Fix >& csh-ism
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@ -552,7 +552,7 @@ AC_SUBST(BACKSLASH_C)
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AC_PROG_LEX
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if test "$LEX" = "flex"; then
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$LEX --version 2> /dev/null | grep -s '2\.5\.3' >& /dev/null
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$LEX --version 2> /dev/null | grep -s '2\.5\.3' > /dev/null 2>&1
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if test $? -eq 0 ; then
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AC_MSG_WARN([
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***
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