[PATCH 5/6] dwrite: Use MapCharacters for non-visual characters

[Lucian Poston]

On Sat, May 26, 2018 at 06:43:39AM -0700, Nikolay Sivov wrote:
> This only works together with patch 4/6, right?

Yes. Some of the fixed tests in 5/6 will fail without 4/6 applied before this
one.

> What we need to figure 
> out here is which font is picked in NO_VISUAL case, does it change with 
> range locale,
> or custom collection. Then we can either hardcode it here, or add 
> corresponding char ranges.

Going from memory, it was tahoma in win 10 (without custom collection), but I
suspect that comes from the system font collection or system fontfallback
object.

I don't know if you'd want to hardcode it here. The fontfallback allows you
define a mapping between char ranges and font, so the system's fontfallback
would seem like the appropriate place for that.