shithub: libmujs

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Create variables as DontDelete and DontEnum.

This is only for variables declared with the 'var' keyword, function
declarations and function parameters. Assignment to an undefined variable still
creates a regular property on the global object.

--- a/jsrun.c

+++ b/jsrun.c

@@ -447,7 +447,7 @@

 static void js_decvar(js_State *J, const char *name, int idx)

 {

-	jsR_setproperty(J, J->E->variables, name, idx);

+	jsR_defproperty(J, J->E->variables, name, idx, JS_DONTENUM | JS_DONTDELETE);

 }

 static void js_getvar(js_State *J, const char *name)

@@ -485,7 +485,6 @@

 {

 	js_Environment *E = J->E;

 	do {

-		// TODO: does delete follow prototype chain?

 		js_Property *ref = jsV_getownproperty(J, E->variables, name);

 		if (ref) {

 			if (ref->atts & JS_DONTDELETE)