I change my previous review, now seem working properly but I installed various times and now everything works as expected, I never changed nothing or installed other addons, it's stopped working alone, but now works again.

Ottima estensione per tradurre, per ora la migliore che ho trovato per firefox. Ha molte possibilità di personalizzazione

With recent versions, when I copy multi line code text from github (e.g. https://github.com/jsfaint/gen_tags.vim/blob/master/plugin/gen_tags.vim), this add-on will add tab to every line except the first. Could you fix it?