Help to develop a \textcite command to be used with verbose citation styles in Biblatex (help with \DeclareCiteCommand)

Question

I want to have a \textcite command to be used with verbose citation styles in Biblatex. It should do something as this:

I use it within the text, to replace the subject of a sentence:

As \textcite[4]{JohnDoe} said...

And the result would be something like

As John Doe¹ said...

. . .

__

1. John Doe. Booktitle. Address: Publisher, 2011, p. 4.

Or, if it's not the first citation:

As John Doe² said...

. . .

__

1. Doe, Booktitle, p. 4.

I tried to do so with the following command:

\renewcommand{\textcite}[2][]{\citename{#2}{author}\footcite[#1]{#2}}

but I know this isn't the best approach (just to begin, it completely ignores the punctuation tracker), since there are those \DeclareCiteCommand especially designed to do something like this --- I just can't understand how to use them...

Answer 1

The previous version of this answer defined a command that combined the results of \citeauthor and \autocite, but it didn't always account for punctuation correctly.

The code below relies on internal biblatex commands to parse arguments and trailing punctuation. Some refinements for inline citation delimiters are also provided.

Note the new \textcite command (like the last one) cannot be extended to a multicite version via \DeclareMultiCiteCommand. Accounting for punctuation in the multicite setting isn't straightforward.

\documentclass{report}
\usepackage[style=verbose,citepages=omit,maxcitenames=1]{biblatex}
\bibliography{biblatex-examples}

% Track citations globally (for demonstration)
\ExecuteBibliographyOptions{citetracker=true}

\makeatletter

\newcommand*{\addcitedelim}{%
  \ifnumequal{\blx@maxcitenames}{1}
    {\addcomma}
    {\addsemicolon}}

\newcommand*{\addfinalcitedelim}{%
  \ifnumequal{\blx@maxcitenames}{1}
    {\addspace\bibstring{and}}
    {\addsemicolon}}

\newcommand*{\textcitedelim}{%
  \ifnumequal{\the\c@citecount}{\the\c@citetotal}
    {\addfinalcitedelim\space}
    {\addcitedelim\space}}

\protected\def\blx@textcitepunct#1{%
  \blx@citeargs{\blx@textcitepunct@i{#1}}}
\long\def\blx@textcitepunct@i#1#2#3#4{%
  \blx@thecheckpunct{\blxcitecmd{#1}{#2}{#3}{#4}}}

\renewrobustcmd*{\textcite}{\blx@textcitepunct{textcite}}
\long\csdef{blx@cite@textcite}#1#2#3#4{%
  \AtNextCite{%
    \let\multicitedelim=\textcitedelim}%
  \citename{#3}[first-last]{labelname}%
  #4% Move trailing punctuation between two citation commands
  \footcite[#1][#2]{#3}}

\makeatother

\begin{document}
\null\vfill

What can we learn from \textcite{cicero}?
Following \textcite{cicero}, we adapt some related findings from
\textcite[See][529--530]{kant:ku} and \textcite{aksin}.
We obtain results from various authors---namely:
\textcite[See][for example]{cicero,aksin,bertram}.

\printbibliography
\end{document}

Answer 2

EDIT: Philipp improved his own solution. He will add this feature in the verbose style.

\documentclass{article}
\usepackage[style=verbose,backend=biber]{biblatex}
\addbibresource{biblatex-examples.bib}
\makeatletter

\DeclareCiteCommand{\textcite}[\cbx@textcite\footcite]
  {\gdef\cbx@savedkeys{}}
  {\printnames{labelname}%
   \xappto\cbx@savedkeys{\thefield{entrykey},}}
  {\multinamedelim}
  {\protected@xappto\cbx@savedcites{%
     [\thefield{prenote}][\thefield{postnote}]{\cbx@savedkeys}}}

\newrobustcmd{\cbx@textcite}[2]{%
  \def\cbx@savedcites{#1}#2\cbx@savedcites}

\DeclareMultiCiteCommand{\textcites}[\cbx@textcite\footcites]{\textcite}{\multinamedelim}

\makeatother
\begin{document}

\textcite{augustine} claims that \textellipsis

\textcite[55]{augustine} claims that \textellipsis

\textcite[Cf.][]{augustine} claims that \textellipsis

\textcite{augustine,hammond,cotton} show that \textellipsis

\textcites{augustine,hammond,cotton} show that \textellipsis

\textcites{augustine}{hammond}{cotton} show that \textellipsis

\textcites[55]{augustine}[33]{hammond}[99]{cotton} show that \textellipsis

\end{document}

Philipp Lehmann explained me the following solultion:

\textcite is pretty self-explanatory. \cbx@textcites performs the equivalent of \citeauthor (synchronously with the loop) but also collects all arguments for later use. \cbx@textcitewrapper uses this data to issue a \footcites command which puts all citations in a single footnote. \DeclareMultiCiteCommand provides the user interface.

\documentclass{article}
\usepackage[style=verbose,backend=biber]{biblatex}
\addbibresource{biblatex-examples.bib}
\makeatletter

\renewrobustcmd*{\textcite}{\blx@citeargs\cbx@textcite}
\newcommand{\cbx@textcite}[3]{%
  \citeauthor{#3}\footcite[#1][#2]{#3}}

\DeclareCiteCommand{\cbx@textcites}
  {\gdef\cbx@savedkeys{}}
  {\printnames{labelname}%
   \xappto\cbx@savedkeys{\thefield{entrykey},}}
  {\multicitedelim}
  {\protected@xappto\cbx@savedcites{%
     [\thefield{prenote}][\thefield{postnote}]{\cbx@savedkeys}}}

\newrobustcmd{\cbx@textcitewrapper}[1]{%
  \gdef\cbx@savedcites{\footcites}#1\cbx@savedcites}

\DeclareMultiCiteCommand{\textcites}[\cbx@textcitewrapper]{\cbx@textcites}{\multicitedelim}

\makeatother
\begin{document}

\textcite{augustine} claims that \textellipsis

\textcite[55]{augustine} claims that \textellipsis

\textcite[Cf.][]{augustine} claims that \textellipsis

\textcite{augustine,hammond,cotton} show that \textellipsis

\textcites{augustine,hammond,cotton} show that \textellipsis

\textcites{augustine}{hammond}{cotton} show that \textellipsis

\textcites[55]{augustine}[33]{hammond}[99]{cotton} show that \textellipsis

\end{document}