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dnl @synopsis AC_LATEX_CLASSES([<class1>,<class2>,...],<var>)
dnl
dnl Test if class1 exists and if not class2 and so and set $var to the
dnl right value
dnl
dnl AC_LATEX_CLASSES([allo,book,bnjour],book)
dnl should set $book="book"
dnl
dnl @category LaTeX
dnl @author Mathieu Boretti boretti@bss-network.com
dnl @version 2005-01-21
dnl @license GPLWithACException
define(_AC_LATEX_CLASSES_INTERNE,[
ifelse($#,1,[],$#,2,[
AC_LATEX_CLASS($2,$1)
],[
AC_LATEX_CLASS($2,$1)
if test "$$1" = "yes";
then
$1=$2 ; export $1 ;
else
_AC_LATEX_CLASSES_INTERNE($1,m4_shift(m4_shift($@)))
fi;
])
])
AC_DEFUN([AC_LATEX_CLASSES],[
_AC_LATEX_CLASSES_INTERNE($2,$1)
AC_SUBST($2)
])
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