Re: quick & dirty alternate addresses

>> Nope, my MUA has never treated the display-name as an opaque
>> string. It decodes it and, upon reply, copies the whole address
>> (display name and angle-addr) directly into the "To:" field where it
>> expects to be able to be able to re-encode it for sending. But when
>> the MUA tries to re-encode the address, it finds these angle-bracketed
>> things that it thinks are illegal addresses and chokes.
>
> How is this anything but a software bug?

it's a very common bug.  it means the installed base will be less 
tolerant of the change, because those running buggy software will get 
surprising results when they try to reply to messages.