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BibLaTeX：如何删除@thesis 条目中“school”后面的逗号？

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BibLaTeX：如何删除@thesis 条目中“school”后面的逗号？

我想删除@thesis 书目条目中“学校”字段和日期（年份）之间的逗号：

这是我的最小示例代码：

\documentclass{minimal}

\usepackage{ngerman}
\usepackage[backend = biber, style = numeric]{biblatex}

%%%%%%%% https://tex.stackexchange.com/a/492917

\newtoggle{bbx:datemissing}

\renewbibmacro*{date}{\toggletrue{bbx:datemissing}%}

\renewbibmacro{volume+number+eid}{%
  \printfield{volume}%
  \setunit{\addcomma\space}%
  \printfield{eid}}

\renewbibmacro*{issue+date}{%
  \toggletrue{bbx:datemissing}%
  \iffieldundef{issue}{}{
    \printtext[parens]{%
    \printfield{issue}}}%
  \newunit}

\newbibmacro*{date:print}{%
  \togglefalse{bbx:datemissing}%
  \printdate}

\renewbibmacro*{chapter+pages}{%
  \printfield{chapter}%
  \setunit{\bibpagespunct}%
  \printfield{pages}%
  \newunit
  \usebibmacro{date:print}%
  \newunit}

\renewbibmacro*{note+pages}{%
  \printfield{note}%
  \setunit{\bibpagespunct}%
  \printfield{pages}%
  \newunit
  \usebibmacro{date:print}%
  \newunit}

%%%%%%%%

%%% This is what I came up with
\renewbibmacro{institution+location+date}{%
  \printlist{location}%
  \iflistundef{institution}{%
    \setunit*{\space}%
  }{%
    \setunit*{\addcolon\space}%
  }%
  \printlist{institution}%
  \setunit*{\space}%
  \usebibmacro{date}%
  \newunit%
}

\usepackage{filecontents}
\begin{filecontents*}{lit.bib}
  @thesis {mythesis,
    author = {Me, I.},
    school = {University},
    title = {Sometitle},
    type = {Phd thesis},
    year = {123}
  }  
\end{filecontents*}

\addbibresource{lit.bib}

\begin{document}
\printbibliography
\end{document}
\nocite{*}

我已经尝试过了\renewbibmacro{institution+location+date}{...}，但是没有用。我对 BibLaTeX 还不太熟悉。

我的想法是，样式numeric使用了 中的条目类型standard，我从中复制了宏并删除了所有逗号。但是，这显然不起作用。我该如何删除这个逗号？

答案1

您可以在重新定义的宏的\nopunct前面添加。我已将示例的文档类更改为。尽管名称如此，但文档类应该\newunitinstitution+location+datearticleminimal不是因为它实际上太小了，所以不用于 MWE。我还删除了该filecontents包，它现在是 LaTeX 内核的一部分。

\documentclass{article}

\usepackage{ngerman}
\usepackage[backend = biber, style = numeric]{biblatex}

\newtoggle{bbx:datemissing}

\renewbibmacro*{date}{\toggletrue{bbx:datemissing}}

\renewbibmacro{volume+number+eid}{%
  \printfield{volume}%
  \setunit{\addcomma\space}%
  \printfield{eid}}

\renewbibmacro*{issue+date}{%
  \toggletrue{bbx:datemissing}%
  \iffieldundef{issue}{}{
    \printtext[parens]{%
    \printfield{issue}}}%
  \newunit}

\newbibmacro*{date:print}{%
  \togglefalse{bbx:datemissing}%
  \printdate}

\renewbibmacro*{chapter+pages}{%
  \printfield{chapter}%
  \setunit{\bibpagespunct}%
  \printfield{pages}%
  \newunit
  \usebibmacro{date:print}%
  \newunit}

