按关键字将符号添加到 biblatex-chicago 书目中

Question

继这个问题，我想在参考书目中选定的条目前面添加一个符号。但我想匹配功能这里根据.bbl文件中的关键字自动插入符号。

我可以通过取消注释 MWE 中手动完成该作业的两行来实现所需的输出：

如果我可以使用关键字，我的工作流程将会更加高效。

据我所知，尽管我试图遵循上述链接中的逻辑，但这个 MWE 并未承认asterisk该领域的存在：keywords

\documentclass[american]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\usepackage{babel}
\usepackage{csquotes}
\usepackage[backend=biber,
  bibencoding=utf8]{biblatex-chicago}

\begin{filecontents*}{\jobname.bib}
@book{uthor,
  author        = {Uthor, Arnold},
  title         = {A Book},
  date          = {2013},
  location      = {Place},
  publisher     = {P. Ublisher's \& Co.},
  keywords      = {asterisk}
}
\end{filecontents*}
\addbibresource{\jobname.bib}

%\DeclareBibliographyCategory{asterisk}

\renewbibmacro*{bibindex}{%
  \ifbibindex
    {\indexnames{labelname}%
     \indexfield{indextitle}}
    {}
  \ifcategory{asterisk}%
    {*}%
    {}%
}

\begin{document}
%  \addtocategory{asterisk}{uthor}
  \cite{uthor}
  \printbibliography
\end{document}

请问有人能告诉我我哪里错了吗？

Answer 1

我看到的解决方案是使用测试。在类似情况下\ifkeyword我更喜欢使用：xpatch

\usepackage{xpatch}
\AtEveryBibitem{\ifkeyword{asterisk}%
 {\xapptobibmacro{bibindex}{*}{}{}}
 {}}

但如果你愿意，你也可以不用它：

\renewbibmacro*{bibindex}{%
 \ifbibindex
 {\indexnames{labelname}%
  \indexfield{indextitle}}
 {}
\ifkeyword{asterisk}{*}{}%
}

平均能量损失

\documentclass[american]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\usepackage{babel}
\usepackage{csquotes}
\usepackage[backend=biber,
bibencoding=utf8]{biblatex-chicago}

\begin{filecontents*}{\jobname.bib}
 @book{uthor,
  author        = {Uthor, Arnold},
  title         = {A Book},
  date          = {2013},
  location      = {Place},
  publisher     = {P. Ublisher's \& Co.},
  keywords      = {asterisk}
 }
\end{filecontents*}
\addbibresource{\jobname.bib}
\addbibresource{biblatex-examples.bib}
    
\usepackage{xpatch}
\xapptobibmacro{bibindex}{\ifkeyword{asterisk}{*}{}}{}{}

\begin{document}
 
 \paragraph{An entry with “asterisk” keyword}
 \cite{uthor}
 
 \paragraph{An entry without “asterisk” keyword} 
 \cite{knuth:ct}
 
 \printbibliography

\end{document}