Charles Jie wrote:
> I found mutt can not decode qp strings in Subject if there is space in it. Such like
>
> =?big5?Q?Re: =BCW=A5[=B1z=AA=BA=A6=AC=A4J?=
>
> If I change ' ' to '=20', it works.
>
> Does the spec. of qp not allow spaces?
No. Quote from RFC 2047:
IMPORTANT: 'encoded-word's are designed to be recognized as 'atom's
by an RFC 822 parser. As a consequence, unencoded white space
characters (such as SPACE and HTAB) are FORBIDDEN within an
'encoded-word'. For example, the character sequence
=?iso-8859-1?q?this is some text?=
would be parsed as four 'atom's, rather than as a single 'atom' (by
an RFC 822 parser) or 'encoded-word' (by a parser which understands
'encoded-words'). The correct way to encode the string "this is some
text" is to encode the SPACE characters as well, e.g.
=?iso-8859-1?q?this=20is=20some=20text?=
So you should complain to the authors of the sender's software.
Regards...
Michael
