Asymmetric uncertainties in \qty

[Hugo-Leung]

I could not get the following code to compile

\documentclass{article}
\usepackage{siunitx}
\begin{document}
\qty{12.10(1:2)(3)}{\meter}
\end{document}

It can compile if I am using \num{12.10(1:2)(3)}, or \qty{12.10(1)(2:3)}. But it get stuck if I have an asymmetric uncertainties in the first brackets in \qty.

[josephwright]

OK, I see the issue here: for quantities, we need to split the formatted number up into parts, and that's going wrong due to the way that multiple uncertainties interact. I just need to think a little about how best to mark these things up internally, then I can make a change.