Improving Lua error messages

Question

Whenever an error occurs in a Lua script, I'd like it to write the values of all local and global variables to the screen/optionally to a file - in addition to the usual stack trace.

How could I get this to be the default behavior for all errors?

Answer 1

If you're using the standard Lua interpreter, replace debug.traceback with your own function. If you're embedding Lua in your program, use your traceback function in lua_pcall.