Re: How do I get the filename and line number from a failed luaL_loadfile?

[Peter Odding <xolox@...>]

E. Wing wrote:
> I want to get the filename (with absolute path) and line number
> reported from luaL_loadfile. Is there a reliable way to get at this
> data?
>
> I have thought about parsing the error string returned on the stack,
> but I see two problems with this. First, I don't consider parsing a
> very reliable way of doing this. Second, I noticed that for long path
> names, the file/path name gets truncated so it isn't very useful for
> me even if I did successfully parse the string.
>
> My intention is to use the filename and line number returned to launch
> a text editor from my program at the location of the lua error to make
> fixing bugs much easier.

Sorry I can't help you with regards to luaL_loadfile(), however I 
/might/ have an alternate solution... My favorite text editor is Vim and 
it supports user-defined actions on events like saving a file. I've set 
up such an action that runs `luac -p ...` when I save a Lua script. If 
luac finds any parse errors in my script then Vim will show me a list of 
those errors and jump to the first one. I'm not suggesting you switch 
text editors but maybe your text editor can be scripted in a similar manner?

 - Peter Odding