lua_getupvalue[-0, +(0|1), –] const char *lua_getupvalue (lua_State *L, int funcindex, int n); Gets information

lua_isnil[-0, +0, –] int lua_isnil (lua_State *L, int index); Returns 1 if the value at the given index

luaL_Buffer typedef struct luaL_Buffer luaL_Buffer; Type for a string buffer. A string buffer allows C code to build

luaL_Stream typedef struct luaL_Stream { FILE *f; lua_CFunction closef; } luaL_Stream; The standard representation for file handles

type (v)nilnilnumberstringbooleantablefunctionthreaduserdata

string.format (formatstring, ···) Returns a formatted version of its variable number of arguments following the description given in its first argument (which must be a string)

lua_pcallk[-(nargs + 1), +(nresults|1), –] int lua_pcallk (lua_State *L, int nargs,

lua_geti[-0, +1, e] int lua_geti (lua_State *L, int index, lua_Integer i); Pushes onto the stack

lua_settable[-2, +0, e] void lua_settable (lua_State *L, int index); Does the equivalent to t[k]

luaL_newmetatable[-0, +1, m] int luaL_newmetatable (lua_State *L, const char *tname); If the registry