Re: Where are group parameters stored?

[lee <lee@yun.yagibdah.de>]

Tassilo Horn <tassilo@member.fsf.org> writes:

> lee <lee@yun.yagibdah.de> writes:
>
> Hi Lee,
>
>>> (setq gnus-parameters
>>>       `((,(rx (or "emacs" "gnus"))                ;; 1)
>>>          (gnus-button-emacs-level 10))
>>>
>>> 	(,(rx "nnimap+")                             ;; 2)
>>> 	 (gnus-use-scoring nil)
>>> 	 (gcc-self . t))
>>> 	(,(rx "nnimap+Uni:ml/")                      ;; 3)
>>> 	 (gcc-self . "nnimap+Uni:Sent"))
>>> 	(,(rx "nnimap+Fastmail:INBOX.mailinglists.") ;; 4)
>>> 	 (gcc-self . "nnimap+Fastmail:INBOX.Sent Items")
>>> 	 (gnus-use-scoring t))))
>>
>> What does the above do?
>
> 1) In all groups containing emacs or gnus in their name the buttonize
>    level is increased, so that strings in articles that match an emacs
>    variable or function name are buttonized.  Clicking on them then
>    shows the help buffer you'd also get with `C-h f the-function RET'.
>
> 2) In all groups containing "nnimap+" (i.e., all groups of any IMAP
>    server) the scoring is turned of and when I start a mail in such a
>    group, then my own message is put into this group as well.
>
> 3) In all groups containing "nnimap+Uni:ml/", which is the base below I
>    have folders for different mailinglists on my university account, I
>    set an explicit sent mail folder which overrides the gcc-self from
>    2).
>
> 4) Like 3) for another account.  Again, I override the gcc-self
>    "inherited" from 2) and also activate scoring for these mailinglists.
>
> Inheritance here means that the individual parameters are applied in
> sequence.  So if you order them from lax regexps to more specific
> regexps (for example based on the folder structure like I do), you can
> set parameters for a whole set of groups first and override them for
> some exceptional groups that are matched by stricted regexps later in
> the list.

Thank you very much for the thorough explanation!

How do you make groups inherit parameters that have been set previously?
What I don't understand in particular is what the comma (`,') in an
entry does ... I can see that (rx "something") matches strings like
"something" and "something good".  So is it the comma that activates the
inheritance?

Inheritance can be very useful to me because without it, I have a lot of
repetitive entries in my list of gnus-parameters.