Fix hints on Firefox 4.

common/content/dactyl.js

@@ -346,7 +346,7 @@ var Dactyl = Module("dactyl", XPCOM(Ci.nsISupportsWeakReference, ModuleBase), {
     echoerr: function echoerr(str, flags) {
         flags |= commandline.APPEND_TO_MESSAGES;
 
-        if (isinstance(str, ["Error", "Exception"]))
+        if (isinstance(str, ["Error", "Exception"]) || isinstance(str, [XPCWrappedNative_NoHelper]) && /^\[Exception/.test(str))
             dactyl.reportError(str);
         if (isObject(str) && "echoerr" in str)
             str = str.echoerr;

common/content/hints.js

@@ -506,7 +506,9 @@ var HintSession = Class("HintSession", CommandMode, {
      */
     removeHints: function _removeHints(timeout) {
         for (let { doc, start, end } in values(this.docs)) {
-            delete doc.dactylLabels;
+            // Goddamn stupid fucking Gecko 1.x security manager bullshit.
+            try { delete doc.dactylLabels; } catch (e) { doc.dactylLabels = undefined; }
+
             for (let elem in util.evaluateXPath("//*[@dactyl:highlight='hints']", doc))
                 elem.parentNode.removeChild(elem);
             for (let i in util.range(start, end + 1))

common/modules/base.jsm

@@ -37,6 +37,7 @@ if (!Object.create)
     };
 if (!Object.defineProperty)
     Object.defineProperty = function defineProperty(obj, prop, desc) {
+        try {
             let value = desc.value;
             if ("value" in desc)
                 if (desc.writable && !__lookupGetter__.call(obj, prop)
@@ -55,6 +56,10 @@ if (!Object.defineProperty)
                 objproto.__defineGetter__.call(obj, prop, desc.get);
             if ("set" in desc)
                 objproto.__defineSetter__.call(obj, prop, desc.set);
+        }
+        catch (e) {
+            throw e.stack ? e : Error(e);
+        }
     };
 if (!Object.defineProperties)
     Object.defineProperties = function defineProperties(obj, props) {
@@ -65,6 +70,7 @@ if (!Object.freeze)
     Object.freeze = function freeze(obj) {};
 if (!Object.getOwnPropertyDescriptor)
     Object.getOwnPropertyDescriptor = function getOwnPropertyDescriptor(obj, prop) {
+        try {
             if (!hasOwnProperty.call(obj, prop))
                 return undefined;
             let desc = {
@@ -82,9 +88,14 @@ if (!Object.getOwnPropertyDescriptor)
             if (set)
                 desc.set = set;
             return desc;
+        }
+        catch (e) {
+            throw e.stack ? e : Error(e);
+        }
     };
 if (!Object.getOwnPropertyNames)
     Object.getOwnPropertyNames = function getOwnPropertyNames(obj, _debugger) {
+        try {
             // This is an ugly and unfortunately necessary hack.
             if (hasOwnProperty.call(obj, "__iterator__")) {
                 var oldIter = obj.__iterator__;
@@ -96,6 +107,10 @@ if (!Object.getOwnPropertyNames)
                 res.push("__iterator__");
             }
             return res;
+        }
+        catch (e) {
+            throw e.stack ? e : Error(e);
+        }
     };
 if (!Object.getPrototypeOf)
     Object.getPrototypeOf = function getPrototypeOf(obj) obj.__proto__;
@@ -591,6 +606,7 @@ function memoize(obj, key, getter) {
         return obj;
     }
 
+    try {
         Object.defineProperty(obj, key, {
             configurable: true,
             enumerable: true,
@@ -603,6 +619,10 @@ function memoize(obj, key, getter) {
                 Class.replaceProperty(this.instance || this, key, val)
         });
     }
+    catch (e) {
+        obj[key] = getter.call(obj, key);
+    }
+}
 
 let sandbox = Cu.Sandbox(this);
 sandbox.__proto__ = this;