Re: How Firefox shows characters missing in font

[David De La Harpe Golden]

Lennart Borgman wrote:

> Would not that be much more work when using the existing "SIL Unicode
> BMP Fallback Font"?

Well, that depends.  I was thinking of the "emacs draws the hexdigits in 
the boxes itself" case - Only need to come up with 16 tiny glyphs a few 
times, once you go beyond 6x8 or maybe 8x10 of pixel space available per 
hexdigit it probably makes some sense to just use an ordinary font 
rendering call for each hexdigit, and below 3x4 you really only could 
put in vague indicative dots/blobs anyway.

Mind you, I guess using the SIL Unicode BMP fallback font gives you 
subpixel rendering of the hexdigits for free.  But of course it's only 
done for the BMP.