RE: [EXT] Re: Emacs 29 and Tramp and Remote Dired confusion

[Bill Benedetto]

Hello, Michael.

Sorry I wasn't clearer.

If I do like you said, copy from a remote to a local dired, it does retain the 
timestamp.
And if I copy from a remote to a different remote dired, the timestamp is still 
retained.

But if I copy within the same remote dired to a new name within that same 
remote dired, the timestamp changes.
(Like to make a backup copy of the original file.)

It used to keep the original timestamp in earlier emacs/tramps.

Thanks!

-Bill 

-----Original Message-----
From: Michael Albinus <michael.albinus@gmx.de> 
Sent: Friday, July 7, 2023 8:39 AM
To: Bill Benedetto <bbenedetto@goodyear.com>
Cc: help-gnu-emacs@gnu.org
Subject: [EXT] Re: Emacs 29 and Tramp and Remote Dired confusion

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Bill Benedetto <bbenedetto@goodyear.com> writes:

> Good day.

Hi Bill,

> I'm confused about what I'm seeing in Emacs 29.
>
> Heretofore, when I copied a file in a remote dired, it would keep the same 
> timestamp.
> AFAIK, that's always worked and always been the default.
>
> However, that is not the default in Emacs 29.
> When I copy a file, it copies it with the current timestamp instead of the 
> original.
>
> I'm an admin and do this stuff all day.
> This is a deal breaker for me.
>
> I've nosed around and didn't see anything in the NEWS about a change like 
> that.
> And I've tried to figure out what variable I need to (re)set to get the old 
> behavior back, but haven't found it yet.
>
> I'm using emacs 29.0.92 (but I saw the same result in the previous two 
> pretests).
>
> Can someone shed some light on this for me?

I cannot reproduce it here. Scenario, using a recent build of Emacs 29:

# ~/src/emacs-29/src/emacs ~/

;; There is a file ccc, which is from last year. Dired shows it like

--8<---------------cut here---------------start------------->8---
  -rw-rw-r--.  1 albinus albinus     173 Jun 22  2022 ccc
--8<---------------cut here---------------end--------------->8---

;; I type "C", and give as remote target "/ssh:anotherhost:/tmp"
;; It is copied to the remote host, where it didn't exist before.
;; Then I type "C-x C-f /ssh:anotherhost:/tmp", and I see there

--8<---------------cut here---------------start------------->8---
  -rw-rw-r--  1 albinus albinus    173 Jun 22  2022 ccc
--8<---------------cut here---------------end--------------->8---

Could you pls give me your recipe when it fails?

> Thanks!
>
> - Bill

Best regards, Michael.