id summary reporter owner description type status milestone component version severity resolution keywords cc 1269 boost::to_upper does not handle strings with s-sharps. anonymous Pavol Droba "S sharp ß in upper case is written ""SS"". Uppercased ""weiße"" should be ""WEISSE"", not ""WEIßE"". boost::to_upper works on strings, and not on single characters like std::toupper(), so it can handle such transformation of s sharp. " Bugs closed To Be Determined string_algo Boost 1.34.1 Problem wontfix