Re: lua_settagmethod

[Roberto Ierusalimschy <roberto@...>]

> Rather than changing the LUA code I'd like to change _ALERT to map to
> my function instead. [...]

That is exactly what you have to do. There are no tags involved; just change
the value of _ALERT to be your function:

  lua_pushcfunction(myFunction);
  lua_setglobal("_ALERT");

(Remember that all function names are in fact regular global variables that
happen to contain function values.)

-- Roberto