Control over Lua execution

[John Price <jp_lua@...>]

I've embedded Lua into my application, but there are a few things I
would like to be able to do that I can't seem to figure out:

1. I'd like to be able to turn on a mode where I can list out each
line of Lua code as it is being executed (kinda like a trace mode).
In this mode I'm not too worried about speed.  Perhaps a callback from
Lua that gets called every time a new line gets executed?

2. I'd like to abort a Lua script while it is executing.  Right now
I'm using loadfile and pcall to execute a script.  Once those are
called, it doesn't return until the script is finished (or error).
I'd like to either prematurely abort that execution, or execute it
another way so that I can abort the script.

Thanks for any help.

jp

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