How to set EMACS fonts rendering the same as the other KDE applications

Here's how to fix the default too wide and too "round" fonts rendered in EMACS under KDE (and maybe other DE, too).

Write this into the ~/.Xdefault file:

Xft.antialias: 1
Xft.hinting: 1
Xft.hintstyle: hintfull
Xft.rgba: rgb

After that, run the following:

$ xrdb -merge ~/.Xdefaults

And after that EMACS will really get the same-looking fonts as the other system around it. Thank you Atragor for your answer at archlinux.org