使用 polyglossia 自定义 biblatex 标题样式时出现不需要的额外空间

Question

我正在重新定义“title”bibmacro，以便包含作品的原始标题。正如这里所见，它有时有效，有时无效。如果不明显的话，第二个条目的括号后有很多奖励空间。

以下是生成此图像的我的 MWE：

\documentclass[varwidth,border=0.2in]{standalone}

\RequireXeTeX
\usepackage{polyglossia}

\setmainlanguage{english}
\setotherlanguages{czech,spanish}

\usepackage[backend=biber,bibstyle=standard]{biblatex}

\renewbibmacro*{title}{%
  \printtext[title]{%
    \printfield[titlecase]{title}%
    \iffieldundef{subtitle}%
      {}%
      {\setunit{\addcolon\addspace}\printfield[titlecase]{subtitle}}%
    \iffieldundef{origtitle}%
      {}%
      {\setunit{\addspace}\printtext[brackets]{\printfield{origtitle}}}}%
  \newunit}

\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@book{Grusa,
  Author = {Jiří Gruša},
  Location = {New York},
  Origlanguage = {czech},
  Origtitle = {\textczech{Dotazník, aneb modlitba za jedno město a přítele}},
  Publisher = {Farrar Straus Giroux},
  Title = {The Questionnaire, or Prayer for a Town and a Friend},
  Translator = {Peter Kussi},
  Year = {1982}}

@book{Cortazar:Fires,
  Author = {Julio Cortázar},
  Location = {New York},
  Origlanguage = {spanish},
  Origtitle = {\textspanish{Todos los fuegos el fuego}},
  Publisher = {Pantheon Books},
  Title = {All Fires the Fire and Other Stories},
  Translator = {Suzanne Jill Levine},
  Year = {1973}}
\end{filecontents}

\addbibresource{\jobname.bib}

\begin{document}
\nocite{*}
\printbibliography[heading = none]
\end{document}

根据我目前的情况，我不知道奖励空间从何而来。我坦白承认，我不知道这是否是实现我想要实现的目标的最佳方式，因此，如果有更好的方法，请告诉我。

Answer 1

正如 barbara beeton 所怀疑的以及 Ulrike Fischer 所提到的，问题是由于的捷克语模块%中缺少 s而导致的一些虚假空格。无需polyglossiabiblatex

\documentclass{article}

\usepackage{polyglossia}
\setmainlanguage{english}
\setotherlanguages{czech,spanish}

\begin{document}
A\textczech{B}C

A\textspanish{B}C
\end{document}

此类问题应报告给polyglossia维护人员。他们通常会很快处理这些问题。我报告了这个问题https://github.com/reutenauer/polyglossia/issues/423（该问题在报告后不久就得到了修复，应该会在下一个polyglossia版本中修复，如果紧急情况下，可以.ldf从以下位置获取文件https://github.com/reutenauer/polyglossia/commit/e088311159a5db2403d2ed672eaf42c0a74a24fd并将它们用作有故障文件的直接替代品）。

作为一种快速解决方法，您可以将选项设置polyglossia-czech为vlna。false您很可能不想在包含大量捷克语文本的文档中这样做，但如果只有简短的捷克语段落，那么这样做可能没问题。

\documentclass{article}

\usepackage{polyglossia}
\setmainlanguage{english}
\setotherlanguage[vlna=false]{czech}
\setotherlanguage{spanish}

\begin{document}
A\textczech{B}C

A\textspanish{B}C
\end{document}

---

为了让这个答案包含一些有趣的东西，这里有一个根据值\text<language>自动添加的解决方案（参见origtitleoriglanguagehttps://github.com/plk/biblatex/issues/594）。

\documentclass{article}

\usepackage{polyglossia}
\setmainlanguage{english}
\setotherlanguage[vlna=false]{czech}% TEMPORARY workaround
% for https://github.com/reutenauer/polyglossia/issues/423
\setotherlanguage{spanish}

\usepackage[backend=biber]{biblatex}

\renewcommand*{\subtitlepunct}{\addcolon\space}

\DeclareFieldFormat{origtitle:origlang:polyglossia}{%
  \iflistundef{origlanguage}
    {#1}
    {\ifcsundef{text\thefirstlistitem{origlanguage}}
       {\PackageWarning{biblatex}{%
          No language switching for
          \thefirstlistitem{origlanguage}}%
        #1}
       {\csuse{text\thefirstlistitem{origlanguage}}{#1}}}}

\renewbibmacro*{title}{%
  \printtext[title]{%
    \printfield[titlecase]{title}%
    \iffieldundef{subtitle}%
      {}%
      {\setunit{\subtitlepunct}%
       \printfield[titlecase]{subtitle}}%
    \iffieldundef{origtitle}%
      {}%
      {\setunit{\addspace}%
       \printtext[brackets]{\printfield[origtitle:origlang:polyglossia]{origtitle}}}}%
  \newunit}

\begin{filecontents}{\jobname.bib}
@book{Grusa,
  Author       = {Jiří Gruša},
  Location     = {New York},
  Origlanguage = {czech},
  Origtitle    = {Dotazník, aneb modlitba za jedno město a přítele},
  Publisher    = {Farrar Straus Giroux},
  Title        = {The Questionnaire, or Prayer for a Town and a Friend},
  Translator   = {Peter Kussi},
  Year         = {1982},
}
@book{Cortazar:Fires,
  Author       = {Julio Cortázar},
  Location     = {New York},
  Origlanguage = {spanish},
  Origtitle    = {Todos los fuegos el fuego},
  Publisher    = {Pantheon Books},
  Title        = {All Fires the Fire and Other Stories},
  Translator   = {Suzanne Jill Levine},
  Year         = {1973},
}
\end{filecontents}

\addbibresource{\jobname.bib}

\begin{document}
\nocite{*}
\printbibliography[heading = none]
\end{document}