Re: Tramp keep-time broken

[Lars Hansen <larsh@math.ku.dk>]

Kai Großjohann wrote:

>It depends on the tramp method that you are using.  There are inline
>methods (which transfer the file through the shell connection using
>base64 or uu encoding) and there are out-of-band methods (which
>invoke an external program such as rcp or scp or rsync to actually
>transfer the file).
>  
>
I am using methods pscp under Windows and scp under GNU/Linux. The time 
stamp is not preserved in any of the cases. Unless I read the code in 
tramp.el in a wrong way, time stamp is never preserved when copying 
across machines. It looks to me as a bug.

>Should Tramp barf if it is requested to keep the time but can't?
>  
>
Tramp actually gives a warning, I just did not see it since one have to 
look in the message buffer. When i call

(copy-file "~/tmp/junk" "/larsh@galois.math.ku.dk:tmp/keep" t t)
(copy-file "~/tmp/junk" "/larsh@galois.math.ku.dk:tmp/new" t nil)

I get

tramp: Warning: cannot preserve file time stamp with inline copying 
across machines
tramp: Writing tmp file using `pscp'...
tramp: Transferring file using `pscp'...done
Wrote /larsh@galois.math.ku.dk:/home/l/larsh/tmp/keep
tramp: Writing tmp file using `pscp'...
tramp: Transferring file using `pscp'...done
Wrote /larsh@galois.math.ku.dk:/home/l/larsh/tmp/new