Comment 1 for bug 1358559

After investigating a little further, I can see that this feature would be very easy to add.

All that would have to be done is this:

When someone double-clicks a tab, the program could (behind the scenes) uncheck any of these checked options from the view menu:

- View > Show Message Window
- View > Show Toolbar
- View > Show Sidebar

Upon this double-click, the program should take note of the state of these options before doing the un-checking.

Then, on the next double-click of a tab (any tab), it could then toggle back to the previous settings.