intcmp(1): without <sysexits.h> fall back to ANSI C
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				@ -18,9 +18,9 @@
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#include <errno.h> /* errno */
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					#include <errno.h> /* errno */
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#include <stdio.h> /* fprintf(3), stderr */
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					#include <stdio.h> /* fprintf(3), stderr */
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#include <stdlib.h> /* strtol(3), size_t */
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					#include <stdlib.h> /* strtol(3), size_t, EXIT_FAILURE */
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#ifndef EX_USAGE
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					#ifndef EX_USAGE
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#	include <sysexits.h> /* EX_USAGE */
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					#	define EX_USAGE EXIT_FAILURE
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#endif
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					#endif
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#include <unistd.h> /* getopt(3), optind */
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					#include <unistd.h> /* getopt(3), optind */
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