I see the 2 first lines in ascii.png with strange characters.
What characters are ?
I don't see them in Minecraft.
Those are accessible by pressing alt+[a number on your numpad].
You can also hold alt to enter numbers such as 12.
(The Numpad is on the far right of your keyboard)
I hope that helps!
But don't replace the ß letter, it's an old letter still used in the german language.
(Many resource packs since the old days replace it with ♂)