Стало удобнее пользоваться в контекстном меню, но надо нажать мышью 2 кнопки. Хотелось бы назначить эту функцию на какую то горячую кнопку на клавиатуре.

How about adding a keyboard short-cut?

Perfect, lightweight addon that does exactly what it says. Any chance you can add a shortcut key (for the "o" character to match the original menu item) like you did in close-tabs-right extension?

"About" says that this extension hasn't been tested with Tree Style Tabs - I have only just installed it, but I use TST, and wanted to report that, so far, it's working perfectly. I'm disappointed that an add-on is required to restore this feature, but grateful for the fix.