Ok, I’m exactly what you wrote about, but not only for the function jumps – for rest of the cases as well.
For example, when I click on the item in the Outline plugin sidebar, my cursor jumps to a new position (jumps some code). So, it would be very useful to have a keyboard shortcut, which would allow to jump the cursor back to it previous position. Many other scenarios might be involved as well.
Is it difficult to implement such feature?