code: plan9front

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cal: fix -s 7

--- a/sys/src/cmd/cal.c

+++ b/sys/src/cmd/cal.c

@@ -54,6 +54,7 @@

 		wstart = atoi(EARGF(usage()));

 		if(wstart < 0 || wstart > 7)

 			usage();

+		wstart %= 7;

 		break;

 	default:

 		usage();