Tilde on top of letters are sometimes flat at 10pt

[ariasuni]

ũ (u tilde) at 10pt is very similar to ū (U tilde) (same with A and Ã)

So I have this problem (at least with u) on some versions of Noto Sans but I manage to avoid it with this:

my fontconfig configuration

<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
 <match target="font">
  <edit name="lcdfilter" mode="assign">
   <const>lcddefault</const>
  </edit>
 </match>
 <match target="font">
  <edit name="hinting" mode="assign">
   <bool>true</bool>
  </edit>
 </match>
 <match target="font">
  <edit name="hintstyle" mode="assign">
   <const>hintfull</const>
  </edit>
 </match>
 <match target="font">
  <edit name="rgba" mode="assign">
   <const>rgb</const>
  </edit>
 </match>
</fontconfig>

Sadly, Hack is bit weird here. Here’s a screenshot (KDE —Qt — font picker, but it happens on e.g. Firefox too) showing the problem:

The text here is:

ãÃẽẼĩĨõÕũŨỹỸ
ũū

This is very annoying because I never know what was written. I guess it’s a logical development after #37.