Mercurial不存储备用数据流.此外，它们可能会在更新时被覆盖.

Mercurial does not store alternate data stream. Additionally, they are likely to be overwritten on update.

我不认为我知道的任何开源VCS都能处理这种事情(即使权限通常也不会处理).

I don't think any of the open source VCS I know handle that kind of thing (even permissions are usually not handled).