Re: Getting local variable debug info from within a nested function.

["Sherry Zhang" <yuleopen@...>]

On 6/9/07, Rici Lake <lua@ricilake.net> wrote:
> On 8-Jun-07, at 8:28 PM, Matthew Armstrong wrote:
>
> > So I've gone and written myself some debugging utility functions, but
> > am running into some trouble with the following:
> >
> > function outer(param)
> > return
> > function()
> > -- (do something with param)
> > debug.debug()
> > end
> > end
> >
> > outer(42)()
> >
> > So when I break at debug.debug, a search up the stack doesn't give me
> > any info about param. Any way to get this?
> >
>
> param is an upvalue; it's not on the stack at that point.
>
> (Plug:) You might want to take a look at the lua debugger
> (still alpha, but quite usable) at
> http://primero.ricilake.net:8008/ldb/index.html

Why does the official lua distribution still have the `debug' library?
I think it is ugly if lua has that library.  Most of the time we can
debug the scripts via some debugging tools.