Re: dired-do-rename on "." and ".."

[Richard Stallman]

    That patch seems to be an improvement.  However, what is unfortunate
    with the recent changes, is that now many reasonable dired operations
    don't work anymore on ".", "..", like

    S runs the command dired-do-symlink
    H runs the command dired-do-hardlink
    M runs the command dired-do-chmod
    G runs the command dired-do-chgrp
    O runs the command dired-do-chown
    ! runs the command dired-do-shell-command

Perhaps the right thing to do is to change these specific commands to
allow operation on `.' and `..'.  A new argument to dired-get-marked-files
should make this pretty easy.