lua_len[-0, +1, e] void lua_len (lua_State *L, int index); Returns the length of the value at the given index. It is equivalent to the '#' operator in Lua (see §3.4.7) and may trigger a metamethod for the "length" event (see §2.4). The result is pushed on the stack.

lua_rawsetp[-1, +0, m] void lua_rawsetp (lua_State *L, int index, const void *p); Does the equivalent of t[p] = v, where t is the table at the given index, p is encoded as a light userdata, and v is the value at the top of the stack. This function pops the value from the stack. The assignment is raw, that is, it does not invoke __newindex metamethod.

luaL_Reg typedef struct luaL_Reg { const char *name; lua_CFunction func; } luaL_Reg; Type for arrays of functions to be registered by luaL_setfuncs. name is the function name and func is a pointer to the function. Any array of luaL_Reg must end with a sentinel entry in which both name and func are NULL.

table.concat (list [, sep [, i [, j]]]) Given a list where all elements are strings or numbers, returns the string list[i]..sep..list[i+1] ··· sep..list[j]. The default value for sep is the empty string, the default for i is 1, and the default for j is #list. If i is greater than j, returns the empty string.

lua_pushliteral[-0, +1, m] const char *lua_pushliteral (lua_State *L, const char *s); This macro is equivalent to lua_pushstring, but should be used only when s is a literal string.

luaL_newlib[-0, +1, m] void luaL_newlib (lua_State *L, const luaL_Reg l[]); Creates a new table and registers there the functions in list l. It is implemented as the following macro: (luaL_newlibtable(L,l), luaL_setfuncs(L,l,0)) The array l must be the actual array, not a pointer to it.

table.move (a1, f, e, t [,a2]) Moves elements from table a1 to table a2, performing the equivalent to the following multiple assignment: a2[t],··· = a1[f],···,a1[e]. The default for a2 is a1. The destination range can overlap with the source range. The number of elements to be moved must fit in a Lua integer. Returns the destination table a2.

debug.traceback ([thread,] [message [, level]]) If message is present but is neither a string nor nil, this function returns message without further processing. Otherwise, it returns a string with a traceback of the call stack. The optional message string is appended at the beginning of the traceback. An optional level number tells at which level to start the traceback (default is 1, the function calling traceback).

utf8.charpattern[\0-\x7F\xC2-\xF4][\x80-\xBF]*§6.4.1

utf8.char (···)