_$=window.$;var jQuery=window.jQuery=window.$=function(selector,context){return new jQuery.fn.init(selector,context);};var quickExpr=/^[^<]*(<(.|\s)+>)[^>]*$|^#(\w+)$/,isSimple=/^.[^:#\[\.]*$/,undefined;jQuery.fn=jQuery.prototype={init:function(selector,context){selector=selector||document;if(selector.nodeType){this[0]=selector;this.length=1;return this;}if(typeof selector=="string"){var match=quickExpr.exec(selector);if(match&&(match[1]||!context)){if(match[1])selector=jQuery.clean([match[1]],context);else{var elem=document.getElementById(match[3]);if(elem){if(elem.id!=match[3])return jQuery().find(selector);return jQuery(elem);}selector=[];}}else
+return jQuery(context).find(selector);}else if(jQuery.isFunction(selector))return jQuery(document)[jQuery.fn.ready?"ready":"load"](selector);return this.setArray(jQuery.makeArray(selector));},jquery:"1.2.6",size:function(){return this.length;},length:0,get:function(num){return num==undefined?jQuery.makeArray(this):this[num];},pushStack:function(elems){var ret=jQuery(elems);ret.prevObject=this;return ret;},setArray:function(elems){this.length=0;Array.prototype.push.apply(this,elems);return this;},each:function(callback,args){return jQuery.each(this,callback,args);},index:function(elem){var ret=-1;return jQuery.inArray(elem&&elem.jquery?elem[0]:elem,this);},attr:function(name,value,type){var options=name;if(name.constructor==String)if(value===undefined)return this[0]&&jQuery[type||"attr"](this[0],name);else{options={};options[name]=value;}return this.each(function(i){for(name in options)jQuery.attr(type?this.style:this,name,jQuery.prop(this,options[name],type,i,name));});},css:function(key,value){if((key=='width'||key=='height')&&parseFloat(value)<0)value=undefined;return this.attr(key,value,"curCSS");},text:function(text){if(typeof text!="object"&&text!=null)return this.empty().append((this[0]&&this[0].ownerDocument||document).createTextNode(text));var ret="";jQuery.each(text||this,function(){jQuery.each(this.childNodes,function(){if(this.nodeType!=8)ret+=this.nodeType!=1?this.nodeValue:jQuery.fn.text([this]);});});return ret;},wrapAll:function(html){if(this[0])jQuery(html,this[0].ownerDocument).clone().insertBefore(this[0]).map(function(){var elem=this;while(elem.firstChild)elem=elem.firstChild;return elem;}).append(this);return this;},wrapInner:function(html){return this.each(function(){jQuery(this).contents().wrapAll(html);});},wrap:function(html){return this.each(function(){jQuery(this).wrapAll(html);});},append:function(){return this.domManip(arguments,true,false,function(elem){if(this.nodeType==1)this.appendChild(elem);});},prepend:function(){return this.domManip(arguments,true,true,function(elem){if(this.nodeType==1)this.insertBefore(elem,this.firstChild);});},before:function(){return this.domManip(arguments,false,false,function(elem){this.parentNode.insertBefore(elem,this);});},after:function(){return this.domManip(arguments,false,true,function(elem){this.parentNode.insertBefore(elem,this.nextSibling);});},end:function(){return this.prevObject||jQuery([]);},find:function(selector){var elems=jQuery.map(this,function(elem){return jQuery.find(selector,elem);});return this.pushStack(/[^+>] [^+>]/.test(selector)||selector.indexOf("..")>-1?jQuery.unique(elems):elems);},clone:function(events){var ret=this.map(function(){if(jQuery.browser.msie&&!jQuery.isXMLDoc(this)){var clone=this.cloneNode(true),container=document.createElement("div");container.appendChild(clone);return jQuery.clean([container.innerHTML])[0];}else
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diff --git a/data/static/js/jquery-ui-combined-1.6rc2.min.js b/data/static/js/jquery-ui-combined-1.6rc2.min.js
new file mode 100644
--- /dev/null
+++ b/data/static/js/jquery-ui-combined-1.6rc2.min.js
@@ -0,0 +1,1 @@
