Re: Show mark in unread emails

[Manuel Carro <mcarro@fi.upm.es>]

> Yes, Wes Hardaker mentioned setting the display group parameter:
> 
>  "You can add a group parameter (G p) to either a group or a topic
>   such as this one:
> 
>     (display .
>             [and
>              (not killed)
>              (not expire)])
> 
>   Which will show everything not killed and not expired, for example."
> 
>    * http://article.gmane.org/gmane.emacs.gnus.general/80677
> 
> In this very thread, actually.
> 
> Couldn't you use that to have the messages you want to appear, appear?

I tried it.  If I edit (with "Gp") one of my groups and  add that as
parameter, after "C-cC-c" I get the following error messages:

gnus-group-get-parameter: Wrong type argument: listp, [and (not killed) (not expire)]
gnus-group-topic-parameters: Wrong type argument: listp, [and (not killed) (not expire)]

So I suppose that it's a list what is expected.  Therefore I changed it to

>     (display .
>             (and
>              (not killed)
>              (not expire)))

but then I enter the group and nothing happens (i.e., read messages are
still hidden).  If I go to the parameters (again "Gp") something
different appears: what I see  is

(display and
	 (not killed)
	 (not expire))

which obviously does not have the same meaning.  So, yes, I tried to
follow that path, but unsuccessfuly so far.  Any idea of why the
expression Wes Hardaker posted gives me an error message?

Best!