\renewbibmacro*{note+pages}{%
  \printfield{note}%
  \setunit{\bibpagespunct}%
  \printfield{pages}%
  \newunit
  \usebibmacro{date:print}%
  \newunit}
%%% This is what I came up with
\renewbibmacro{institution+location+date}{%
  \printlist{location}%
  \iflistundef{institution}{%
    \setunit*{\space}%
  }{%
    \setunit*{\space}%
  }%
  \printlist{institution}%
  \setunit*{\space}%
  \usebibmacro{date}%
  \nopunct\newunit%
}

\begin{filecontents*}[overwrite]{\jobname.bib}
  @thesis {mythesis,
    author = {Me, I.},
    school = {University of Somewhere},
    title = {Sometitle},
    type = {Phd thesis},
    year = {1980}
  }  
\end{filecontents*}

\addbibresource{\jobname.bib}

\begin{document}
\nocite{*}
\printbibliography
\end{document}

代码输出

答案2

答案更改 Biblatex 中的页面和年份的顺序，您正在使用的代码，使用相当钝的工具将date打印移到之后pages。这可能并非您在所有情况下都想要或需要的。

pages这是一个稍微复杂一些的设置，只有当有（或）时才移动日期chapter，这可能会导致在某些情况下输出的效果稍微好一些。

\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage[backend=biber, style=numeric]{biblatex}

\newtoggle{bbx:datesuppressed}

\renewbibmacro*{date}{%
  \ifboolexpr{
        test {\iffieldundef{pages}}
    and test {\iffieldundef{chapter}}}
    {\printdate}
    {\toggletrue{bbx:datesuppressed}}}

\renewbibmacro{volume+number+eid}{%
  \printfield{volume}%
  \setunit{\addcomma\space}%
  \printfield{eid}}

\renewbibmacro*{issue+date}{%
  \toggletrue{bbx:datesuppressed}%
  \iffieldundef{issue}
    {}
    {\printtext[parens]{%
       \printfield{issue}}}%
  \newunit}

\newbibmacro*{date:print}{%
  \iftoggle{bbx:datesuppressed}
    {\togglefalse{bbx:datesuppressed}%
     \printdate}
    {}}

\renewbibmacro*{chapter+pages}{%
  \printfield{chapter}%
  \setunit{\bibpagespunct}%
  \printfield{pages}%
  \newunit
  \usebibmacro{date:print}%
  \newunit}

\renewbibmacro*{note+pages}{%
  \printfield{note}%
  \setunit{\bibpagespunct}%
  \printfield{pages}%
  \newunit
  \usebibmacro{date:print}%
  \newunit}

\renewbibmacro{institution+location+date}{%
  \printlist{location}%
  \iflistundef{institution}
    {\setunit*{\space}}
    {\setunit*{\addcolon\space}}%
  \printlist{institution}%
  \setunit*{\space}%
  \usebibmacro{date}%
  \newunit
}

\begin{filecontents*}{\jobname.bib}
@phdthesis{mythesis,
  author = {Me, I.},
  school = {University},
  title  = {Sometitle},
  year   = {123},
}  
\end{filecontents*}
\addbibresource{\jobname.bib}
\addbibresource{biblatex-examples.bib}

\begin{document}
\nocite{mythesis,sigfridsson,westfahl:space}
\printbibliography
\end{document}

我。“Sometitle”。博士论文。大学 123。

正如艾伦在他的答案下的评论中所解释的那样，biblatex的标点符号处理是异步的：标点符号存储在缓冲区中，仅在需要时打印（即，当下一条\print...命令实际打印某些内容时）。由于在问题中的代码中，\usebibmacro{date}ininstitution+location+date实际上并不打印日期，因此before 最终并不控制日期之前的标点符号。日期仅由in \setunit打印，此时其他命令将不同的标点符号添加到缓冲区中。date:printchapter+pages\setunit

\nopunct设置永久标记，在命令打印新内容/文本之前不打印任何标点符号\print...。在这种情况下，它有助于抑制不需要的句号。由于\nopunct可以在标点符号跟踪器内部和外部使用，因此它是一个调整标点符号的方便工具，但我通常会尽量避免使用它，并且更喜欢不使用它的解决方案，因为它可能会产生超出预期的效果。

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