* XPG4 specifies that the enhanced features are not available unless the
_XOPEN_SOURCE_EXTENDED test macro is defined by the application. Ncurses uses
this macro (incorrectly) to address a dependency upon wchar_t. The functions
* XPG4 specifies that the enhanced features are not available unless the
_XOPEN_SOURCE_EXTENDED test macro is defined by the application. Ncurses uses
this macro (incorrectly) to address a dependency upon wchar_t. The functions