FR: Menu to select visible table columns when I right-click in the table header

[Quinn Taylor]

I frequently get annoyed that the only way to select which columns are visible 
is through a sub-menu of View. Please add the behavior like Mail has in the 
message viewer, where right-clicking in the table header displays a contextual 
menu that allows the user to (un)check a column. (I personally would leave out 
the "Sort By" sub-menu, since it's easier to just click on a table column 
anyway.)

I just added this for my own app, and it's trivial to do. Just call -setMenu: 
on -[NSTableView headerView] in your view controller. You might even be able to 
use the same NSMenu that lives under View > File Browser Columns.  :-)

Thanks,
  - Quinn       

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