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(sc)Information Keys and the Info Alist

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Information Keys and the Info Alist
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   "Mail header information keys" are nuggets of information that
Supercite extracts from the various mail headers of the original
message, placed in the reply buffer by the MUA.  Information is kept in
the "Info Alist" as key-value pairs, and can be retrieved for use in
various places within Supercite, such as in header rewrite functions and
attribution selection.  Other bits of data, composed and created by
Supercite, are also kept as key-value pairs in this alist. In the case
of mail fields, the key is the name of the field, omitting the trailing
colon.  Info keys are always case insensitive (as are mail headers), and
the value for a corresponding key can be retrieved from the alist with
the `sc-mail-field' function.  Thus, if the following fields were
present in the original article:

     Date: 08 April 1991, 17:32:09 EST
     Subject: Better get out your asbestos suit

then, the following lisp constructs return:

     (sc-mail-field "date")
     ==> "08 April 1991, 17:32:09 EST"
     
     (sc-mail-field "subject")
     ==> "Better get out your asbestos suit"

   Since the argument to `sc-mail-field' can be any string, it is
possible that the mail field will not be present on the info alist
(possibly because the mail header was not present in the original
message). In this case, `sc-mail-field' will return the value of the
variable `sc-mumble'.

   Supercite always places all mail fields found in the yanked original
article into the info alist.  If possible, Supercite will also places
the following keys into the info alist:

`"sc-attribution"'
     the selected attribution string.

`"sc-citation"'
     the non-nested citation string.

`"sc-from-address"'
     email address extracted from the `From:' field.

`"sc-reply-address"'
     email address extracted from the `Reply-To:' field.

`"sc-sender-address"'
     email address extracted from the `Sender:' field.

`"sc-emailname"'
     email terminus extracted from the `From:' field.

`"sc-initials"'
     the author's initials.

`"sc-author"'
     the author's full name.

`"sc-firstname"'
     the author's first name.

`"sc-lastname"'
     the author's last name.

`"sc-middlename-1"'
     the author's first middle name.

   If the author's name has more than one middle name, they will appear
as info keys with the appropriate index (e.g., `"sc-middlename-2"',
...).  Note: Selecting an Attribution.