Request: "Are You Sure" Prompt for "Edit ToC"
 

This was my own fault. When I had all 643 books in my Calibre Library selected, I accidentally hit the "Edit ToC" button I'd added to my menu bar. Off the program went trying to open to ToC for all those books. Everything ground to a halt as it furiously churned away (I can't imagine it would have ever succeeded). It took me a bit to get to a point where I could reboot the machine to escape from that.

Just to head off future silliness on my, or others', part, would it be possible to add a prompt asking something like "Are You Sure" when that button is pressed with more than a reasonable number of books selected?

Wow! Thanks, Kovid.