biblatex : avoid redundant information

Question

I'm exploring the great possibilities of biblatex ... and there are a few questions I can't resolve.

I'll start :) with one (edit !) of them :

I'm using "crossref" to cite several chapters in a book. Currently, when a second chapter in the same book is cited, all information about the publisher etc is reprinted. I'd like only the first reference to the book to have the full information, the following chapter could just have "author, chapter, in : bookname, op. cit."

Something tells me this should be possible ... would you know how to achieve this ?

Thanks in advance, Jos

Here's a small code :

\documentclass[ngerman,french]{article}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}

\makeatletter
\usepackage{lmodern}
\usepackage{perpage}
\MakePerPage{footnote}
%% Biblatex %%
\usepackage[language=french,%
autopunct=true,%
  citestyle=verbose-trad2,%
   strict,% 
   citepages=suppress,% 
   idemtracker=true,% 
   loccittracker=true,%
   opcittracker=true,%
  related=false,
      bibstyle=reading,entryhead=false,entrykey=false,annotation=false,abstract=false,library=false,file=false,%
backend=biber]%
{biblatex}%

\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@Book{MH_Holzwege,
  keywords =     {MH,D},
  author =   {Martin Heidegger},
  title =    {Holzwege},
  publisher =    {Vittorio Klostermann},
  address =      {Frankfurt a. M.},
  year =     2003,
  series =   {Einzelausgabe des Bd. 5 der Gesamtausgabe},
  edition =      {8., unver\"{a}nderte Auflage},
  addendum =     {1. Publikation: 1950}}

@InBook{MH_Kunstwerk,
  keywords =     {MH,D},
  author =   {Martin Heidegger},
  title =    {Der Ursprung des Kunstwerkes},
  pages =    {1--74},
  crossref = {MH_Holzwege}
}

@InBook{MH_NietzscheGott,
  keywords =     {MH,D},
  author =   {Martin Heidegger},
  title =    {Nietzsches Wort `{Gott} ist tot'\,},
  pages =    {193--247},
  crossref = {MH_Holzwege}
}

@InBook{MH_Weltbild,
  keywords =     {MH,D},
  author =   {Martin Heidegger},
  title =    {Die Zeit des Weltbildes},
  pages =    {69--104},
  crossref = {MH_Holzwege}

@Book{MH_SZ,
  keywords =     {MH,D},
  author =   {Martin Heidegger},
  title =    {{Sein und Zeit}},
  address =      {T\"{u}bingen},
  publisher =    {Max Niemeyer},
  year =     2001,
  edition =      {18. Auflage},
  addendum =     {1. Publikation: 1927}}
    }

\end{filecontents}
\addbibresource{\jobname.bib}

\makeatother

\usepackage{babel}
\addto\extrasfrench{\providecommand{\og}{\leavevmode\flqq~}\providecommand{\fg}{\ifdim\lastskip>\z@\unskip\fi~\frqq}}

\begin{document}

\title{Titre}


\author{A. Teur}

\maketitle

Texte\footcite[20]{MH_Kunstwerk}.

Plus de texte \footcite{MH_Weltbild}.

Et hop \footcite{MH_SZ}

Une derni\`ere\footcite{MH_NietzscheGott}

\printbibliography[title={Oeuvres de Martin Heidegger},keyword=MH,keyword=D] 

\end{document}

Answer 1

I think it can be done, without undue difficulty. Here's a sort of proof of concept:

\newbibmacro*{cite:seen:related}{%
 {\xifinlistcs{\thefield{crossref}}{blx@bsee@\the\c@refsection}
   {}
   {\listcsxadd{blx@bsee@\the\c@refsection}{\thefield{crossref}}}}}

\newcommand{\ifrelatedunseen}[2]{%
  \xifinlistcs{\thefield{crossref}}{blx@bsee@\the\c@refsection}
   {#2}
   {#1}}

\renewbibmacro*{cite}{%
  \usebibmacro{cite:citepages}%
  \global\togglefalse{cbx:fullcite}%
  \global\togglefalse{cbx:loccit}%
  \bibhypertarget{cite\the\value{instcount}}{%
    \ifciteseen
      {\iffieldundef{shorthand}
         {\ifciteibid
            {\usebibmacro{cite:ibid}}
            {\ifthenelse{\ifciteidem\AND\NOT\boolean{cbx:noidem}}
         {\usebibmacro{cite:idem}}
               {\usebibmacro{cite:name}}%
             \usebibmacro{cite:title}}%
          \usebibmacro{cite:save}}
         {\usebibmacro{cite:shorthand}}}
      {\ifboolexpr {
         test {\iffieldundef{crossref}}
         or not ( test {\ifentrytype{inbook}}
               or test {\ifentrytype{incollection}} ) }
       {\usebibmacro{cite:full}%
        \usebibmacro{cite:save}}
       {\ifrelatedunseen
        {\usebibmacro{cite:seen:related}%
         \usebibmacro{cite:full}%
         \usebibmacro{cite:save}}
        {\usebibmacro{related:info}}}}}}

\newbibmacro*{related:info}{%
  \usedriver{}{inbook:rel}}

\DeclareBibliographyDriver{inbook:rel}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \usebibmacro{author/translator+others}%
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{in:}%
  \usebibmacro{maintitle+booktitle}%
  \newunit%
  \bibstring{opcit}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit\newblock
  \setunit{\bibpagerefpunct}\newblock
  \usebibmacro{pageref}%
  \newunit\newblock
  \iftoggle{bbx:related}
    {\usebibmacro{related:init}%
     \usebibmacro{related}}
    {}%
  \usebibmacro{finentry}}

Basically: we modify cite so that it looks for a crossref in inbook or incollection types. If there is one uses the (ordinary) method for seeing if the crossref has been previously cited, and calls a modified macro (which in turn calls a revised driver) if it has. If the crossref not been previously cited (directly or indirectly) it calls a macro which records the citation of the crossref as if it had been cited.

It's a bit rough of course; "production" code would need to deal with (e.g)

• shorthands (as well as "op. cit"), and perhaps idem and ibid as well, but I don't see insuperable difficulties, though the cite saving mechanism would need to be modified to deal with the "note" classes.

• (perhaps) the incollection type separately from inbook (since one might want to print editors' names)

• xref fields as well as crossref (which is what I have used, since that was what was in the MWE) (and I've always found the xref mechanism rather difficulty in any event)

It does have certain merits, however: if the "main work" is cited, the citetracker picks it up automatically. And if there is a \citereset, it works as it should (i.e. we lose the op.cit.)

This code inserted (between \makeatletter ... \makeatother into the above MWE gives the following.