Group Parameters ================ The group parameters store information local to a particular group. Here's an example group parameter list: ((to-address . "firstname.lastname@example.org") (auto-expire . t)) We see that each element consists of a "dotted pair"--the thing before the dot is the key, while the thing after the dot is the value. All the parameters have this form _except_ local variable specs, which are not dotted pairs, but proper lists. The following group parameters can be used: `to-address' Address used by when doing followups and new posts. (to-address . "email@example.com") This is primarily useful in mail groups that represent closed mailing lists--mailing lists where it's expected that everybody that writes to the mailing list is subscribed to it. Since using this parameter ensures that the mail only goes to the mailing list itself, it means that members won't receive two copies of your followups. Using `to-address' will actually work whether the group is foreign or not. Let's say there's a group on the server that is called `fa.4ad-l'. This is a real newsgroup, but the server has gotten the articles from a mail-to-news gateway. Posting directly to this group is therefore impossible--you have to send mail to the mailing list address instead. Some parameters have corresponding customizable variables, each of which is an alist of regexps and values. `to-list' Address used when doing `a' in that group. (to-list . "firstname.lastname@example.org") It is totally ignored when doing a followup--except that if it is present in a news group, you'll get mail group semantics when doing `f'. If you do an `a' command in a mail group and you have neither a `to-list' group parameter nor a `to-address' group parameter, then a `to-list' group parameter will be added automatically upon sending the message if `gnus-add-to-list' is set to `t'. If you do an `a' command in a mail group and you don't have a `to-list' group parameter, one will be added automatically upon sending the message. See also `gnus-parameter-to-list-alist'. `visible' If the group parameter list has the element `(visible . t)', that group will always be visible in the Group buffer, regardless of whether it has any unread articles. `broken-reply-to' Elements like `(broken-reply-to . t)' signals that `Reply-To' headers in this group are to be ignored. This can be useful if you're reading a mailing list group where the listserv has inserted `Reply-To' headers that point back to the listserv itself. This is broken behavior. So there! `to-group' Elements like `(to-group . "some.group.name")' means that all posts in that group will be sent to `some.group.name'. `newsgroup' If you have `(newsgroup . t)' in the group parameter list, Gnus will treat all responses as if they were responses to news articles. This can be useful if you have a mail group that's really a mirror of a news group. `gcc-self' If `(gcc-self . t)' is present in the group parameter list, newly composed messages will be `Gcc''d to the current group. If `(gcc-self . none)' is present, no `Gcc:' header will be generated, if `(gcc-self . "string")' is present, this string will be inserted literally as a `gcc' header. This parameter takes precedence over any default `Gcc' rules as described later (Note: Archived Messages). `auto-expire' If the group parameter has an element that looks like `(auto-expire . t)', all articles read will be marked as expirable. For an alternative approach, Note: Expiring Mail. `total-expire' If the group parameter has an element that looks like `(total-expire . t)', all read articles will be put through the expiry process, even if they are not marked as expirable. Use with caution. Unread, ticked and dormant articles are not eligible for expiry. See also `gnus-total-expirable-newsgroups'. `expiry-wait' If the group parameter has an element that looks like `(expiry-wait . 10)', this value will override any `nnmail-expiry-wait' and `nnmail-expiry-wait-function' when expiring expirable messages. The value can either be a number of days (not necessarily an integer) or the symbols `never' or `immediate'. `score-file' Elements that look like `(score-file . "file")' will make `file' into the current score file for the group in question. All interactive score entries will be put into this file. `adapt-file' Elements that look like `(adapt-file . "file")' will make `file' into the current adaptive file for the group in question. All adaptive score entries will be put into this file. `admin-address' When unsubscribing from a mailing list you should never send the unsubscription notice to the mailing list itself. Instead, you'd send messages to the administrative address. This parameter allows you to put the admin address somewhere convenient. `display' Elements that look like `(display . MODE)' say which articles to display on entering the group. Valid values are: `all' Display all articles, both read and unread. `default' Display the default visible articles, which normally includes unread and ticked articles. `comment' Elements that look like `(comment . "This is a comment")' are arbitrary comments on the group. They are currently ignored by Gnus, but provide a place for you to store information on particular groups. `charset' Elements that look like `(charset . iso-8859-1)' will make `iso-8859-1' the default charset; that is, the charset that will be used for all articles that do not specify a charset. See also `gnus-group-charset-alist'. `ignored-charsets' Elements that look like `(ignored-charsets x-known iso-8859-1)' will make `iso-8859-1' and `x-unknown' ignored; that is, the default charset will be used for decoding articles. See also `gnus-group-ignored-charsets-alist'. `posting-style' You can store additional posting style information for this group only here (Note: Posting Styles). The format is that of an entry in the `gnus-posting-styles' alist, except that there's no regexp matching the group name (of course). Style elements in this group parameter will take precedence over the ones found in `gnus-posting-styles'. For instance, if you want a funky name and signature in this group only, instead of hacking `gnus-posting-styles', you could put something like this in the group parameters: (posting-style (name "Funky Name") (signature "Funky Signature")) `banner' An item like `(banner . "regex")' causes any part of an article that matches the regular expression "regex" to be stripped. Instead of "regex", you can also use the symbol `signature' which strips the last signature or any of the elements of the alist `gnus-article-banner-alist'. `(VARIABLE FORM)' You can use the group parameters to set variables local to the group you are entering. If you want to turn threading off in `news.answers', you could put `(gnus-show-threads nil)' in the group parameters of that group. `gnus-show-threads' will be made into a local variable in the summary buffer you enter, and the form `nil' will be `eval'ed there. This can also be used as a group-specific hook function, if you like. If you want to hear a beep when you enter a group, you could put something like `(dummy-variable (ding))' in the parameters of that group. `dummy-variable' will be set to the result of the `(ding)' form, but who cares? Use the `G p' or the `G c' command to edit group parameters of a group. (`G p' presents you with a Lisp-based interface, `G c' presents you with a Customize-like interface. The latter helps avoid silly Lisp errors.) You might also be interested in reading about topic parameters (Note: Topic Parameters).
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