-@code{(iso-8859-1 iso-2022-jp iso-2022-jp-2 shift_jis utf-8)} when
-running Emacs in the Japanese language environment. It is a list of
-coding system symbols (aliases of coding systems are also allowed, use
-@kbd{M-x describe-coding-system} to make sure you are specifying correct
-coding system names). For example, if you have configured Emacs
-to prefer UTF-8, but wish that outgoing messages should be sent in
-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}).
+@code{(iso-8859-1 iso-2022-jp utf-8)} when running Emacs in the Japanese
+language environment. It is a list of coding system symbols (aliases of
+coding systems are also allowed, use @kbd{M-x describe-coding-system} to
+make sure you are specifying correct coding system names). For example,
+if you have configured Emacs to prefer UTF-8, but wish that outgoing
+messages should be sent in 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}).