Set opterr to zero to avoid duplicate warnings from getopt(3) for unknown

options.

bin/sh/cd.c

@@ -87,7 +87,7 @@ cdcmd(int argc, char **argv)
 	struct stat statb;
 	int ch, phys, print = 0;
 
-	optreset = 1; optind = 1; /* initialize getopt */
+	optreset = 1; optind = 1; opterr = 0; /* initialize getopt */
 	phys = 0;
 	while ((ch = getopt(argc, argv, "LP")) != -1) {
 		switch (ch) {
@@ -323,7 +323,7 @@ pwdcmd(int argc, char **argv)
 	char buf[PATH_MAX];
 	int ch, phys;
 
-	optreset = 1; optind = 1; /* initialize getopt */
+	optreset = 1; optind = 1; opterr = 0; /* initialize getopt */
 	phys = 0;
 	while ((ch = getopt(argc, argv, "LP")) != -1) {
 		switch (ch) {

bin/sh/eval.c

@@ -1007,6 +1007,7 @@ commandcmd(int argc, char **argv)
 	path = pathval();
 
 	optind = optreset = 1;
+	opterr = 0;
 	while ((ch = getopt(argc, argv, "p")) != -1) {
 		switch (ch) {
 		case 'p':

bin/sh/histedit.c

@@ -208,6 +208,7 @@ histcmd(int argc, char **argv)
 		error("missing history argument");
 
 	optreset = 1; optind = 1; /* initialize getopt */
+	opterr = 0;
 	while (not_fcnumber(argv[optind]) &&
 	      (ch = getopt(argc, argv, ":e:lnrs")) != -1)
 		switch ((char)ch) {

bin/sh/jobs.c

@@ -259,6 +259,7 @@ jobscmd(int argc, char *argv[])
 	int ch, sformat, lformat;
 
 	optind = optreset = 1;
+	opterr = 0;
 	sformat = lformat = 0;
 	while ((ch = getopt(argc, argv, "ls")) != -1) {
 		switch (ch) {

bin/sh/var.c

@@ -543,6 +543,7 @@ exportcmd(int argc, char **argv)
 
 	cmdname = argv[0];
 	optreset = optind = 1;
+	opterr = 0;
 	values = 0;
 	while ((ch = getopt(argc, argv, "p")) != -1) {
 		switch (ch) {