use unistd
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@ -289,6 +289,9 @@ static char SccsId[] = "%W% %G%";
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#ifdef TABLING
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#ifdef TABLING
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#include "tab.macros.h"
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#include "tab.macros.h"
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#endif /* TABLING */
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#endif /* TABLING */
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <stdio.h>
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#include <stdio.h>
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#if HAVE_STRING_H
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#if HAVE_STRING_H
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#include <string.h>
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#include <string.h>
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