Re: debug.getinfo( aLevel, 'S' ).source?

[Petite Abeille <petite.abeille@...>]

On Aug 7, 2008, at 12:14 AM, Luiz Henrique de Figueiredo wrote:

> When combining several programs into one file, luac creates a hidden  
> main
> program that simply runs the given program. That hidden program in  
> given
> "=(luac)" as its source, in the absence of anything else that would  
> be useful.
> Like the other programs, the main program is precompiled and so  
> keeps its
> own notion of the source name. Changing the name of the file that  
> contains
> precompiled code does not affect the names stored in the files.

I see... so... compiling 'module.lua' into 'module.luac' will  
statically record '@module' as the source for that code in the luac  
file itself, right? From then on, debug.getinfo will always return  
'@module' as the source for that bytecode, irrespectively of the  
effective code provenance, correct?

In other words, if code is loaded from a lua file, one gets its  
location, if loaded from a luac file ones  get the static information  
recorded at the time of compilation, irrespectively of where the luac  
bytecode was loaded from.

On the other hand... code coming from source or bytecode should be  
equivalent for all practical purpose, no? But, in the case of  
debug.getinfo at least, they seem to behave rather differently...  
hmmm...

> Are you proposing otherwise?

At this conjuncture, yes... I would argue that debug.getinfo( 'S' )  
should consistently return the effective source location of a piece of  
code, no matter if it's plain source or bytecode.

Just my 2¢ though.

Cheers,

PA.