code: plan9front

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cal: use Sa/Su in all cases, also simplify the code

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

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

@@ -2,15 +2,9 @@

 #include <libc.h>

 #include <bio.h>

-char	*dayw[] =

+char	dayws[] =

 {

-	" S  M Tu  W Th  F  S",

-	" M Tu  W Th  F Sa Su",

-	"Tu  W Th  F Sa Su  M",

-	" W Th  F Sa Su  M Tu",

-	"Th  F Sa Su  M Tu  W",

-	" F Sa Su  M Tu  W Th",

-	"Sa Su  M Tu  W Th  F"

+	"Su  M Tu  W Th  F Sa Su  M Tu  W Th  F Sa",

 };

 char	*smon[] =

 {

@@ -48,6 +42,7 @@

 main(int argc, char *argv[])

 {

 	int y, i, j, m;

+	char *dayw;

 	ARGBEGIN{

 	case 's':

@@ -64,6 +59,9 @@

 		usage();

 	Binit(&bout, 1, OWRITE);

+	dayw = dayws + 3*wstart;

+	dayw[3*7] = '\0';

+

 /*

  * no arg, print current month

  */

@@ -108,7 +106,7 @@

 	if(y < 1 || y > 9999)

 		goto badarg;

 	Bprint(&bout, "   %s %ud\n", smon[m-1], y);

-	Bprint(&bout, "%s\n", dayw[wstart]);

+	Bprint(&bout, "%s\n", dayw);

 	cal(m, y, string, 24);

 	for(i=0; i<6*24; i+=24)

 		pstr(string+i, 24);

@@ -129,7 +127,7 @@

 		Bprint(&bout, "         %.3s", smon[i]);

 		Bprint(&bout, "                    %.3s", smon[i+1]);

 		Bprint(&bout, "                    %.3s\n", smon[i+2]);

-		Bprint(&bout, "%s   %s   %s\n", dayw[wstart], dayw[wstart], dayw[wstart]);

+		Bprint(&bout, "%s   %s   %s\n", dayw, dayw, dayw);

 		cal(i+1, y, string, 72);

 		cal(i+2, y, string+23, 72);

 		cal(i+3, y, string+46, 72);