Convert a list of VimL objects to msgpack. Returned value is a |readfile()|-style list. When {type} contains "B", a |Blob| is returned instead. Example: call writefile(msgpackdump([{}]), 'fname.mpack', 'b') or, using a |Blob|: call writefile(msgpackdump([{}], 'B'), 'fname.mpack') This will write the single 0x80 byte to a fname.mpack file (dictionary with zero items is represented by 0x80 byte in messagepack). Limitations:

1. |Funcref|s cannot be dumped.
2. Containers that reference themselves cannot be dumped.
3. Dictionary keys are always dumped as STR strings.
4. Other strings and |Blob|s are always dumped as BIN strings.
5. Points 3. and 4. do not apply to |msgpack-special-dict|s.