This code was using (the no longer there in the 10.7 SDK) GetPortBounds() to be able to render into a CGContextRef.
It was also using the private _NSGetCarbonMenu to be able to install the menu handler (that augmented the rendering).
This is using NSAttributedString’s NSTextTableBlocks:
* Font is determined from current menu rather than hardcoded
* Fixed: Invalid font size on bundle-item popup
* Fixed: Both tab triggers and key equivalents can co exists on single menu item
* No relayout calculations are needed after menu update (this is done automatically by NSLayoutManager when using NSTextTables)
* Uses 10.5 compatible API
When the last tab is closed the window will be kept open if the
file browser is shown. It will close the existing document and
replace it with a scratch document.
