copyright-update in nnfolder [was Re: Emacs 23.2.94 pretest]

[Glenn Morris]

Chong Yidong wrote:

> *** lisp/gnus/nnfolder.el     2011-01-02 23:50:46 +0000
> --- lisp/gnus/nnfolder.el     2011-02-15 15:47:59 +0000
[...]
> !       (set (make-local-variable 'copyright-update) nil)

I think it would be better for nnfolder just not to do this at all.
First, how many mail folders happen to contain copyright headers at
the start?
Second, people should be more selective about enabling features on
buffer-save. It's not the responsibility of every package that saves a
buffer to disable every feature (trailing whitespace removal, etc) that
people might have added to save hooks.