In https://stackoverflow.com/a/25255559/1118719 we see
AddCharset utf-8 .html .css .php .txt .js
That is marvelous for files named bla.html, bla.css, etc.
But how to match just files named bla?
Sure, one could try e.g.,
AddCharset utf-8 .html .txt ""
but that doesn't work.
Yes, maybe there is no solution for 'bla' and 'bla.'.