I think what you really want is to replace a latin1 ü by a UTF-8 ü (byte sequence C3 BC).
Thomas STEININGER wrote on Fri, Feb 18, 2011 at 13:53:43 +0100: > i need a tip to solve my problem with log-messages in our > subversion-repository. (see the mail-conversation with the tortoisesvn > team below). > there are message that contain mutated vowel and i need to find all them > and correct them. > f.e. i want to replace 'übergabe' by 'uebergabe' or if this is to > difficult only by '_bergabe'. > > can anybode give me tips / commands to do that or probably there is an > tool (because the problem was already solved for another user)? > > thanks for help > -thomas