Re: No support for direct copying of directories

[Michael Albinus]

Troy Hinckley <troyhinckley@gmail.com> writes:

Hi Troy,

> Copying files when both the source and destination are on the same
> remote host is fast because tramp does a direct copy in
> tramp-do-copy-or-rename-file-directly. However there is no such
> support when copying a directory. When copying directories on a remote
> host via dired it takes a very long time, A directory that takes 100ms
> to copy via remote shell takes tramp almost a full minute. It looks
> like there is only support for direct copying files, not directories.
> Why is that? It seems like an easy performance win, but I don’t know
> if there is more complexity to it.

There might be some edge cases where it is problematic, but we'll see it
only when reported by users. I gave it a try, and I have enhanced
tramp-sh-handle-copy-directory accordingly. It passes the checks in
tramp-tests.el, which is a good sign.

Would you like to test it? I've appended the patch, it applies on top of
Tramp 2.7.1.

> -Troy Hinckley

Best regards, Michael.

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