Re: 23.0.60; Heavy display problems with new font backend

[Jason Rumney <jasonr@gnu.org>]

Tassilo Horn wrote:
>   - quite often a "w", "k", "S" or "r" looks bold although it shouldn't
>   - "m" has a green shine between its legs
>   - fonts aren't sharp as if subpixel hinting was disabled
>
> The attached pics fonts{1,2,3,4}.png show some of those minor display
> problems.
>   

I only see the first problem. Which suggests that the subpixel 
antialiasing is correct for my display but incorrect for yours, as the 
letters all look sharp for me, without any more color artifacts than 
you'd expect from subpixel antialiasing.

> While trying to find some more of those display problems I opened the
> attached UTF-8 testfile and found a major display bug.  The pics
> v-with-dot.png and v-with-dot2.png show it.
>   

These seem to be problems in the composition rules for those modifiers. 
Things probably don't look much better with the old font code either.

> Additionally in that file most greek chars aren't antialiased.
>   

Only some fonts support antialiasing.  If you try different greek fonts, 
you might find one where it works.