[luatex] Font expansion and virtual fonts

[Patrick Gundlach]

some more details (before I make a test case)

the glyphs of the real font have an expansion_factor of -10000 (post_linebreak) and the virtual fonts have an expansion_factor of 0 (so the question is: why).

The PDF also shows the expected differences:

real:

BT
/F11 9.99999 Tf 0.99 0 0 1 28.346 804.543 Tm [<006d032503710371038e>-252<03fe038e03be037103190848>-252<07e707e807e907ea07eb07ec07ed07ee07ef07e6>]TJ
ET

virtual:

BT
/F13 9.99999 Tf 1 0 0 1 28.346 804.543 Tm [<006d032503710371038e>-194<03fe038e03be037103190848>-195<07e707e807e907ea07eb07ec07ed07ee07ef07e6>]TJ
ET

(see the difference in the first argument to the Tm and the different kerning)

So I will investigate further where I messed up.

Thanks so far!
  Patrick