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dired-do-copy not really cp -p

From: Dan Jacobson
Subject: dired-do-copy not really cp -p
Date: Tue, 08 Apr 2003 09:24:16 +0800
User-agent: Gnus/5.090008 (Oort Gnus v0.08) Emacs/21.2 (i386-pc-linux-gnu)

Gentlemen, I accuse the "[-p]" of  dired-do-copy's prompt,
   Copy [-p] * [4 files] to: /tmp/barf
of being a big fat lie!  Firstly, we all know that the real cp -p preservers
group and ownership.  However dired-do-copy doesn't. Try it as root
today. Secondly,
       dired-do-copy is an interactive compiled Lisp function in `dired-aux'.
       ...This normally preserves the last-modified date when copying.
OK, it only mentions dates.  If this is all it mentions, then in the
prompt don't go blabbing about -p unless you plan to really deliver the 

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