Cfrgtkky

Description:

I am using a small modification to automatically add the abbreviation "cf." into citation prenotes:

renewbibmacro*{prenote}{%

    iffieldundef{prenote}%

    {% true

        printtext{cfadddot}%

    }{% false

        printfield{prenote}}%

    setunit{prenotedelim}%

}%

Always adding "cf." is mostly useful, but not in every case. Therefore I want to outsource this auto-prenote into a separate NewDocumentCommand. Only when typing cf-cite or cf-autocite the abbreviation should be added as a prenote.

How can I introduce that?

Minimum Working Example (MWE):

begin{filecontents}{jobname.bib}  

    @book{Doe,author = {Doe, Jon},date = {1998}}

end{filecontents}



% ----------------------------------------------------------------------------------



documentclass{book}



usepackage[backend=biber,citestyle=numeric,style=authoryear,natbib=true]{biblatex}

usepackage{filecontents}



setlengthparindent{0pt}



renewbibmacro*{prenote}{%

    iffieldundef{prenote}%

    {% true

        printtext{cfadddot}%

    }{% false

        printfield{prenote}}%

    setunit{prenotedelim}%

}%



bibliography{jobname}



begin{document}



    This is a very simple example to demonstrate citing with auto-added prenotes autocite[25]{Doe}.



    parbigskip As you can see, the abbreviation enquote{cf.} will always be displayed. It is not possible to keep this field empty anymore. However, this is not useful in every case. Therefore I want to generate two textbackslash NewDocumentCommand's:



    begin{itemize}

        item textbackslash cf-cite and

        item textbackslash cf-autocite

    end{itemize}



    Only when using one of those two new commands, the previous mentioned enquote{cf.} should be displayed as a prenote. In all other cases the field should remain empty.



    parbigskip How can I do that?



end{document}

Edit: When thinking about my previous idea that does not make big sense anymore. It does not matter if I have to write autocite[cf.][35]{Doe} or cf-autocite[35]{Doe}. :-)

This is not exactly what you asked for, but I think it is an improvement on your attempt. I do think having the prenote built in is a little over, but to have your own "outsourced" prenotes as you suggested would require quite some structure with DeclareCitationCommand for each variant of the several biblatex commands available for which you'd want this facility.

I think your original structure would work quite well in practice, and it is easy to disable the automatic insertion of "cf." with a simple toggle.

begin{filecontents}{jobname.bib}

  @book{Doe,author = {Doe, Jon},date = {1998}}

end{filecontents}



% ----------------------------------------------------------------------------------



documentclass{book}



usepackage[backend=biber,citestyle=numeric,style=authoryear,natbib=true]{biblatex}

usepackage{filecontents}



setlengthparindent{0pt}



newtoggle{nocf}

newcommand*{nocf}{AtNextCite{toggletrue{nocf}}}



renewbibmacro*{prenote}{%

  iffieldundef{prenote}%

  {% true

    iftoggle{nocf}{}{%

      printtext{cfadddot}%

    }%

  }{% false

    printfield{prenote}%

  }%

  setunit{prenotedelim}%

}



addbibresource{jobname.bib}



begin{document}



This is a very simple example to demonstrate citing with auto-added prenotes

autocite[25]{Doe}.



bigskip

As you can see, the abbreviation “cf.” will be displayed by

default. But it is possible to leave it empty with

‘verb|nocf|’ nocfautocite[34]{Doe}.



bigskip

However, without it, the default behavior is back autocite[29]{Doe}.



end{document}