Issue 5860 - options page is broken in test enviroment

ext/common.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 67 matching lines @@
     }
   };
 
   /* I18n */
 
   let getLocaleCandidates = function(selectedLocale)
   {
     let candidates = [];
     let defaultLocale = "en_US";
 
-    // e.g. "ja_jp_mac" -> "ja_JP", note that the part after the second
+    // e.g. "ja-jp-mac" -> "ja_JP", note that the part after the second
     // dash is dropped, since we only support language and region
-    let parts = selectedLocale.split("_");

[Sebastian Noack, 2017/10/12 18:10:33]

This seems wrong. window.navigator.language still uses dashes. We merely need to
use underscores now when putting the language code back together.

[saroyanm, 2017/10/12 20:26:38]

Noted, done.

+    let parts = selectedLocale.split("-");
     let language = parts[0];
     let region = (parts[1] || "").toUpperCase();
 
     if (region)
       candidates.push(language + "_" + region);
 
     candidates.push(language);
 
     if (candidates.indexOf(defaultLocale) == -1)
       candidates.push(defaultLocale);
 
     return candidates;
   };
 
   let selectedLocale = window.navigator.language;
-  let match = /[?&]locale=([\w_]+)/.exec(window.location.search);

[Sebastian Noack, 2017/10/12 18:10:33]

No need to change the semantics for the ?locale get parameter either.

[saroyanm, 2017/10/12 20:26:38]

Right, done.

+  let match = /[?&]locale=([\w-]+)/.exec(window.location.search);
   if (match)
     selectedLocale = match[1];
 
   let locales = getLocaleCandidates(selectedLocale);
   let catalog = Object.create(null);
   let catalogFile = window.location.pathname.replace(/.*\//, "")
     .replace(/\..*/, "") + ".json";
 
   let replacePlaceholder = function(text, placeholder, content)
   {
@@ skipping 40 matching lines @@
     for (let msgId in rawCatalog)
     {
       if (!(msgId in catalog))
         catalog[msgId] = parseMessage(rawCatalog[msgId]);
     }
   };
 
   chrome.i18n = {
     getUILanguage()
     {
-      return locales[0];

[Sebastian Noack, 2017/10/12 18:10:33]

It seems the replacement here, has been redundant before, but is necessary now,
hence this line shouldn't be changed.

chrome.i18n.getUILanguage() returns the language code with dashes. Before we
internally used dashes, hence didn't need this replacement. Now, since we
internally use underscores, the replacement is actually necessary.

[saroyanm, 2017/10/12 20:26:38]

Well spotted, done.

+      return locales[0].replace(/_/g, "-");
     },
     getMessage(msgId, substitutions)
     {
       while (true)
       {
         let message = catalog[msgId];
         if (message)
         {
           let text = message[0];
           let placeholders = message[1];
@@ skipping 10 matching lines @@
         if (locales.length == 0)
           return "";
 
         let locale = locales.shift();
         readCatalog(locale, "common.json");
         readCatalog(locale, catalogFile);
       }
     }
   };
 }());