asterisk users - Jun 2006 - How to find out which line in extensions.conf?

When trying to figure out why something's not working, is there any way to
have the output specify which line of extensions.conf was being executed? 
I mean, sure, I could pour a million NoOp()'s into it, but that's not
exactly scalable, nor easy.  It would be really nice if, instead, along
with timestamp, it mentioned either a line number, or -- more likely -- a
context/extension/priority triplet.

Is there anything like that?

Thanks,

Ken D'Ambrosio