Biblatex：如果是过去 5 年内的日期则加粗

Question

对于官方报告，我们经常被要求在参考文献部分以粗体显示我们的名称，以及过去 5 年内的出版日期。

我手动编辑了作者列表，用\baptiste我在序言中定义的宏替换了我的名字，

\newcommand{\baptiste}{\textbf{B. LastName}}

然而，对于日期，我有点困惑。

\begin{filecontents}{\jobname.bib}
@book{Labov1972,
    Address = {Philadelphia},
    Author = {William Labov},
    Publisher = {University of Pennsylvania Press},
    Title = {Sociolinguistic Patterns},
    Year = {2018}}

@book{Chomsky1957,
    Address = {The Hague},
    Author = {Noam Chomsky},
    Publisher = {Mouton},
    Title = {Syntactic Structures},
    Year = {1957}}
}
\end{filecontents}

\documentclass{article}
\usepackage[style=authoryear]{biblatex}
\addbibresource{\jobname.bib}
\begin{document}
Some famous linguists wrote a couple of books \autocite{Labov1972,Chomsky1957}.
\printbibliography
\end{document}

Answer 1

我只想回答关于日期的问题。粗体名称已在其他地方得到广泛讨论：使用 biblatex 将特定作者设为粗体。

我们可以定义一个\iflastnyears{<n>}检查字段是否year属于过去<n>（完整）年份，这样目前（即 2020 年）\iflastnyears{5}对于 2015 年到 2020 年（包括 2020 年）都成立。当然，您可以根据自己的喜好调整定义中的逻辑。

请注意，我们必须包含笨重的，\ifdateera{bce}因为biblatex不会在字段中保存年份的符号year，所以它实际上包含\abs{year}。\ifdateera{bce}对于 0 年之前的日期（因此对于负日期）是正确的。

\documentclass{article}
\usepackage[style=authoryear]{biblatex}

\makeatletter
% \year should hold the current year, but there are classes
% (and maybe packages) that redefine it :-(
\newcommand*{\iflastnyears}[1]{%
  \ifdateera{bce}
    {\@secondoftwo}
    {\iffieldint{year}
       {\ifnumgreater{\thefield{year}}{\year-#1-1}}
       {\@secondoftwo}}}
\makeatother

\DeclareFieldFormat{date}{%
  \iflastnyears{5}
    {\mkbibbold{#1}}
    {#1}%
}

\begin{filecontents}{\jobname.bib}
@book{Labov2018,
  Address   = {Philadelphia},
  Author    = {William Labov},
  Publisher = {University of Pennsylvania Press},
  Title     = {Sociolinguistic Patterns},
  Year      = {2018},
}
@book{Chomsky1957,
  Address   = {The Hague},
  Author    = {Noam Chomsky},
  Publisher = {Mouton},
  Title     = {Syntactic Structures},
  Year      = {1957},
}
\end{filecontents}
\addbibresource{\jobname.bib}

\begin{document}
Some famous linguists wrote a couple of books \autocite{Labov2018,Chomsky1957}.
\printbibliography
\end{document}

如果你还想突出显示引用中的年份，请添加

\DeclareFieldFormat{labeldate}{%
  \ifboolexpr{test {\iflabeldateisdate} and test {\iflastnyears{5}}}
    {\mkbibbold{#1}}
    {#1}%
}