+;(function($){var _remove=$.fn.remove;$.fn.remove=function(){$("*",this).add(this).triggerHandler("remove");return _remove.apply(this,arguments)};function isVisible(element){function checkStyles(element){var style=element.style;return(style.display!='none'&&style.visibility!='hidden')}var visible=checkStyles(element);(visible&&$.each($.dir(element,'parentNode'),function(){return(visible=checkStyles(this))}));return visible}$.extend($.expr[':'],{data:function(a,i,m){return $.data(a,m[3])},tabbable:function(a,i,m){var nodeName=a.nodeName.toLowerCase();return(a.tabIndex>=0&&(('a'==nodeName&&a.href)||(/input|select|textarea|button/.test(nodeName)&&'hidden'!=a.type&&!a.disabled))&&isVisible(a))}});$.keyCode={BACKSPACE:8,CAPS_LOCK:20,COMMA:188,CONTROL:17,DELETE:46,DOWN:40,END:35,ENTER:13,ESCAPE:27,HOME:36,INSERT:45,LEFT:37,NUMPAD_ADD:107,NUMPAD_DECIMAL:110,NUMPAD_DIVIDE:111,NUMPAD_ENTER:108,NUMPAD_MULTIPLY:106,NUMPAD_SUBTRACT:109,PAGE_DOWN:34,PAGE_UP:33,PERIOD:190,RIGHT:39,SHIFT:16,SPACE:32,TAB:9,UP:38};function getter(namespace,plugin,method,args){function getMethods(type){var methods=$[namespace][plugin][type]||[];return(typeof methods=='string'?methods.split(/,?\s+/):methods)}var methods=getMethods('getter');if(args.length==1&&typeof args[0]=='string'){methods=methods.concat(getMethods('getterSetter'))}return($.inArray(method,methods)!=-1)}$.widget=function(name,prototype){var namespace=name.split(".")[0];name=name.split(".")[1];$.fn[name]=function(options){var isMethodCall=(typeof 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self._mouseDown(e)});if($.browser.msie){this._mouseUnselectable=this.element.attr('unselectable');this.element.attr('unselectable','on')}this.started=false},_mouseDestroy:function(){this.element.unbind('.'+this.widgetName);($.browser.msie&&this.element.attr('unselectable',this._mouseUnselectable))},_mouseDown:function(e){(this._mouseStarted&&this._mouseUp(e));this._mouseDownEvent=e;var self=this,btnIsLeft=(e.which==1),elIsCancel=(typeof this.options.cancel=="string"?$(e.target).parents().add(e.target).filter(this.options.cancel).length:false);if(!btnIsLeft||elIsCancel||!this._mouseCapture(e)){return true}this.mouseDelayMet=!this.options.delay;if(!this.mouseDelayMet){this._mouseDelayTimer=setTimeout(function(){self.mouseDelayMet=true},this.options.delay)}if(this._mouseDistanceMet(e)&&this._mouseDelayMet(e)){this._mouseStarted=(this._mouseStart(e)!==false);if(!this._mouseStarted){e.preventDefault();return true}}this._mouseMoveDelegate=function(e){return self._mouseMove(e)};this._mouseUpDelegate=function(e){return self._mouseUp(e)};$(document).bind('mousemove.'+this.widgetName,this._mouseMoveDelegate).bind('mouseup.'+this.widgetName,this._mouseUpDelegate);return false},_mouseMove:function(e){if($.browser.msie&&!e.button){return this._mouseUp(e)}if(this._mouseStarted){this._mouseDrag(e);return false}if(this._mouseDistanceMet(e)&&this._mouseDelayMet(e)){this._mouseStarted=(this._mouseStart(this._mouseDownEvent,e)!==false);(this._mouseStarted?this._mouseDrag(e):this._mouseUp(e))}return!this._mouseStarted},_mouseUp:function(e){$(document).unbind('mousemove.'+this.widgetName,this._mouseMoveDelegate).unbind('mouseup.'+this.widgetName,this._mouseUpDelegate);if(this._mouseStarted){this._mouseStarted=false;this._mouseStop(e)}return false},_mouseDistanceMet:function(e){return(Math.max(Math.abs(this._mouseDownEvent.pageX-e.pageX),Math.abs(this._mouseDownEvent.pageY-e.pageY))>=this.options.distance)},_mouseDelayMet:function(e){return this.mouseDelayMet},_mouseStart:function(e){},_mouseDrag:function(e){},_mouseStop:function(e){},_mouseCapture:function(e){return true}};$.ui.mouse.defaults={cancel:null,distance:1,delay:0}})(jQuery);(function($){$.widget("ui.draggable",$.extend({},$.ui.mouse,{getHandle:function(e){var handle=!this.options.handle||!$(this.options.handle,this.element).length?true:false;$(this.options.handle,this.element).find("*").andSelf().each(function(){if(this==e.target)handle=true});return handle},createHelper:function(){var o=this.options;var helper=$.isFunction(o.helper)?$(o.helper.apply(this.element[0],[e])):(o.helper=='clone'?this.element.clone():this.element);if(!helper.parents('body').length)helper.appendTo((o.appendTo=='parent'?this.element[0].parentNode:o.appendTo));if(helper[0]!