[Dev-luatex] Re: Unicode math: italic correction at the end of the math list

On Mon, 17 Feb 2025 at 17:13, luigi scarso wrote:

On Mon, 17 Feb 2025 at 16:45, Ulrike Fischer wrote:

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Am Mon, 17 Feb 2025 16:33:47 +0100 schrieb luigi scarso:

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On Mon, 17 Feb 2025 at 13:36, Petr Olsak wrote:

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Hi Luigi,

I thought someone might be interested and might want to fix it for version TeXlive 2025. At least \/ behavior fixing. I understand, that the question in general (if insert italic correction at almost each end of math list or not) needs more analysis and more discussion. But \/ question is simpler.

Personally, I don't mind that it won't be right away. We can wait.

I agree with Petr that the handling of italic correction at the end of the math is a bit of a pain. It pops up in questions and discussions regularly. As luatex inserts it only if a character follows, we have experimented with zero width joiner and other options but nothing looks really natural. Eg

\documentclass{article} \usepackage{unicode-math} \setmathfont{XITS Math} \begin{document} $\mathcal{P}x \mathcal{P}$x

$\mathcal{P}\strut x \mathcal{P}\Uchar"200D$x \end{document}

-- Ulrike Fischer http://www.troubleshooting-tex.de/

So it's a bug even considering 7.5.5 Math italic mess of the reference luatex.pdf ?

Yes (or perhaps unfortunate design rather than bug) the mathitalicsmode parameter described in that section doesn't allow a specification of a behaviour compatible with other engines. As Ulrike says you have to try to force in an invisible character node or add the italic correction "by hand" for luatex. David

-- luigi _______________________________________________ dev-luatex mailing list -- dev-luatex@ntg.nl To unsubscribe send an email to dev-luatex-leave@ntg.nl