clean up cruft left in log by bug

Logs/UUIDBased.hs

@@ -63,6 +63,11 @@ parseLogWithUUID :: (UUID -> String -> Maybe a) -> String -> Log a
 parseLogWithUUID parser = M.fromListWith best . mapMaybe parse . lines
   where
 	parse line
+		-- This is a workaround for a bug that caused
+		-- NoUUID items to be stored in the log.
+		-- It can be removed at any time; is just here to clean
+		-- up logs where that happened temporarily.
+		| " " `isPrefixOf` line = Nothing
 		| null ws = Nothing
 		| otherwise = parser u (unwords info) >>= makepair
 	  where

doc/bugs/git_annex_describe_can_break_uuid.log.mdwn

@@ -40,8 +40,7 @@ $ git cat-file blob git-annex:uuid.log
 """]]
 
 > Fixed the bug and made git breakage not crash git-annex. [[done]]
-> 
-> You will probably end up with `git annex info` (used to be `git annex
-> status`) showing a strange display for "b". Just running "git annex dead
-> b" will clean that up. (You'd not want to do this if b is an active git
-> remote.) --[[Joey]] 
+> --[[Joey]] 
+
+> > Update: Also made it automatically clean up the cruft this put in the
+> > log. --[[Joey]]