Show source for changed or deleted cells

[roblourens]

• Open a notebook with two cells. The first defines a function, the second calls it
• Execute the first cell, then delete it
• Set a breakpoint in the second cell
• Step in to the function defined in the deleted cell

You get an error message saying that a tmp path isn't available. You should get an editor with the source of the deleted cell

[greazer]

Jupyter Lab actually displays the code that's being debugged. We should consider doing something similar.

[roblourens]

It's hard to fix this, with the way debugging works with the "run and debug" command. We would need to dump a cell every time a cell is executed, just in case you will start debugging soon.

[DonJayamanne]

Closing this issue as not planned, users haven't reported issues similar to this nor have there been any upvotes