From a24d22cd0f1b10ace1c0c73d8aff991cec400de1 Mon Sep 17 00:00:00 2001
From: gorhill <rhill@raymondhill.net>
Date: Fri, 6 Feb 2015 12:20:30 -0500
Subject: [PATCH] this fixes #708

---
 src/js/assets.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/js/assets.js b/src/js/assets.js
index 733871842..41e75ab7b 100644
--- a/src/js/assets.js
+++ b/src/js/assets.js
@@ -820,6 +820,13 @@ var readExternalAsset = function(path, callback) {
 
     var onExternalFileLoaded = function() {
         this.onload = this.onerror = null;
+        // https://github.com/gorhill/uBlock/issues/708
+        // A successful download should never return an empty file: turn this
+        // into an error condition.
+        if ( stringIsNotEmpty(this.responseText) === false ) {
+            onExternalFileError();
+            return;
+        }
         //console.log('µBlock> readExternalAsset("%s") / onExternalFileLoaded1()', path);
         cachedAssetsManager.save(path, this.responseText);
         reportBack(this.responseText);