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dnl -*- Autoconf -*-
AC_DEFUN([RUBY_APPEND_OPTION],
[# RUBY_APPEND_OPTION($1)
AS_CASE([" [$]{$1-} "],
[*" $2 "*], [], [' '], [ $1="$2"], [ $1="[$]$1 $2"])])dnl
AC_DEFUN([RUBY_PREPEND_OPTION],
[# RUBY_APPEND_OPTION($1)
AS_CASE([" [$]{$1-} "],
[*" $2 "*], [], [' '], [ $1="$2"], [ $1="$2 [$]$1"])])dnl
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