=this.element[0]&&!(/(fixed|absolute)/).test(helper.css("position")))helper.css("position","absolute");return helper},_init:function(){if(this.options.helper=='original'&&!(/^(?:r|a|f)/).test(this.element.css("position")))this.element[0].style.position='relative';(this.options.cssNamespace&&this.element.addClass(this.options.cssNamespace+"-draggable"));(this.options.disabled&&this.element.addClass('ui-draggable-disabled'));this._mouseInit()},_mouseCapture:function(e){var o=this.options;if(this.helper||o.disabled||$(e.target).is('.ui-resizable-handle'))return false;this.handle=this.getHandle(e);if(!this.handle)return false;return true},_mouseStart:function(e){var o=this.options;this.helper=this.createHelper();if($.ui.ddmanager)$.ui.ddmanager.current=this;this.margins={left:(parseInt(this.element.css("marginLeft"),10)||0),top:(parseInt(this.element.css("marginTop"),10)||0)};this.cssPosition=this.helper.css("position");this.offset=this.element.offset();this.offset={top:this.offset.top-this.margins.top,left:this.offset.left-this.margins.left};this.offset.click={left:e.pageX-this.offset.left,top:e.pageY-this.offset.top};this.cacheScrollParents();this.offsetParent=this.helper.offsetParent();var po=this.offsetParent.offset();if(this.offsetParent[0]==document.body&&$.browser.mozilla)po={top:0,left:0};this.offset.parent={top:po.top+(parseInt(this.offsetParent.css("borderTopWidth"),10)||0),left:po.left+(parseInt(this.offsetParent.css("borderLeftWidth"),10)||0)};if(this.cssPosition=="relative"){var p=this.element.position();this.offset.relative={top:p.top-(parseInt(this.helper.css("top"),10)||0)+this.scrollTopParent.scrollTop(),left:p.left-(parseInt(this.helper.css("left"),10)||0)+this.scrollLeftParent.scrollLeft()}}else{this.offset.relative={top:0,left:0}}this.originalPosition=this._generatePosition(e);this.cacheHelperProportions();if(o.cursorAt)this.adjustOffsetFromHelper(o.cursorAt);$.extend(this,{PAGEY_INCLUDES_SCROLL:(this.cssPosition=="absolute"&&(!this.scrollTopParent[0].tagName||(/(html|body)/i).test(this.scrollTopParent[0].tagName))),PAGEX_INCLUDES_SCROLL:(this.cssPosition=="absolute"&&(!this.scrollLeftParent[0].tagName||(/(html|body)/i).test(this.scrollLeftParent[0].tagName))),OFFSET_PARENT_NOT_SCROLL_PARENT_Y:this.scrollTopParent[0]!=this.offsetParent[0]&&!(this.scrollTopParent[0]==document&&(/(body|html)/i).test(this.offsetParent[0].tagName)),OFFSET_PARENT_NOT_SCROLL_PARENT_X:this.scrollLeftParent[0]!=this.offsetParent[0]&&!(this.scrollLeftParent[0]==document&&(/(body|html)/i).test(this.offsetParent[0].tagName))});if(o.containment)this.setContainment();this._propagate("start",e);this.cacheHelperProportions();if($.ui.ddmanager&&!o.dropBehaviour)$.ui.ddmanager.prepareOffsets(this,e);this.helper.addClass("ui-draggable-dragging");this._mouseDrag(e);return true},cacheScrollParents:function(){this.scrollTopParent=function(el){do{if(/auto|scroll/.test(el.css('overflow'))||(/auto|scroll/).test(el.css('overflow-y')))return el;el=el.parent()}while(el[0].parentNode);return $(document)}(this.helper);this.scrollLeftParent=function(el){do{if(/auto|scroll/.test(el.css('overflow'))||(/auto|scroll/).test(el.css('overflow-x')))return el;el=el.parent()}while(el[0].parentNode);return $(document)}(this.helper)},adjustOffsetFromHelper:function(obj){if(obj.left!=undefined)this.offset.click.left=obj.left+this.margins.left;if(obj.right!=undefined)this.offset.click.left=this.helperProportions.width-obj.right+this.margins.left;if(obj.top!=undefined)this.offset.click.top=obj.top+this.margins.top;if(obj.bottom!