--- a/shell/ash.c
+++ b/shell/ash.c
-@@ -11909,8 +11909,17 @@ exportcmd(int argc ATTRIBUTE_UNUSED, cha
+@@ -12532,8 +12532,17 @@ exportcmd(int argc UNUSED_PARAM, char **
const char *p;
char **aptr;
- int flag = argv[0][0] == 'r'? VREADONLY : VEXPORT;
+ int flag = argv[0][0] == 'r' ? VREADONLY : VEXPORT;
+ int mask = ~0;
+ int nopt;
+ while ((nopt = nextopt("np"))) {
aptr = argptr;
name = *aptr;
if (name) {
-@@ -11922,10 +11931,12 @@ exportcmd(int argc ATTRIBUTE_UNUSED, cha
+@@ -12545,10 +12554,12 @@ exportcmd(int argc UNUSED_PARAM, char **
vp = *findvar(hashvar(name), name);
if (vp) {
vp->flags |= flag;