dnl CF_ALT_CHAR_SET version: 7 updated: 2010/10/23 15:54:49
dnl ---------------
dnl Check for existence of alternate-character-set support in curses, so we
dnl can decide to use it for box characters.
dnl
AC_DEFUN([CF_ALT_CHAR_SET],
[
AC_MSG_CHECKING([if curses supports alternate-character set])
AC_CACHE_VAL(cf_cv_alt_char_set,[
for mapname in acs_map _acs_map
do
	AC_TRY_LINK([
#include <${cf_cv_ncurses_header:-curses.h}>
	],[chtype x = $mapname['l']; $mapname['m'] = 0],
	[cf_cv_alt_char_set=$mapname
	 break],
	[cf_cv_alt_char_set=no])
done
	])
AC_MSG_RESULT($cf_cv_alt_char_set)
test $cf_cv_alt_char_set != no && AC_DEFINE_UNQUOTED(ALT_CHAR_SET,$cf_cv_alt_char_set)
])dnl
