I’m using Ubiquity behind the scenes, so it’s optional for the user to use the command line. Since I don’t have them invoke it, or describe it in detail, it’s an easy step to skip.

The Troubleshoot link above detects if you’ve installed the MOBhat command feed. If not it displays an error and gives instructions. If Ubiquity had a <noscript> like mechanism, then I could detect if Ubiquity wasn’t installed earlier.

View the HTML source of the page, the technique might be useful on your command feed pages. If so just add a pageLoad command like this to your command feed:

function pageLoad_detectNoUbiquity(){
    var doc = Application.activeWindow.activeTab.document;
    var url = doc.location.href;
    var troubleshoot = "http://mobhat.restservice.org/welcome/troubleshoot";
    if (url == troubleshoot) {
        jQuery('.no-ubiquity', Application.activeWindow.activeTab.document).hide();
        jQuery('.ubiquity', Application.activeWindow.activeTab.document).show();
    }
}

I have been subscribing with auto-updating for most Ubiquity commands, but i wrote a really simple command copy-page-title-gist that I didn’t see updating very often, so I didn’t set it to auto-update. Later I added some description, but I couldn’t figure out how refresh the command.

I expected  it to be at  about:ubiquity > Your Commands and figured the feature wasn’t implemented yet.

I figured wrong! On the about:ubiquity page if you scroll way down there is Subscribed Feeds. From here you can see updates in green.