This is a similar hack as shown in http://www.blowyouros.com/2009/01/firefox-to-thunderbird-rss-feed-one-click-subscribe/ but for Firefox 3.5

Thank you for sharing this with us.

i have tried the Michale Staib’s (previous post) method for Firefox 3 but it doesn’t work for me… When i click the RSS icon in the address bar an error window appears with this message:

“Firefox doesn’t know how to open this address, because the protocol (feed) isn’t associated with any programhael”

Any idea?

// For the benefit of applications that might know how to deal with more
// URLs than just feeds, send feed: URLs in the following format:
//
// http urls: replace scheme with feed, e.g.
// http://foo.com/index.rdf -> feed://foo.com/index.rdf
// other urls: prepend feed: scheme, e.g.
// https://foo.com/index.rdf -> feed:https://foo.com/index.rdf
var ios =
Cc["@mozilla.org/network/io-service;1"].
getService(Ci.nsIIOService);
var feedURI = ios.newURI(spec, null, null);
if (feedURI.schemeIs(“http”)) {
feedURI.scheme = “feed”;
spec = feedURI.spec;
}
else
spec = “feed:” + spec;

var ss =
Cc["@mozilla.org/browser/shell-service;1"].
getService(Ci.nsIShellService);
ss.openApplicationWithURI(clientApp, spec);
break;

And replace with…
case “client”:
var clientApp = prefs.getComplexValue(getPrefAppForType(feedType), Ci.nsILocalFile);
// next five lines are new
var feedhandlerArgs = safeGetCharPref(“browser.feeds.handlers.application.args”, Ci.nsIILocalFile);
var file = Cc["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
file.initWithPath(clientApp.persistentDescriptor);
var process = Cc["@mozilla.org/process/util;1"].createInstance(Components.interfaces.nsIProcess);
process.init(file);

// For the benefit of applications that might know how to deal with more
// URLs than just feeds, send feed: URLs in the following format:
//
// http urls: replace scheme with feed, e.g.
// http://foo.com/index.rdf -> feed://foo.com/index.rdf
// other urls: prepend feed: scheme, e.g.
// https://foo.com/index.rdf -> feed:https://foo.com/index.rdf
//var ios =
// Cc["@mozilla.org/network/io-service;1"].
// getService(Ci.nsIIOService);
//var feedURI = ios.newURI(spec, null, null);
//if (feedURI.schemeIs(“http”)) {
// feedURI.scheme = “feed”;
// spec = feedURI.spec;
//}
//else
spec = “feed:” + spec;
// next four lines are new
if (feedhandlerArgs)
var args = [feedhandlerArgs, spec];
else
var args = [spec];

//var ss =
// Cc["@mozilla.org/browser/shell-service;1"].
// getService(Ci.nsIShellService);
//ss.openApplicationWithURI(clientApp, spec);
process.run(false, args, args.length);
break;

It can probably be done much more robustly, but it seems to work for the stated purpose. Enjoy!

Thanks Kenneth