=undefined)this.offset.click.top=this.helperProportions.height-obj.bottom+this.margins.top},cacheHelperProportions:function(){this.helperProportions={width:this.helper.outerWidth(),height:this.helper.outerHeight()}},setContainment:function(){var o=this.options;if(o.containment=='parent')o.containment=this.helper[0].parentNode;if(o.containment=='document'||o.containment=='window')this.containment=[0-this.offset.relative.left-this.offset.parent.left,0-this.offset.relative.top-this.offset.parent.top,$(o.containment=='document'?document:window).width()-this.offset.relative.left-this.offset.parent.left-this.helperProportions.width-this.margins.left-(parseInt(this.element.css("marginRight"),10)||0),($(o.containment=='document'?document:window).height()||document.body.parentNode.scrollHeight)-this.offset.relative.top-this.offset.parent.top-this.helperProportions.height-this.margins.top-(parseInt(this.element.css("marginBottom"),10)||0)];if(!(/^(document|window|parent)$/).test(o.containment)){var ce=$(o.containment)[0];var co=$(o.containment).offset();var over=($(ce).css("overflow")!='hidden');this.containment=[co.left+(parseInt($(ce).css("borderLeftWidth"),10)||0)-this.offset.relative.left-this.offset.parent.left,co.top+(parseInt($(ce).css("borderTopWidth"),10)||0)-this.offset.relative.top-this.offset.parent.top,co.left+(over?Math.max(ce.scrollWidth,ce.offsetWidth):ce.offsetWidth)-(parseInt($(ce).css("borderLeftWidth"),10)||0)-this.offset.relative.left-this.offset.parent.left-this.helperProportions.width-this.margins.left-(parseInt(this.element.css("marginRight"),10)||0),co.top+(over?Math.max(ce.scrollHeight,ce.offsetHeight):ce.offsetHeight)-(parseInt($(ce).css("borderTopWidth"),10)||0)-this.offset.relative.top-this.offset.parent.top-this.helperProportions.height-this.margins.top-(parseInt(this.element.css("marginBottom"),10)||0)]}},_convertPositionTo:function(d,pos){if(!pos)pos=this.position;var mod=d=="absolute"?1:-1;return{top:(pos.top+this.offset.relative.top*mod+this.offset.parent.top*mod-(this.cssPosition=="fixed"||this.PAGEY_INCLUDES_SCROLL||this.OFFSET_PARENT_NOT_SCROLL_PARENT_Y?0:this.scrollTopParent.scrollTop())*mod+(this.cssPosition=="fixed"?$(document).scrollTop():0)*mod+this.margins.top*mod),left:(pos.left+this.offset.relative.left*mod+this.offset.parent.left*mod-(this.cssPosition=="fixed"||this.PAGEX_INCLUDES_SCROLL||this.OFFSET_PARENT_NOT_SCROLL_PARENT_X?0:this.scrollLeftParent.scrollLeft())*mod+(this.cssPosition=="fixed"?$(document).scrollLeft():0)*mod+this.margins.left*mod)}},_generatePosition:function(e){var o=this.options;var position={top:(e.pageY-this.offset.click.top-this.offset.relative.top-this.offset.parent.top+(this.cssPosition=="fixed"||this.PAGEY_INCLUDES_SCROLL||this.OFFSET_PARENT_NOT_SCROLL_PARENT_Y?0:this.scrollTopParent.scrollTop())-(this.cssPosition=="fixed"?$(document).scrollTop():0)),left:(e.pageX-this.offset.click.left-this.offset.relative.left-this.offset.parent.left+(this.cssPosition=="fixed"||this.PAGEX_INCLUDES_SCROLL||this.OFFSET_PARENT_NOT_SCROLL_PARENT_X?0:this.scrollLeftParent.scrollLeft())-(this.cssPosition=="fixed"?$(document).scrollLeft():0))};if(!this.originalPosition)return position;if(this.containment){if(position.left<this.containment[0])position.left=this.containment[0];if(position.top<this.containment[1])position.top=this.containment[1];if(position.left>this.containment[2])position.left=this.containment[2];if(position.top>this.containment[3])position.top=this.containment[3]}if(o.grid){var top=this.originalPosition.top+Math.round((position.top-this.originalPosition.top)/o.grid[1])*o.grid[1];position.top=this.containment?(!(top<this.containment[1]||top>this.containment[3])?top:(!(top<this.containment[1])?top-o.grid[1]:top+o.grid[1])):top;var left=this.originalPosition.left+Math.round((position.left-this.originalPosition.left)/o.grid[0])*o.grid[0];position.left=this.containment?(!(left<this.containment[0]||left>this.containment[2])?left:(!(left<this.containment[0])?left-o.grid[0]:left+o.grid[0])):left}return position},_mouseDrag:function(e){this.position=this._generatePosition(e);this.positionAbs=this._convertPositionTo("absolute");this.position=this._propagate("drag",e)||this.position;if(!this.options.axis||this.options.axis!="y")this.helper[0].style.left=this.position.left+'px';if(!this.options.axis||this.options.axis!