A strange discrepancy between LuaTeX and XeTeX

[Philip Taylor]

On 05/03/2025 14:58, Philip Taylor wrote:

My wine list, previously referred to, include the following font definition —

\font \vfont = "ITC Zapf Chancery"/B:color=007700;embolden=4;slant=-0.1 at 11pt

In XeTeX, characters set in this font appear as intended (green, emboldened, slight slant).  In LuaTeX, they appear green-with-black-stroke, emboldened, slight slant.  Does anyone have any idea from whence the black stroke is coming ?

I should add that, at one additional level of abstraction, I do know from whence comes the black stroke — it comes from the "embolden=4" attribute.  But why should LuaTeX embolden by stroking in black when XeTeX emboldens by stroking in the font's fill colour ?

--
Philip Taylor

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