Shougo

I will follow Bram's decision.

> I don't think we will want to add more than the basic functionality, just copying a file. Other functions, such as getftype() can be used to decide what to...

> That involves a race condition. In hindsight rename() should also have this behavior, but now it's too late to change. I can add the check in `filecopy()`. But it...

I have added `{flags}`.

Hm... I should remove the overwrite flag and it should fail if the dest exists. It is smarter.

I will rebase it if you needed.

> yeah, if you still think this is useful, let's update the PR and I'll have a closer look. I am also wondering whether we should call it copy() or...

The tests are passed.

Why the feature is needed?

Hm. It seems the feature request for FernDo.