[Tex/LaTex] csquotes and nested citations

Question

It looks like the csquotes package does not allow nested citations such as

\foreignblockcquote{foreign language}[pre-note]
  [post-note with citation \textcite{key2}]
  {key1}[punctuation]{quoted text}

The error message is

Package biblatex error: nested citation command. See the biblatex package document for explanation

but I could not find anything in the csquotes and biblatex user guides. Originally, I was interested in using the \textcite command developed by Audrey in
biblatex footcite and footnote

This question may also be related to
Is it possible to make automatic multiple citations with csquotes and biblatex?

Answer 1

The error has nothing to do with csquotes -- biblatex does not allow nested citations. In your case, I'd use \foreignblockquote (without the "c") and the \cites "Qualified citation list" command (see section 3.7.3 of the biblatex manual). (Note that because I use \cites' optional argument, I have to wrap the command into additional braces in the optional argument of \foreignblockquote.)

\documentclass{article}

\usepackage[ngerman,english]{babel}

\usepackage{csquotes}

\usepackage[style=authoryear]{biblatex}

\SetCiteCommand{\autocite}

\usepackage{blindtext}

\usepackage{filecontents}

\begin{filecontents}{\jobname.bib}
@misc{A01,
  author = {Author, A.},
  year = {2001},
  title = {Alpha},
}
@misc{B02,
  author = {Buthor, B.},
  year = {2002},
  title = {Bravo},
}
\end{filecontents}

\addbibresource{\jobname.bib}

\begin{document}

\blindtext

\foreignblockcquote{ngerman}{A01}{\blindtext}

\foreignblockquote{ngerman}[{\cites{A01}[see also][]{B02}}]{\blindtext}

\printbibliography

\end{document}