> Might this be a newly introduced Mac keyboard input problem?

Thank you.  I will look into it.  I do use Karabiner Elements...

> I suspect there may be a change in behavior with iconv between BigSur and
> Sequoia.  It would be helpful if I could have an example to work with.
> Would you be willing to provide an mbox with the problematic email to me, or
> to attach it to a GitLab ticket?

Thank you.  I try to make an example with this e-mail.  I set
encode_from=yes so that this e-mail is quoted-printable encoded.  It
seems I require the following line for this e-mail to be actually
quoted-printable encoded.

From 

The five lines below consist of 65 to 69 ASCII number characters
followed by two double-byte Japanese characters for "A" and "B".

12345678901234567890123456789012345678901234567890123456789012345AB
123456789012345678901234567890123456789012345678901234567890123456AB
1234567890123456789012345678901234567890123456789012345678901234567AB
12345678901234567890123456789012345678901234567890123456789012345678AB
123456789012345678901234567890123456789012345678901234567890123456789AB

When you see the raw file of this quoted-printable e-mail, you see at
the beginning of Japanese characters the start mark =1B$B, followed by
Japanese characters themselves (in our case, #A for "A" and #B for "B"),
followed by the end mark =1B(B.

Now, since the lines are long, quoted-printable breaks each line by
inserting =.  The last parts of the above five lines read:

12345=1B$B#A#B= (line break) =1B(B
123456=1B$B#A#B= (line break) =1B(B
1234567=1B$B#A#= (line break) B=1B(B
12345678=1B$B#A= (line break) #B=1B(B
123456789=1B$B#= (line break) A#B=1B(B

When I see this e-mail using mutt in Sequoia, the last parts of the
above five lines read:

12345AB
123456AB
1234567A#B
12345678AB
123456789AB

Note that at the third line, the raw #B appears which should be the
double-byte B.  (I don't understand why the fifth line is OK.  It
seems #A is split by the newline.)  But if I see the same e-mail in
BigSur, I see:

12345AB
123456AB
1234567AB
12345678AB
123456789AB

without the problem occurred in Sequoia.

-- 
Kenichi Asai

Reply via email to