compile-time error line numbers

[Will Leshner <leshner@...>]

Excuse me if this is very basic, but I'm wondering if there is a way to 
get line number for errors that occur when Lua compiles a chunk. I'm 
doing luaL_loadbuffer() and I do get errors, but no line numbers. I'd 
like to be able to report back to the user exactly what line the error 
occurred on.

Thanks.