="x")this.helper[0].style.top=this.position.top+'px';if($.ui.ddmanager)$.ui.ddmanager.drag(this,e);return false},_mouseStop:function(e){var dropped=false;if($.ui.ddmanager&&!this.options.dropBehaviour)var dropped=$.ui.ddmanager.drop(this,e);if((this.options.revert=="invalid"&&!dropped)||(this.options.revert=="valid"&&dropped)||this.options.revert===true||($.isFunction(this.options.revert)&&this.options.revert.call(this.element,dropped))){var self=this;$(this.helper).animate(this.originalPosition,parseInt(this.options.revertDuration,10)||500,function(){self._propagate("stop",e);self._clear()})}else{this._propagate("stop",e);this._clear()}return false},_clear:function(){this.helper.removeClass("ui-draggable-dragging");if(this.options.helper!='original'&&!this.cancelHelperRemoval)this.helper.remove();this.helper=null;this.cancelHelperRemoval=false},plugins:{},uiHash:function(e){return{helper:this.helper,position:this.position,absolutePosition:this.positionAbs,options:this.options}},_propagate:function(n,e){$.ui.plugin.call(this,n,[e,this.uiHash()]);if(n=="drag")this.positionAbs=this._convertPositionTo("absolute");return this.element.triggerHandler(n=="drag"?n:"drag"+n,[e,this.uiHash()],this.options[n])},destroy:function(){if(!this.element.data('draggable'))return;this.element.removeData("draggable").unbind(".draggable").removeClass('ui-draggable ui-draggable-dragging ui-draggable-disabled');this._mouseDestroy()}}));$.extend($.ui.draggable,{defaults:{appendTo:"parent",axis:false,cancel:":input",delay:0,distance:1,helper:"original",scope:"default",cssNamespace:"ui"}});$.ui.plugin.add("draggable","cursor",{start:function(e,ui){var t=$('body');if(t.css("cursor"))ui.options._cursor=t.css("cursor");t.css("cursor",ui.options.cursor)},stop:function(e,ui){if(ui.options._cursor)$('body').css("cursor",ui.options._cursor)}});$.ui.plugin.add("draggable","zIndex",{start:function(e,ui){var t=$(ui.helper);if(t.css("zIndex"))ui.options._zIndex=t.css("zIndex");t.css('zIndex',ui.options.zIndex)},stop:function(e,ui){if(ui.options._zIndex)$(ui.helper).css('zIndex',ui.options._zIndex)}});$.ui.plugin.add("draggable","opacity",{start:function(e,ui){var t=$(ui.helper);if(t.css("opacity"))ui.options._opacity=t.css("opacity");t.css('opacity',ui.options.opacity)},stop:function(e,ui){if(ui.options._opacity)$(ui.helper).css('opacity',ui.options._opacity)}});$.ui.plugin.add("draggable","iframeFix",{start:function(e,ui){$(ui.options.iframeFix===true?"iframe":ui.options.iframeFix).each(function(){$('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>').css({width:this.offsetWidth+"px",height:this.offsetHeight+"px",position:"absolute",opacity:"0.001",zIndex:1000}).css($(this).offset()).appendTo("body")})},stop:function(e,ui){$("div.ui-draggable-iframeFix").each(function(){this.parentNode.removeChild(this)})}});$.ui.plugin.add("draggable","scroll",{start:function(e,ui){var o=ui.options;var i=$(this).data("draggable");o.scrollSensitivity=o.scrollSensitivity||20;o.scrollSpeed=o.scrollSpeed||20;i.overflowY=function(el){do{if(/auto|scroll/.test(el.css('overflow'))||(/auto|scroll/).test(el.css('overflow-y')))return el;el=el.parent()}while(el[0].parentNode);return $(document)}(this);i.overflowX=function(el){do{if(/auto|scroll/.test(el.css('overflow'))||(/auto|scroll/).test(el.css('overflow-x')))return el;el=el.parent()}while(el[0].parentNode);return $(document)}(this);if(i.overflowY[0]!=document&&i.overflowY[0].tagName!='HTML')i.overflowYOffset=i.overflowY.offset();if(i.overflowX[0]!=document&&i.overflowX[0].tagName!='HTML')i.overflowXOffset=i.overflowX.offset()},drag:function(e,ui){var o=ui.options,scrolled=false;var i=$(this).data("draggable");if(i.overflowY[0]!=document&&i.overflowY[0].tagName!='HTML'){if((i.overflowYOffset.top+i.overflowY[0].offsetHeight)-e.pageY<o.scrollSensitivity)i.overflowY[0].scrollTop=scrolled=i.overflowY[0].scrollTop+o.scrollSpeed;if(e.pageY-i.overflowYOffset.top<o.scrollSensitivity)i.overflowY[0].scrollTop=scrolled=i.overflowY[0].scrollTop-o.scrollSpeed}else{if(e.pageY-$(document).scrollTop()<o.scrollSensitivity)scrolled=$(document).scrollTop($(document).scrollTop()-o.scrollSpeed);if($(window).height()-(e.pageY-$(document).scrollTop())<o.scrollSensitivity)scrolled=$(document).scrollTop($(document).scrollTop()+o.scrollSpeed)}if(i.overflowX[0]!