Give *.penta plugins their own JS sandboxen.

--HG--
branch : key-processing

common/modules/base.jsm

@@ -1214,6 +1214,15 @@ update(iter, {
             func.call(self, val);
     },
 
+    indexOf: function indexOf(iter, elem) {
+        let i = 0;
+        for (let item in iter) {
+            if (item == elem)
+                return i;
+            i++;
+        }
+    },
+
     /**
      * Returns the array that results from applying *func* to each property of
      * *obj*.

common/modules/io.jsm

@@ -185,8 +185,10 @@ var IO = Module("io", {
                     else if (/\.css$/.test(filename))
                         styles.registerSheet(uri.spec, false, true);
                     else {
+                        if (!(file.path in plugins))
+                            plugins[file.path] = modules.newContext(modules.userContext);
                         modules.commands.execute(file.read(), null, silent || "loud", null,
-                            { file: file.path, line: 1 });
+                            { file: file.path, line: 1, context: plugins[file.path] });
                     }
 
                     if (this._scriptNames.indexOf(file.path) == -1)

common/modules/javascript.jsm

@@ -478,7 +478,7 @@ var JavaScript = Module("javascript", {
                 if (obj.length) {
                     let func = obj[0][0][funcName];
                     if (callable(func)) {
-                        let [, prefix, args] = /^(function .*?)\((.*)?\)/.exec(Function.prototype.toString.call(func));
+                        let [, prefix, args] = /^(function .*?)\((.*?)\)/.exec(Function.prototype.toString.call(func));
                         let n = this._get(i).comma.length;
                         args = template.map(Iterator(args.split(", ")),
                             function ([i, arg]) <span highlight={i == n ? "Filter" : ""}>{arg}</span>,