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Currently the menu bar icon image, if set, appears in the middle of the menu bar. I would suggest that, if we keep it, we should set it either left (a la the Apple menu) or right aligned.
The reason for this change, other than aesthetic, is that both the icon and the title (setMenuBarTitle) can appear under the main menu items, making them unreadable.
(NB: I've used this once and thought it was very strange. It hearkens waay back to Mac OS X 10.0 public beta:
This is related to #1690.
Milestone: Someday. Labels: Theme, feature. What's next? A reviewer should examine this issue.
Is this even in cocoa?
Not that I could see.