* message.texi (Mail Headers): Document `opportunistic'.

[gnus] / texi / emacs-mime.texi

diff --git a/texi/emacs-mime.texi b/texi/emacs-mime.texi
index 59dec91..650a1b6 100644 (file)
--- a/texi/emacs-mime.texi
+++ b/texi/emacs-mime.texi
@@ -9,8 +9,8 @@
 @copying
 This file documents the Emacs MIME interface functionality.
 
-Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
-          Free Software Foundation, Inc.
+Copyright @copyright{} 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+2006 Free Software Foundation, Inc.
 
 @quotation
 Permission is granted to copy, distribute and/or modify this document
@@ -341,13 +341,14 @@ you could say something like:
       (remove "text/html" mm-automatic-display))
 @end lisp
 
-Adding @code{"image/.*"} might also be useful.  Spammers use it as the
-prefered part of @samp{multipart/alternative} messages, and you might
+Adding @code{"image/.*"} might also be useful.  Spammers use images as
+the preferred part of @samp{multipart/alternative} messages, so you might
 not notice there are other parts.  See also
-@code{gnus-buttonized-mime-types} (@pxref{MIME Commands, ,MIME Commands,
-gnus, Gnus Manual}), to which adding @code{"multipart/alternative"}
-enables you to choose manually one of two types those mails include.
-For example, you can set those variables like:
+@code{gnus-buttonized-mime-types}, @ref{MIME Commands, ,MIME Commands,
+gnus, Gnus Manual}.  After adding @code{"multipart/alternative"} to
+@code{gnus-buttonized-mime-types} you can choose manually which
+alternative you'd like to view.  For example, you can set those
+variables like:
 
 @lisp
 (setq gnus-buttonized-mime-types
@@ -863,6 +864,36 @@ ISO-8859-1 if possible, you can set this variable to
 @code{(iso-8859-1)}.  You can override this setting on a per-message
 basis by using the @code{charset} @acronym{MML} tag (@pxref{MML Definition}).
 
+As different hierarchies prefer different charsets, you may want to set
+@code{mm-coding-system-priorities} according to the hierarchy in Gnus.
+Here's an example:
+
+@c Corrections about preferred charsets are welcome.  de, fr and fj
+@c should be correct, I don't know about the rest (so these are only
+@c examples):
+@lisp
+(add-to-list 'gnus-newsgroup-variables 'mm-coding-system-priorities)
+(setq gnus-parameters
+      (nconc
+       ;; Some charsets are just examples!
+       '(("^cn\\." ;; Chinese
+          (mm-coding-system-priorities
+           '(iso-8859-1 cn-big5 chinese-iso-7bit utf-8)))
+         ("^cz\\.\\|^pl\\." ;; Central and Eastern European
+          (mm-coding-system-priorities '(iso-8859-2 utf-8)))
+         ("^de\\." ;; German language
+          (mm-coding-system-priorities '(iso-8859-1 iso-8859-15 utf-8)))
+         ("^fr\\." ;; French
+          (mm-coding-system-priorities '(iso-8859-15 iso-8859-1 utf-8)))
+         ("^fj\\." ;; Japanese
+          (mm-coding-system-priorities
+           '(iso-8859-1 iso-2022-jp iso-2022-jp-2 shift_jis utf-8)))
+         ("^ru\\." ;; Cyrillic
+          (mm-coding-system-priorities
+           '(koi8-r iso-8859-5 iso-8859-1 utf-8))))
+       gnus-parameters))
+@end lisp
+
 @item mm-content-transfer-encoding-defaults
 @vindex mm-content-transfer-encoding-defaults
 Mapping from @acronym{MIME} types to encoding to use.  This variable is usually