=document&&i.overflowX[0].tagName!='HTML'){if((i.overflowXOffset.left+i.overflowX[0].offsetWidth)-e.pageX<o.scrollSensitivity)i.overflowX[0].scrollLeft=scrolled=i.overflowX[0].scrollLeft+o.scrollSpeed;if(e.pageX-i.overflowXOffset.left<o.scrollSensitivity)i.overflowX[0].scrollLeft=scrolled=i.overflowX[0].scrollLeft-o.scrollSpeed}else{if(e.pageX-$(document).scrollLeft()<o.scrollSensitivity)scrolled=$(document).scrollLeft($(document).scrollLeft()-o.scrollSpeed);if($(window).width()-(e.pageX-$(document).scrollLeft())<o.scrollSensitivity)scrolled=$(document).scrollLeft($(document).scrollLeft()+o.scrollSpeed)}if(scrolled!==false)$.ui.ddmanager.prepareOffsets(i,e)}});$.ui.plugin.add("draggable","snap",{start:function(e,ui){var inst=$(this).data("draggable");inst.snapElements=[];$(ui.options.snap.constructor!=String?(ui.options.snap.items||':data(draggable)'):ui.options.snap).each(function(){var $t=$(this);var $o=$t.offset();if(this!=inst.element[0])inst.snapElements.push({item:this,width:$t.outerWidth(),height:$t.outerHeight(),top:$o.top,left:$o.left})})},drag:function(e,ui){var inst=$(this).data("draggable");var d=ui.options.snapTolerance||20;var x1=ui.absolutePosition.left,x2=x1+inst.helperProportions.width,y1=ui.absolutePosition.top,y2=y1+inst.helperProportions.height;for(var i=inst.snapElements.length-1;i>=0;i--){var 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diff --git a/data/static/js/jquery-ui.packed.js b/data/static/js/jquery-ui.packed.js
deleted file mode 100644
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diff --git a/data/static/js/jquery.min.js b/data/static/js/jquery.min.js
deleted file mode 100644
--- a/data/static/js/jquery.min.js
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * jQuery 1.2.6 - New Wave Javascript
- *
- * Copyright (c) 2008 John Resig (jquery.com)
- * Dual licensed under the MIT (MIT-LICENSE.txt)
- * and GPL (GPL-LICENSE.txt) licenses.
- *
- * $Date: 2008-05-24 14:22:17 -0400 (Sat, 24 May 2008) $
- * $Rev: 5685 $
- */
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this.options.curAnim)if(this.options.curAnim[i]!==true)done=false;if(done){if(this.options.display!=null){this.elem.style.overflow=this.options.overflow;this.elem.style.display=this.options.display;if(jQuery.css(this.elem,"display")=="none")this.elem.style.display="block";}if(this.options.hide)this.elem.style.display="none";if(this.options.hide||this.options.show)for(var p in this.options.curAnim)jQuery.attr(this.elem.style,p,this.options.orig[p]);}if(done)this.options.complete.call(this.elem);return false;}else{var n=t-this.startTime;this.state=n/this.options.duration;this.pos=jQuery.easing[this.options.easing||(jQuery.easing.swing?"swing":"linear")](this.state,n,0,1,this.options.duration);this.now=this.start+((this.end-this.start)*this.pos);this.update();}return true;}};jQuery.extend(jQuery.fx,{speeds:{slow:600,fast:200,def:400},step:{scrollLeft:function(fx){fx.elem.scrollLeft=fx.now;},scrollTop:function(fx){fx.elem.scrollTop=fx.now;},opacity:function(fx){jQuery.attr(fx.elem.style,"opacity",fx.now);},_default:function(fx){fx.elem.style[fx.prop]=fx.now+fx.unit;}}});jQuery.fn.offset=function(){var left=0,top=0,elem=this[0],results;if(elem)with(jQuery.browser){var parent=elem.parentNode,offsetChild=elem,offsetParent=elem.offsetParent,doc=elem.ownerDocument,safari2=safari&&parseInt(version)<522&&!/adobeair/i.test(userAgent),css=jQuery.curCSS,fixed=css(elem,"position")=="fixed";if(elem.getBoundingClientRect){var box=elem.getBoundingClientRect();add(box.left+Math.max(doc.documentElement.scrollLeft,doc.body.scrollLeft),box.top+Math.max(doc.documentElement.scrollTop,doc.body.scrollTop));add(-doc.documentElement.clientLeft,-doc.documentElement.clientTop);}else{add(elem.offsetLeft,elem.offsetTop);while(offsetParent){add(offsetParent.offsetLeft,offsetParent.offsetTop);if(mozilla&&!