[luatex] pdf adjustspacing 0.79 vs 0.85

[Patrick Gundlach]

Hi all,

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question: how do I turn on font expansion with 0.85?
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I get different output with LuaTeX 0.79 and 0.85, and I believe it is due to a different font expansion. In 0.79 I use

  tex.pdfadjustspacing = 2

and 

  expansion_factor = 1000

for each character.

Now running the same code with 0.85 it looks pretty much as if I write tex.pdfadjustspacing = 0 with 0.79, so without font expansion.

Question: how do I turn on font expansion with 0.85?


Patrick