On Tue, 18 Feb 2025 at 09:10, Petr Olsak
On 2/17/25 18:12, luigi scarso wrote:
So it's a bug even considering 7.5.5 Math italic mess of the reference luatex.pdf ?
-- luigi
Section 7.5.5 is very vague, its example of \mathitalicsmode=0 or 1 show no difference (more exactly: I am unable to see any difference).
When we keep the example 1.$f!$, 2. $f$!, 3. $f\/$! and we say, that italic correction inserted is correct in all three cases (as XeTeX does it), then we can see:
\mathitalicmode=0: 1. OK, 2 bad, 3. bad
\mathitalicmode=1: 1. OK, 2 bad, 3. OK
\mathitalicmode=2: 1. bad, 2 OK, 3. OK
It is magic.
Petr
nothing is magic, at most it is not well documented; the C code is the definitive reference. See https://github.com/TeX-Live/texlive-source/blob/trunk/texk/web2c/luatexdir/t... -- luigi