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

[Juanma Barranquero]

On Fri, Jan 13, 2012 at 14:01, Michael Albinus <michael.albinus@gmx.de> wrote:

> I wouldn't check for `system-type', there might be other systems which
> do not care filename cases (VMS?). I would let-bind `case-fold-search',
> derived from `read-file-name-completion-ignore-case'.

You're right that r-f-n-c-i-c should be used, but as for binding it,
that forces you to use a more expensive comparation. Perhaps this is
simpler:

 (defun file-name-compare (name1 name2 &optional dir)
   "..."
   (compare-strings (file-truename (expand-file-name name1 dir))
                    (file-truename (expand-file-name name2 dir))
                    nil nil
                    read-file-name-completion-ignore-case))

    Juanma