adding a non-packaged extension to mozilla-firefox

[Riccardo Vestrini <riccardov@sssup.it>]

I wonder which is the preferred way to add an extension to mozilla-firefox

going to www.mozilla.org, finding an extension and clicking on the 
"install" icon does not seem to work
(i tried reloading firefox, calling update-mozilla-firefox-chrome, 
searching for "firefox extension" on this list without good luck)

I would only like to install the single-window extension on my own 
computer ...


thank you in advance

--

                               Riccardo Vestrini
                              <riccardov@sssup.it>

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