Como continuación de mi anteriorpreguntasTengo un problema con babely estonia.
\documentclass[a4paper,11pt,estonian]{article}
%\documentclass[a4paper,11pt,british]{article}
\usepackage[margin=2.5cm]{geometry} % for margins on a A4paper
\usepackage[tracking=true,factor=1100,stretch=10,shrink=10,final]{microtype} % have some better layout of individual chars
\usepackage[shorthands=off]{babel}
\directlua{luaotfload.add_fallback("fntFallback",{
"DejaVu Sans:mode=harf",
"NotoColorEmoji:mode=harf"})}
\babelfont{rm}%
[RawFeature={fallback=fntFallback},SmallCapsFont={TeX Gyre Termes},SmallCapsFeatures={Letters=SmallCaps}% fonts for small caps
]{Liberation Sans}% Ligatures=TeX ist set automatically (used to have the automatics ligatures of TeX)
\usepackage{hyphenat} % allows hyphenation of compound words like 'Test- und Produktivszenarien' (see source code)
\def\linkText#1{\xscan#1\relax}% calls xscan which looks ahead one token, #1
\def\xscan{\afterassignment\xxscan\let\token= }% assign single token to \token and call \xxscan
\def\xxscan{%
\ifx\token\relax\else%test for end-of-line or end of group and switch to ttfamily
\ifcat\token\space%
\token% token is catcode 10
\spaceskip=.5em% remove glue from space for fixed-width space
\xspaceskip=.5em% remove glue from space for fixed-width space
\else%
\token\hskip 0pt plus 1sp minus 1sp % add glue to any non-catcode 10 (space)
\fi
\spaceskip=0pt% reset space skip
\expandafter\xscan% feed next token to \xscan, which is effectively a recursive call
\fi}
\usepackage[pdfa, unicode]{hyperref}
\begin{document}
\section{test}
Kant ipsum test 1 (\hyperlink{l4194-c8833}{\linkText{AA 27-10-2023}}).
\begin{itemize}
\item
{\hypertarget{l4194-c8833}{}}XX -
{\selectlanguage{naustrian}Test für Österreich}
(27-10-2023):
\end{itemize}
\end{document}
El código no se compilará. Falla en la segunda carrera. Si bien agregar naustriana la articleclase resuelve mi problema, no entiendo por qué el código se compila con british.
Lo que plantea la pregunta: ¿Cuál es la solución "correcta" al problema? ¿Está relacionado con estoniael paquete de idioma? ¿O simplemente falta en la definición de babel(o documentclass)?