Merging partial windows / moving tabs between windows

[Zegnat]

I have not yet decided if I would want this as part of Window Merger or a separate extension.

After a long research session, I will often use Window Merger to unify my windows. Sometimes this means I first select tabs (e.g. all tabs of a specific domain) in a window, then move the selected tabs to a new window, just so I can merge this new window in a different existing one. I would safe myself some time and hassle if I could skip the creating of a new window.

Sadly Firefox by default only offers Move to Start, Move to End, and Move to New Window.

I imagine opening the context menu (ie. right click menu) on the tab strip with one or more tabs selected, and then having to option to "Merge into..." which will list all the known browser windows.

[Zegnat]

The latest release 0.6.0 includes a version of this idea as an experimental feature that must be enabled in the add-on preferences.