Resume Script - Executing SQL in batch mode

I've found the ability to execute SQL scripts in Batch mode particularly useful when executing lengthy scripts.
If I leave my computer idle or if the script takes too long, the connection occasionally times out and the execution stops.

I would love the ability to resume a script from where it left off. I imagine it's not too difficult, since the last line of execution is probably already known. Is there any feature tracked for functionality like this?