Currently, all of the keyword values inside files are case-sensitive, but only the long forms are case-sensitive when added to svn:keywords. Since we cannot change the behavior of existing svn:keywords, it was decided to canonicalize future svn:keywords values. See this thread for the discussion: http://svn.haxx.se/dev/archive-2005-02/0172.shtml and specifically see the suggested bite-size task here: http://svn.haxx.se/dev/archive-2005-02/0217.shtml Be sure to run the test suite and if necessary, correct any tests which may depend on the wrong values. Please include a patch to the documentation which describes that keywords are case-sensitive in the file (which is currently not specified) as well as that you can use any of the available aliases in svn:keywords and they will be normalized to the long form when added.
Original issue reported by jpeacock