Patching Lua to handle different code pages

[David Crayford <dcrayford@...>]

I have a requirement to patch the Lua core to handle different code 
pages. The code pages will mainly be EBCDIC but could be ASCII.
I've had a look at the code and it seems that I can hook  iconv() calls 
into luaL_loadfile, LuaL_loadbuffer and LuaL_loadstring in lauxlib.c, 
which should translate all the source code before it hits the lexer/parser.

Is there a better way of doing it?