babel, fontsetup, and NewComputerModern (and other fonts)

[GMS103]

French spacing does not seem to work anymore. The following does not add any spacing before :?!;.

% !TEX encoding = UTF-8 Unicode
% !TEX program = xelatexmk
\documentclass[french]{report}
\usepackage{fontspec}
\usepackage{fontsetup} % will load the Book weight of the NewCM family
\usepackage[main=french]{babel}
\begin{document}
Ààà: bbb? ccc! ddd; ééé.
\end{document}

Using other fonts instead of NewComputerModern does not work either. Commenting \usepackage{fontsetup} to use CM it works as before.

[u-fischer]

fontspec now loads the ucharclass package. You would need something similar to https://tex.stackexchange.com/a/261091/2388 with the command names translated for babel-french.

[GMS103]

Thanks, Ulrike. When you say "you", do you mean "me", or "Javier"?

[u-fischer]

Imho either you in your document or Daniel Flipo in babel-french.

[GMS103]

Thanks, I told Daniel in case he could solve it for everybody.

[jbezos]

Given the huge limitations in the interchar mechanism, I think loading ucharclasses by default is not a good idea.

[jbezos]

I'm closing this issue because it’s not directly related to the babel core. However, I’ll keep an eye on it because I was currently working on language dependent interchar rules (https://latex3.github.io/babel/news/whats-new-in-babel-3.97.html).

[jbezos]

fontspec now loads the ucharclass package

I was re-installing my system and I couldn’t make tests, but now I realize there was a slip: you meant fontsetup, which is quite fine 😌.