Special Chars/Emoji in plain Text files

Thanks. I noticed the header does have a slight difference:

my header:
encoding: text/plain

your header:
encoding: text/plain; charset=utf-8

I tried to modify my [outputFormats.humanstxt] to:

[outputFormats.humanstxt]
    baseName = "humans"
    isPlainText = true
    mediaType = "text/plain; charset=utf-8"

But that obviously did not work. I think that is a lack of flexibility to not be able to set the charset/encoding directly.

As I did my search I noticed that the “solution” provided HERE just works for HTML, but will never work for textfiles as they dont have any header in the content itself.
Any other plans how toconfigurate this that it works?