[tlbuild] Problems with xdvipdmfx (at least) and some fonts

[Fabian Greffrath]

Dear Arthur,

Am Montag, den 31.08.2015, 15:17 +0100 schrieb Arthur Reutenauer:
>   This makes sense and may solve a long-standing issue that XeTeX has
> been having with multiple copies of the same font.  Thanks for you
> patch.  I will apply it to the upstream sources, after proper testing of
> course.

thank you for looking into this!

> This makes perfect sense now, because the fonts are ordered by family
> first, then by style and then by glyph coverage (except for the italic
> style, apparently; I will have to investigate that; maybe I have to add
> some other properties to be saved in the FcObjectSet).

Actually, this issue is mitigated by starting with an already ordered
allFonts font set. The attached patch does just this, I hope it to be
my final take on this. ;)

Best regards,

Fabian

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