Indexing

[jfritzp]

Consider der following MWE:

\documentclass{scrartcl}

\usepackage[ngerman]{babel}
\usepackage{acro}
\usepackage{imakeidx}
\makeindex

\acsetup{
  index/use = true,
}

\DeclareAcronym{sl}{
  short        = SL,
  long         = Saalleiter,
  index        = {Aufsicht}
}

\begin{document}

foo\index{foo} \ac{sl}

\printindex

\end{document}

Would have expected "Aufsicht" in the index. If index = {Aufsicht} is commented out, "SL" appears in the index. See also (in german):
https://www.texwelt.de/fragen/29413/alternativer-begriff-mit-paket-acro-im-index

This is pdfTeX, Version 3.141592653-2.6-1.40.26 (MiKTeX 24.3) (preloaded format=pdflatex 2024.3.20)  22 MAR 2024 15:51
entering extended mode
 restricted \write18 enabled.
 %&-line parsing enabled.
**./acro-index.tex
(acro-index.tex
LaTeX2e <2023-11-01> patch level 1
L3 programming layer <2024-03-14>


 *File List*
scrartcl.cls    2023/07/07 v3.41 KOMA-Script document class (article)
scrkbase.sty    2023/07/07 v3.41 KOMA-Script package (KOMA-Script-dependent bas
ics and keyval usage)
 scrbase.sty    2023/07/07 v3.41 KOMA-Script package (KOMA-Script-independent b
asics and keyval usage)
scrlfile.sty    2023/07/07 v3.41 KOMA-Script package (file load hooks)
scrlfile-hook.sty    2023/07/07 v3.41 KOMA-Script package (using LaTeX hooks)
 scrlogo.sty    2023/07/07 v3.41 KOMA-Script package (logo)
  keyval.sty    2022/05/29 v1.15 key=value parser (DPC)
tocbasic.sty    2023/07/07 v3.41 KOMA-Script package (handling toc-files)
scrsize11pt.clo    2023/07/07 v3.41 KOMA-Script font size class option (11pt)
typearea.sty    2023/07/07 v3.41 KOMA-Script package (type area)
   babel.sty    2024/02/07 v24.2 The Babel package
 bblopts.cfg    2005/09/08 v0.1 add Arabic and Farsi to "declared" options of b
abel
 ngerman.ldf    2024/01/19 v2.14 German support for babel (post-1996 orthograph
y)
babel-ngerman.tex
    acro.sty    2022/04/01 v3.8 typeset acronyms and other abbreviations (CN)
l3keys2e.sty    2024-03-14 LaTeX2e option processing using LaTeX3 keys
   expl3.sty    2024-03-14 L3 programming layer (loader) 
l3backend-pdftex.def    2024-03-14 L3 backend support: PDF output (pdfTeX)
translations.sty    2022/02/05 v1.12 internationalization of LaTeX2e packages (
CN)
etoolbox.sty    2020/10/05 v2.5k e-TeX tools for LaTeX (JAW)
pdftexcmds.sty    2020-06-27 v0.33 Utility functions of pdfTeX for LuaTeX (HO)
infwarerr.sty    2019/12/03 v1.5 Providing info/warning/error messages (HO)
   iftex.sty    2022/02/03 v1.0f TeX engine tests
 ltxcmds.sty    2023-12-04 v1.26 LaTeX kernel commands for general use (HO)
imakeidx.sty    2016/10/15 v1.3e Package for typesetting indices in a synchrono
us mode
 xkeyval.sty    2022/06/16 v2.9 package option processing (HA)
 xkeyval.tex    2014/12/03 v2.7a key=value parser (HA)
 ifxetex.sty    2019/10/25 v0.7 ifxetex legacy package. Use iftex instead.
ifluatex.sty    2019/10/25 v1.5 ifluatex legacy package. Use iftex instead.
multicol.sty    2023/03/30 v1.9f multicolumn formatting (FMi)
translations-basic-dictionary-german.trsl    (german translation file `translat
ions-basic-dictionary')
acro-index.ind
 ***********