net/textproto: Please add MIMEHeader.Write and WriteSubset like net.http.Header

[eahydra]

Can you add MIMEHeader.Write and WriteSubset function like net.http.Header?

Thanks.

[bradfitz]

Comment 1:

WriteSubset is a bit of an accident. I don't think we ever meant to export it.
I don't think we want to grow the API at this point. There's no hidden state in a
textproto mime header, so you're free to copy/paste the Write functions as needed.

Status changed to WontFix.

[eahydra]

Comment 2:

OK.