From: Nobuyoshi Nakada <nobu.nokada@...>
Date: 2003-04-17T13:58:56+09:00
Subject: Re: ANN: RFC 2047 decoding library (MIME format for non-ascii in mail headers)

Hi,

At Thu, 17 Apr 2003 13:41:29 +0900,
Sam Roberts wrote:
> The decoder is correctly pulling the base64 out of your example, it is
> then decoding it to binary, correctly I assume, unless there is a bug
> in ruby b64 code :-). However, Iconv.iconv() is dropping some of the
> trailing bytes when converting from what is (claimed to be) iso-2022-jp
> to is-2022-jp. Any idea what those characters are? Some sort of terminal
> reset sequence, perhaps? Maybe iso-2022-jp is stateful, in some way?

Yes, iso-2022-jp is stateful.  So you have to use Iconv.close
and append the result at the end of conversion.

> GyRCJEgbKEIgGyRCJFIkaSQsJEobKEI=  (b64)
> "\e$B$H\e(B \e$B$R$i$,$J\e(B"     (binary, iso-2022-jp)
> "\e$B$H\e(B \e$B$R$i$,$J"         (Iconv.iconv from iso-2022-jp to iso-2022-jp)

Iconv.close should return "\e(B" here.

-- 
Nobu Nakada