Closed Bug 849773 Opened 11 years ago Closed 7 years ago

The tabs-module does not work properly with internationalized domain names (IDNs)


(Add-on SDK Graveyard :: General, defect, P2)



(Not tracked)



(Reporter: u463949, Unassigned)



User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0
Build ID: 20130307122351

Steps to reproduce:

1. Install the following add-on:


var tabs = require("sdk/tabs");

tabs.on("ready", function(tab){


2. Open the following IDN in the browser:


Actual results:

info: tabenum: http://E+'D.%.*('1/%D8%A7%D9%84%D8%B5%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D8%B1%D8%A6%D9%8A%D8%B3%D9%8A%D8%A9

Expected results:

tab.url returns "xn--mgbh0fb.xn--kgbechtv" for the host part of the url
Update, the url seems to work for me now.
I don't think it's strictly an SDK issue. If I copy & paste the link from the location bar to any text editor, that's the result:


That is also the exact value returned by `tab.url`:

    const tabs = require("sdk/tabs");{
       url: "http://xn--mgbh0fb.xn--kgbechtv",
       onReady: function(tab) {

Plus, it's still a valid URL, that point to the same URL:

    const tabs = require("sdk/tabs");{
       url: "http://xn--mgbh0fb.xn--kgbechtv",
       onReady: function(tab) {
; // same site

I believe that the string that is shown by the console depends by the file we use to dump on screen, due a problem on Windows. Probably this extra step just messed up the encoding, and that part could be maybe considered a bug in the SDK – and we could have a look – but for what is related to the url representation, that should be fixed on platform side – if it's a bug.
This kind of caught me by surprise, because it's inconsistent with every other Firefox interface I have worked with. Site permissions, cookies, local storage all use the punycode representation. The GUI will sometimes (not for all TLDs) convert this back to unicode, but I would have expected to be isolated from such matters. This transformation really seems more like something that concerns the presentation layer and not the "under the hood" parts.
Closed: 7 years ago
Resolution: --- → INCOMPLETE
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