@debug_last_error(): interpret only frames from Base.stacktrace()

[cstjean]

Apologies if it's been suggested before, but because inspecting the stack of the last error is so useful, couldn't a macro like @debug_last_error() grab the last REPL command to hit an exception, then rerun it in the debugger, interpreting only those frames which are in Base.stacktrace()? I realize that this is non-trivial, but it would make execution fast enough in almost all cases...

[pfitzseb]

Similar idea to JuliaDebug/Infiltrator.jl#99 (comment). This seems pretty straightforward to implement, I think.