[NSE] Getting a backtrace?

[Ron <ron () skullsecurity net>]

Hello,

When trying to troubleshoot problems with my scripts, I often get errors 
such as this:
SCRIPT ENGINE: /usr/share/nmap/nselib/msrpc.lua:139: bad argument #1 to 
'char' (number expected, got nil)

The problem is, the error is happening inside a function that's being 
called from 100+ places. Is there some way to get more information when 
there's a failure (the most important being, the backtrace/call 
stack/whatever)?

Thanks!

Ron

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