Function addfield

depends/lua/src/ltablib.c:160–166

static void addfield (lua_State *L, luaL_Buffer *b, lua_Integer i) {
  lua_geti(L, 1, i);
  if (!lua_isstring(L, -1))
    luaL_error(L, "invalid value (%s) at index %d in table for 'concat'",
                  luaL_typename(L, -1), i);
  luaL_addvalue(b);
}


static int tconcat (lua_State *L) {