While the intent was good, saving column width/sort was unfortunately not handling the addition of new columns and old configs were losing columns. If this is restored, it should have some check on column with invalidation of config.
/*
** $Id: lundump.h,v 1.37.1.1 2007/12/27 13:02:25 roberto Exp $
** load precompiled Lua chunks
** See Copyright Notice in lua.h
*/
#ifndef lundump_h
#define lundump_h
#include "lobject.h"
#include "lzio.h"
/* load one chunk; from lundump.c */
LUAI_FUNC Proto* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff, const char* name);
/* make header; from lundump.c */
LUAI_FUNC void luaU_header (char* h);
/* dump one chunk; from ldump.c */
LUAI_FUNC int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip);
#ifdef luac_c
/* print one chunk; from print.c */
LUAI_FUNC void luaU_print (const Proto* f, int full);
#endif
/* for header of binary files -- this is Lua 5.1 */
#define LUAC_VERSION 0x51
/* for header of binary files -- this is the official format */
#define LUAC_FORMAT 0
/* size of header of binary files */
#define LUAC_HEADERSIZE 12
#endif