>>>>> Lars Magne Ingebrigtsen writes:

 > Fredrik "Glöckner" <fredrik.glockner@bio.uio.no> writes:

 >> I would like a function that cleans some of my mail archive
 >> permanently, that is: It should remove (long) signatures, remove
 >> surplus quotations and so on to save disk space.  My mail archives are
 >> in nnml format, and some of the actual files are compressed.

 >> Have anybody got experience as to how such a function should look
 >> like?  Is there support in Gnus for doing such things?

 > There isn't any support for doing this, but it could be done from
 > Gnus.  In essence: go through all nnml groups, select all articles,
 > and for each article, run the required washing functions, delete the
 > invisible text and do an `nnml-request-replace-article'.

Hmm.  At least for some washing functions, this is fairly easy, due to 
what might actually be a bug.

Take this example:
	W q e C-c C-c
(This word-wraps the current message, edits it, and immediately exits
from editing.)

Even though you didn't make any changes while editing, the message
gets saved, and it's now word-wrapped forever.

I regularly take advantage of this feature (misfeature?).

--Paul