determining line number

[Jeffrey Drake <wackysteak@...>]

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I would like to create a custom print function that reports directly to 
my gui, and one thing I would like is the line number of where it was 
called.

I am told what I am after is the equivalent to __LINE__ in C.

The idea is so the output might be something like this:

Message(myTest.lua: 45):   Task completed

or in more useful info:
Error(blah.lua:39): Expected list got string

I do not want to compromise speed if at all possible. Something that 
happens just while printing would be best.

- - Jeff


"Reportedly, he remarked to one of his Christian missionary friends: 
'What you teach us to do is admirable, but what you teach us to believe 
is foolish'."
- - Referring to King Mongkut of Siam
http://en.wikipedia.org/wiki/Mongkut
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