New feature: Right-click menu item "Open Link in New Private Tab" that reuses an existing private window
If I wish to view certain search results in a private manner, then a new window must be opened. It would be useful to have an "Open Link in New Private Tab" item so that an existing private window can be used. This would also seem more natural given there is only one private data context (i.e. cookies) shared among different private windows.
Alternatively, maybe this would be the default behavior if "Open links in tabs instead of new windows" is selected. The menu item label might change accordingly to something like "Open Link In Existing Private Window".
Alla svar (1)
Right now, I think you need an add-on for those things.
For background, Firefox has the general approach of maintaining two contexts: regular windows are one, and private windows are another. Each context has its own cookie jar. When the last private window is closed, that context is destroyed. This approach doesn't mix private tabs into regular windows and regular tabs into private windows.
Recently, Firefox introduced the concept of containers and container tabs. This lets you create many new contexts with their own cookie jars, for example, if you want to log into a site as two different users in different tabs. These container tabs can be in any regular windows (I don't think they would work in private windows, but I never played with it). Mozilla published an add-on to make it easier to work with containers: https://addons.mozilla.org/firefox/addon/multi-account-containers/
I suspect that future development will keep private windows as a more simplified concept and put fancier features into containers, but I certainly don't keep up with such things in detail.
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