/^t(able|d|h)$/i.test(offsetParent.tagName)||safari&&!safari2)border(offsetParent);if(!fixed&&css(offsetParent,"position")=="fixed")fixed=true;offsetChild=/^body$/i.test(offsetParent.tagName)?offsetChild:offsetParent;offsetParent=offsetParent.offsetParent;}while(parent&&parent.tagName&&!/^body|html$/i.test(parent.tagName)){if(!/^inline|table.*$/i.test(css(parent,"display")))add(-parent.scrollLeft,-parent.scrollTop);if(mozilla&&css(parent,"overflow")!="visible")border(parent);parent=parent.parentNode;}if((safari2&&(fixed||css(offsetChild,"position")=="absolute"))||(mozilla&&css(offsetChild,"position")!="absolute"))add(-doc.body.offsetLeft,-doc.body.offsetTop);if(fixed)add(Math.max(doc.documentElement.scrollLeft,doc.body.scrollLeft),Math.max(doc.documentElement.scrollTop,doc.body.scrollTop));}results={top:top,left:left};}function border(elem){add(jQuery.curCSS(elem,"borderLeftWidth",true),jQuery.curCSS(elem,"borderTopWidth",true));}function add(l,t){left+=parseInt(l,10)||0;top+=parseInt(t,10)||0;}return results;};jQuery.fn.extend({position:function(){var left=0,top=0,results;if(this[0]){var offsetParent=this.offsetParent(),offset=this.offset(),parentOffset=/^body|html$/i.test(offsetParent[0].tagName)?{top:0,left:0}:offsetParent.offset();offset.top-=num(this,'marginTop');offset.left-=num(this,'marginLeft');parentOffset.top+=num(offsetParent,'borderTopWidth');parentOffset.left+=num(offsetParent,'borderLeftWidth');results={top:offset.top-parentOffset.top,left:offset.left-parentOffset.left};}return results;},offsetParent:function(){var offsetParent=this[0].offsetParent;while(offsetParent&&(!/^body|html$/i.test(offsetParent.tagName)&&jQuery.css(offsetParent,'position')=='static'))offsetParent=offsetParent.offsetParent;return jQuery(offsetParent);}});jQuery.each(['Left','Top'],function(i,name){var method='scroll'+name;jQuery.fn[method]=function(val){if(!this[0])return;return val!=undefined?this.each(function(){this==window||this==document?window.scrollTo(!i?val:jQuery(window).scrollLeft(),i?val:jQuery(window).scrollTop()):this[method]=val;}):this[0]==window||this[0]==document?self[i?'pageYOffset':'pageXOffset']||jQuery.boxModel&&document.documentElement[method]||document.body[method]:this[0][method];};});jQuery.each(["Height","Width"],function(i,name){var tl=i?"Left":"Top",br=i?"Right":"Bottom";jQuery.fn["inner"+name]=function(){return this[name.toLowerCase()]()+num(this,"padding"+tl)+num(this,"padding"+br);};jQuery.fn["outer"+name]=function(margin){return this["inner"+name]()+num(this,"border"+tl+"Width")+num(this,"border"+br+"Width")+(margin?num(this,"margin"+tl)+num(this,"margin"+br):0);};});})();
diff --git a/data/static/js/search.js b/data/static/js/search.js
--- a/data/static/js/search.js
+++ b/data/static/js/search.js
@@ -1,8 +1,21 @@
 jQuery.fn.highlightPattern = function (patt, className)
 {
+    // check if patt starts or ends with non-word character
+    // and set regex boundary accordingly.
+    var start = '\\b(';
+    var end = ')\\b';
+    if (/\W/.test(patt.charAt(0))) {
+       var start = '\(?=\\W\)(';
+    };
+    if (/\W/.test(patt.charAt(patt.length - 1))) {
+       var end = ')\(?!\\w\)';
+    }
+    // escape regex metacharacters that may be in the patt
+    var epatt = patt.replace(/([.*+?^=!:${}()|\[\]\/\\])/g, "\\$1")
+
     // patt is a space separated list of strings - we want to highlight
     // an occurrence of any of these strings as a separate word.
-    var regex = new RegExp('\\b(' + patt.replace(/ /g, '|') + ')\\b', 'gi');
+    var regex = new RegExp(start + epatt.replace(/ /g, '| ') + end, 'gi');
 
     return this.each(function ()
     {
diff --git a/gitit.cabal b/gitit.cabal
--- a/gitit.cabal
+++ b/gitit.cabal
@@ -1,5 +1,5 @@
 name:                gitit
-version:             0.10.4
+version:             0.10.5
 Cabal-version:       >= 1.6
 build-type:          Simple
 synopsis:            Wiki using happstack, git or darcs, and pandoc.
