LUA Scoping Semantics

[mtp1032]

Hello,

I'm a very new to LUA programming (2 full days), tho' I do have an extensive background in C/C++ and Java. Alas, I have run into what appears to be a scoping problem and I'm confused. Here's the problem:

in mylib.lua I have the function definition

function parseStackTrace()
<lines of code>
end

And in my testing framework, myLibTests.lua, I have

function runTests()
    local result1, result2, result3 = parseStackTrace( debugstack())
end

When executed, the test fails with the following error message:

attempt to call global 'parseStackTrace' (a nil value)

(ASIDE: I'm using !Swatter)

my .toc file contains these lines

<boiler plate> myLib.lua myLibTests.lua

It's clear I'm missing something important and probably familiar to most LUA programmers. So, can someone either explain what's going on or point me to the appropriate documentation?

Cheers,