Wrong decoding of email with charset=ISO-2022-JP

[josch]

Hi,

I have an email with:

Content-Type: text/plain; charset=ISO-2022-JP
Content-Transfer-Encoding: 7bit

And it gets rendered like this:

?$BL@F|?(B3?$B7n?(B23?$BF|?(B(?$BEZ?(B)PM12:00?$B!A!V%*%s%i%$%s%7%g%C%W8BDj!W%0%C%:$,HNGd3+;O!*?(B

?$B%a%s%P!<8DJL%"%$%F%`!*?(B
?$B!X%3%s%Q%/%H%_%i!<!Y!X%"%/%;%5%j!<%1!<%9!Y!X%0%i%9%-%c%s%I%k!Y$rHNGd!#?(B

?$B%"%/%;%5%j!<%1!<%9$K$O%i%s%@%`%U%)%H%+!<%I$b<}G<2DG="v?(B

?$B%0%i%9%-%c%s%I%k$O3F%a%s%P!<$,9a$j$r%;%l%/%H$7$^$7$?$C"v?(B

?$B$^$?!">e5-%"%$%F%`$r<}G<2DG=$J6&DL%G%6%$%s$N!X%a%C%7%e%]!<%A!Y$bEP>l!*?(B

?$B5$$K$J$k%G%6%$%s$d9a$j$J$I$O3F%Z!<%8$r%A%'%C%/!*?(B
?$BHNGd$r$*3Z$7$_$K"v"v?(B

The expected rendering would be this:

?????･3???23??･(???)PM12:00????????ｪ??ｳ??ｩ??､??ｳ??ｷ??ｧ??????????ｮ??????ｰ?????ｺ????ｲｩ?｣ｲ????ｧ??ｼ?

??｡??ｳ?????ｼ?????･??｢??､???????ｼ?
?????ｳ??ｳ?????ｯ????????ｩ??ｼ????????｢??ｯ??ｻ??ｵ??ｪ??ｼ??ｱ??ｼ??ｹ????????ｰ??ｩ??ｹ??ｭ??｣??ｳ?????ｫ???????ｲｩ?｣ｲ???

??｢??ｯ??ｻ??ｵ??ｪ??ｼ??ｱ??ｼ??ｹ??ｫ??ｯ??ｩ??ｳ???????????ｩ?????ｫ??ｼ??????????ｴ???ｯ??ｽ??ｪ

??ｰ??ｩ??ｹ??ｭ??｣??ｳ?????ｫ??ｯ?????｡??ｳ?????ｼ????ｦ?????????ｻ??ｬ??ｯ????????ｾ????????｣??ｪ

??ｾ???????ｸ??ｨ???｢??､?????????????ｴ???ｯ??ｽ??ｪ??ｱ????????ｶ??､??ｳ??ｮ?????｡?????ｷ??･?????ｼ???????????ｻ??ｴ?ｼ?

?ｰ???ｫ??ｪ????????ｶ??､??ｳ????ｦ??????ｪ??ｩ??ｯ????????ｼ??ｸ????????ｧ?????ｯ?ｼ?
?ｲｩ?｣ｲ???????･ｽ?????ｿ??ｫ??ｪ??ｪ

To reproduce this, here is the original mail that causes this issue.

You can decode that file by using:

python3 -c 'import email,sys;b=email.message_from_file(sys.stdin);print(b.get_payload(decode=True).decode("iso-2022-jp"))' < mail.txt

[teto]

yep I have 2 different kinds of errors: here is the concerned PR https://github.com/pazz/alot/pull/1369