1 clarify what attach_charset does, see http://bugs.mutt.org/3165
2 and http://bugs.debian.org/502628
9 ** This variable is a colon-separated list of character encoding
10 - ** schemes for text file attachments.
11 + ** schemes for text file attachments. Mutt uses this setting to guess
12 + ** which encoding files being attached are encoded in to convert them to
13 + ** a proper character set given in $$send_charset.
15 ** If \fIunset\fP, the value of $$charset will be used instead.
16 ** For example, the following configuration would work for Japanese