Input (SILE 0.15.13)
\begin{document}
\use[module=packages.indexer]
A rabbit\indexentry[label=rabbit] and a hare\indexentry[label=rabbit].
\printindex
\end{document}
Expected
rabbit . . . . . . . . 1
Observed
rabbit . . . . . . . 1, 1
Analysis
Doh, my bad...
Two small coding mistakes on the very same line. Was I tired when I did break that? 😵💫 But how did it ever work in my final tests? Bah. I'll push a one-liner PR with the fix 🤣