Is it possible to have biblatex-chicago not print the 'hereafter cited as X' message for entries with a shorthand if the entry is only cited once in the document?
MWE:
\documentclass{article}
\begin{filecontents}{test.bib}
@book{entry,
title = {Book's title},
author = {Author, Some},
shorthand = {shorthand}
}
\end{filecontents}
\usepackage{biblatex-chicago}
\bibliography{test}
\begin{document}
Lorem ipsum.\autocite{entry}
\end{document}
Ideally, this would produce a footnote that says simply 'Some Author, Book's title' rather than including '(hereafter cited as shorthand)', as it does now.

biblatex-chicagosource files; is that correct? If so, is that something to keep an eye on for maintaining this code going forward? – AVB Nov 21 '19 at 14:04chicago-notes.cbx. Of course future changes to that file might mean that the code diverges from the original more than intended. If you prefer you can patch the macro instead. That could be more robust. See the discussion in https://tex.stackexchange.com/q/409091/35864. – moewe Nov 21 '19 at 16:59