Function writer

Source/Misc/lua/src/lua.c:13817–13821

static int writer (lua_State *L, const void* b, size_t size, void* B) {
(void)L;
luaL_addlstring((luaL_Buffer*) B, (const char *)b, size);
return 0;
}


static int str_dump (lua_State *L) {