@@ -48,8 +48,8 @@
                      data/static/css/custom.css,
                      data/static/img/logo.png, data/static/img/icons/feed.png,
                      data/static/img/icons/folder.png, data/static/img/icons/page.png,
-                     data/static/js/dragdiff.js, data/static/js/jquery.min.js,
-                     data/static/js/uploadForm.js, data/static/js/jquery-ui.packed.js,
+                     data/static/js/dragdiff.js, data/static/js/jquery-1.2.6.min.js,
+                     data/static/js/uploadForm.js, data/static/js/jquery-ui-combined-1.6rc2.min.js,
                      data/static/js/jquery.hotkeys-0.7.9.min.js,
                      data/static/js/preview.js, data/static/js/search.js,
                      data/static/js/MathMLinHTML.js, data/static/js/footnotes.js,
@@ -97,6 +97,10 @@
   type:          git
   location:      git://github.com/jgm/gitit.git
 
+Flag network-uri
+  Description: Get Network.URI from the network-uri package
+  Default: True
+
 Flag plugins
   description:       Compile in support for plugins.  This will increase the size of
                      the executable and the memory it uses, so those who will not need
@@ -108,17 +112,19 @@
   exposed-modules:   Network.Gitit, Network.Gitit.ContentTransformer,
                      Network.Gitit.Types, Network.Gitit.Framework,
                      Network.Gitit.Initialize, Network.Gitit.Config,
-                     Network.Gitit.Layout, Network.Gitit.Authentication
+                     Network.Gitit.Layout, Network.Gitit.Authentication,
+                     Network.Gitit.Authentication.Github
   other-modules:     Network.Gitit.Cache, Network.Gitit.State,
                      Paths_gitit, Network.Gitit.Server, Network.Gitit.Export,
                      Network.Gitit.Util, Network.Gitit.Handlers,
                      Network.Gitit.Plugins, Network.Gitit.Rpxnow,
-                     Network.Gitit.Page, Network.Gitit.Feed
+                     Network.Gitit.Page, Network.Gitit.Feed,
+                     Network.Gitit.Compat.Except
   if flag(plugins)
     exposed-modules: Network.Gitit.Interface
     build-depends:   ghc, ghc-paths
     cpp-options:     -D_PLUGINS
-  build-depends:     base >= 3, pandoc >= 1.12.4 && < 1.13,
+  build-depends:     base >= 3, pandoc >= 1.12.4 && < 1.14,
                      pandoc-types >= 1.12.3 && < 1.13, filepath, safe
   extensions:        CPP
   if impl(ghc >= 6.12)
@@ -135,7 +141,7 @@
                      pretty,
                      xhtml,
                      containers,
-                     pandoc >= 1.12.4 && < 1.13,
+                     pandoc >= 1.12.4 && < 1.14,
                      pandoc-types >= 1.12.3 && < 1.13,
                      process,
                      filepath,
@@ -146,7 +152,6 @@
                      bytestring,
                      text,
                      random,
-                     network >= 2.3 && < 2.6,
                      utf8-string >= 0.3 && < 0.4,
                      SHA > 1 && < 1.7,
                      HTTP >= 4000.0 && < 4000.3,
@@ -168,9 +173,17 @@
                      blaze-html >= 0.4 && < 0.8,
                      json >= 0.4 && < 0.8,
                      uri >= 0.1 && < 0.2,
-                     split
+                     split,
+                     hoauth2 >= 0.4.1 && < 0.5,
+                     http-client >= 0.3.5 && < 0.4,
+                     http-client-tls >= 0.2.2 && < 0.3,
+                     aeson >= 0.7 && < 0.9
   if impl(ghc >= 6.10)
     build-depends:   base >= 4, syb
+  if flag(network-uri)
+    build-depends:   network-uri >= 2.6 && < 2.7, network >= 2.6
+  else
+    build-depends:   network >= 2 && < 2.6
   if flag(plugins)
     build-depends:   ghc, ghc-paths
     cpp-options:     -D_PLUGINS
diff --git a/gitit.hs b/gitit.hs
--- a/gitit.hs
+++ b/gitit.hs
@@ -24,7 +24,7 @@
 import Network.Gitit.Util (readFileUTF8)
 import System.Directory
 import Data.Maybe (isNothing)
-import Control.Monad.Error()
+import Network.Gitit.Compat.Except()
 import Control.Monad.Reader
 import System.Log.Logger (Priority(..), setLevel, setHandlers,
         getLogger, saveGlobalLogger)
@@ -58,8 +58,7 @@
     Right xs -> return xs
 
   conf' <- case [f | ConfigFile f <- opts] of
-                (x:_) -> getConfigFromFile x
-                []    -> getDefaultConfig
+                fs -> getConfigFromFiles fs
 
   let conf = foldl handleFlag conf' opts
 
diff --git a/plugins/Subst.hs b/plugins/Subst.hs
--- a/plugins/Subst.hs
+++ b/plugins/Subst.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE PackageImports #-}
+
 -- Usage:  a paragraph containing just [My page](!subst)
 -- will be replaced by the contents of My page.
 --
@@ -6,7 +8,7 @@
 
 module Subst (plugin) where
 
-import Control.Monad.CatchIO (try)
+import "MonadCatchIO-mtl" Control.Monad.CatchIO (try)
 import Data.FileStore (FileStoreError, retrieve)
 import Text.Pandoc (def, readMarkdown)
 import Network.Gitit.ContentTransformer (inlinesToString)