Re: rename-file

[martin rudalics <rudalics@gmx.at>]

 > Why isn't the buffer, which is visiting a file, renamed
 > when I rename the underlying file with rename-file?

Personally, I do the following when renaming a file or a directory:
First I do a `bookmark-set-filename' on every involved buffer.  Next I
do (the precise reasons I don't remember) for any BUFFER whose filename
is set to NEW

         (with-current-buffer buffer
           (let ((buffer-modified-p (buffer-modified-p)))
             ;; make buffer visit new
             (set-visited-file-name new nil t)
             (clear-visited-file-modtime)
             (set-buffer-modified-p buffer-modified-p)))))

`dired-rename-file' does something similar, but I never looked into
that.

Finally, I do a redisplay to assure that modelines and frame titles get
updated correctly.  When renaming directories I also set the default
directory, if necessary.

All these are sufficient for my personal needs and have not caused any
problems over the past five years.  But I'm afraid there's a number of
more hairy issues involved when a package has stored away some buffers'
names in a local list.

martin