*** value_semantic.cpp.orig	Sun Dec 19 14:50:39 2004
--- value_semantic.cpp	Sun Dec 19 14:27:42 2004
***************
*** 8,13 ****
--- 8,15 ----
  #include <boost/program_options/value_semantic.hpp>
  #include <boost/program_options/detail/convert.hpp>
  
+ #include <cctype>
+ 
  namespace boost { namespace program_options {
  
      using namespace std;