Comment 5 for bug 1582819

> and you presumably want 'adatbázis', not 'adatbázi s'. There are always
> whitespace issues when mixing encoded words and plain text in one
> header. The proper encoding of that header is
>
> Subject: PIVOT kutatásfinanszírozási adatbázis
>
> Granted, various MUAs are more forgiving of the defects, but the Mailman
> issue is really in the underlying Python email package which insists
> that the terminating ?= be followed by white space in order that the
> encoded word be recognized as such.
>

Just to be clear, if I have a Q encoded word as in rfc2047, and there is a \n
and space after it, mailman puts an extra space in place.
The only solution is if I encode all "words" even if that is not needed.
rfc2047 allow to have encoded words mixed with non encoded texts.

"Ordinary ASCII text and 'encoded-word's may appear together in the
    same header field. However, an 'encoded-word' that appears in a
    header field defined as '*text' MUST be separated from any adjacent
    'encoded-word' or 'text' by 'linear-white-space'"

So this is a BUG in the underlying python package.