Add unistd.h to make gcc -Wall happy.
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@ -42,6 +42,10 @@ PERFORMANCE OF THIS SOFTWARE.
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#include "mymath.h"
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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/* Forward */
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static object *filterstring PROTO((object *, object *));
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static object *filtertuple PROTO((object *, object *));
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