bug#10489: 24.0.92; dired-do-copy may create infinite directory hierarchy

[Michael Albinus]

Juanma Barranquero <lekktu@gmail.com> writes:

>>  (compare-strings (file-truename (expand-file-name name1 dir)) 0 nil
>>                   (file-truename (expand-file-name name2 dir)) 0 nil
>>                   read-file-name-completion-ignore-case))
>
> I think we should push for it to be added to Emacs, if only for the
> thrill of having a ChangeLog entry
>
> 2012-01-13  Michael Albinus <michael.albinus@gmx.de>
>           Juanma Barranquero  <lekktu@gmail.com>
>           Eli Zaretskii <eliz@gnu.org>
>
>       * files.el (file-name-compare): New function.
>
> i.e., three authors for a three-line function (plus header and comments) ;-)

Perfect reasoning, I'm for it :-)

Thinking about, `file-truename' would need some massage for the remote
case. Currently, it just expands symlinks. But it could also do some
normalization for the user and host name. For example:

(file-truename "/ssh:127.0.0.1:/path/to/symlink")
 => "/ssh:albinus@localhost:/extend/path/to/file"

But that's for Emacs 24.2, of course.

> Juanma

Best regards, Michael.