
考慮以下:
\documentclass{article}
\usepackage[backend=bibtex8]{biblatex}
\begin{filecontents*}{bib.bib}
@mastersthesis{toto,
author={Toto},
title={My thesis},
year={2009},
school={Paris 129},
keywords={mem}
}
\end{filecontents*}
\addbibresource{bib.bib}
\newtoggle{display}
\toggletrue{display}
\begin{document}
\nocite{*}
\printbibliography[\iftoggle{display}{keyword=mem}{notkeyword=mem}]
\togglefalse{display}
\printbibliography[\iftoggle{display}{keyword=mem}{notkeyword=mem}]
\end{document}
我期望的行為是,根據切換的值display
,帶有關鍵字的條目mem
是否會顯示。
然而,我得到的只是! Package keyval Error: keyword=mem undefined.
和 ! Package keyval Error: notkeyword=mem undefined.
錯誤。
答案1
您必須先展開可選參數才能\printbibliography
看到它:
\begin{filecontents*}{\jobname.bib}
@mastersthesis{toto,
author={Toto},
title={My thesis},
year={2009},
school={Paris 129},
keywords={mem}
}
@mastersthesis{toto2,
author={Toto},
title={My thesis not mem},
year={2009},
school={Paris 129},
keywords={notmem}
}
\end{filecontents*}
\documentclass{article}
\usepackage[backend=bibtex8]{biblatex}
\addbibresource{\jobname.bib}
\newtoggle{display}
\toggletrue{display}
\begin{document}
\nocite{*}
\begingroup\edef\x{\endgroup\noexpand
\printbibliography[\iftoggle{display}{keyword=mem}{notkeyword=mem}]%
}\x
\togglefalse{display}
\begingroup\edef\x{\endgroup\noexpand
\printbibliography[\iftoggle{display}{keyword=mem}{notkeyword=mem}]%
}\x
\end{document}
可以獲得更友善的介面xparse
\begin{filecontents*}{\jobname.bib}
@mastersthesis{toto,
author={Toto},
title={My thesis},
year={2009},
school={Paris 129},
keywords={mem}
}
@mastersthesis{toto2,
author={Toto},
title={My thesis not mem},
year={2009},
school={Paris 129},
keywords={notmem}
}
\end{filecontents*}
\documentclass{article}
\usepackage[backend=bibtex8]{biblatex}
\usepackage{xparse}
\addbibresource{\jobname.bib}
\newtoggle{display}
\toggletrue{display}
\ExplSyntaxOn
\NewDocumentCommand{\xprintbibliography}{o}
{
\IfNoValueTF{#1}
{
\printbibliography
}
{
\clement_xprintbibliography:x { #1 }
}
}
\cs_new_protected:Npn \clement_xprintbibliography:n #1
{
\printbibliography[#1]
}
\cs_generate_variant:Nn \clement_xprintbibliography:n { x }
\ExplSyntaxOff
\begin{document}
\nocite{*}
\xprintbibliography[\iftoggle{display}{keyword=mem}{notkeyword=mem}]%
\togglefalse{display}
\xprintbibliography[\iftoggle{display}{keyword=mem}{notkeyword=mem}]%
\end{document}
答案2
由於我仍然不明白的原因,可以讓keyword
/notkeyword
依賴切換開關。
為了便於閱讀,我將 附加\iftoggle{display}{keyword}{notkeyword}
為新命令(etiquette
,在法語中表示“標籤”),但這不是強制性的。
\documentclass{article}
\usepackage[backend=bibtex8, defernumbers=true]{biblatex}
\begin{filecontents*}{bib.bib}
@mastersthesis{toto1,
author={Toto},
title={My thesis},
year={2009},
school={Paris 129},
keywords={mem}
}
@mastersthesis{toto2,
author={Toto},
title={My new thesis},
year={2015},
school={Paris 32},
}
\end{filecontents*}
\addbibresource{bib.bib}
\newtoggle{display}
\toggletrue{display}
\newcommand{\etiquette}{\iftoggle{display}{keyword}{notkeyword}}
\begin{document}
\nocite{*}
\printbibliography[\etiquette=mem, title={With mem keyword}]
\togglefalse{display}
\printbibliography[\etiquette=mem, title={With\emph{out} mem keyword}]
\end{document}
編譯時不發出警告,並給予預期的結果:
令人驚訝的是,反過來,即
\newcommand{\etiquette}{\iftoggle{display}{mem}{bubu}}
...
\printbibliography[notkeyword=\etiquette, title={Without mem keyword}]
\togglefalse{display}
\printbibliography[notkeyword=\etiquette, title={Without bubu keyword}]
...
不起作用(沒有警告,但每次都會引用所有內容)。