K 10 svn:author V 3 tjr K 8 svn:date V 27 2004-07-08T06:43:37.000000Z K 7 svn:log V 273 Add a function to iterate over all characters in a particular character class. This is necessary in order to implement tr(1) efficiently in multibyte locales, since the brute force method of finding all characters in a class is infeasible with a 32-bit (or wider) wchar_t. END