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无法访问已保存的内容在 \entrydata* 内

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无法访问已保存的内容在 \entrydata* 内

尝试循环遍历已修改set驱动程序中的子条目，我得到了我无法理解biblatex的行为。\entrydata*

打电话时

  \renewcommand{\do}[1]{%
    \message{^^Jxset Warning: inside loop for ##1^^J}%
    \entrydata*{##1}{\message{^^Jxset Warning: entrydata check loop run for entrykey=\thefield{entrykey} with savedentrykey=\thefield{savedentrykey}^^J}}}%
  \edef\xset@tempa{\thefield{entryset}}\expandafter\docsvlist\expandafter{\xset@tempa}%

在驱动程序中我得到

xset Warning: inside loop for A:V1
xset Warning: entrydata check loop run for entrykey=A:V1 with savedentrykey=
xset Warning: inside loop for A:V2
xset Warning: entrydata check loop run for entrykey=A:V2 with savedentrykey=

savedentrykey据我了解，它应该在哪里A并且不为空。

甚至

  \entryset{\message{^^Jxset Warning: entryset pre code executed^^Jentrykey=\thefield{entrykey} savedentrykey=\thefield{savedentrykey}}}
           {\message{^^Jxset Warning: entryset post code executed^^Jentrykey=\thefield{entrykey} savedentrykey=\thefield{savedentrykey}}}%

不起作用（可能应该起作用？）......

知道我错过了什么吗？

梅威瑟：

\documentclass{article}
\usepackage[ansinew]{inputenc}
\usepackage[ngerman]{babel}
\usepackage[babel,german=quotes]{csquotes}
\usepackage[doi=false,defernumbers=true,backend=biber,subentry,sorting=nyt,sortsets=true,style=numeric-comp]{biblatex}
\usepackage{xpatch}

\newlinechar=`\^^J

\makeatletter
\begin{filecontents}{\jobname.bib}
@Set{A,
  entryset    = {A:V1,A:V2,A:V3},
}
@Book{A:V1,
  author      = {Rene Goscinny and Albert Uderzo},  title       = {Asterix der Gallier},
  maintitle   = {Asterix und Obelix},               sorttitle   = {Asterix und Obelix 01},
  year        = {1959},                             isbn        = {1234567890123},
  publisher   = {Dargaud},                          location    = {Paris},
  volume      = {1},
}
@Book{A:V2,
  author      = {Rene Goscinny and Albert Uderzo},  title       = {Asterix und Kleopatra},
  maintitle   = {Asterix und Obelix},               sorttitle   = {Asterix und Obelix 02},
  year        = {1968},                             isbn        = {2345678901234},
  publisher   = {Dargaud},                          location    = {Paris},
  volume      = {2},
}
@Book{A:V3,
  author      = {Rene Goscinny and Albert Uderzo},  title       = {Asterix als Gladiator},
  maintitle   = {Asterix und Obelix},               sorttitle   = {Asterix und Obelix 03},
  year        = {1969},                             isbn        = {3456789012345},
  publisher   = {Dargaud},                          location    = {Paris},
  volume      = {3},
}
\end{filecontents}

\DeclareBibliographyDriver{set}{%
  \message{^^Jxset Warning: entering set driver^^Jentrykey=\thefield{entrykey} savedentrykey=\thefield{savedentrykey}^^J}%
  \renewcommand{\do}[1]{%
    \message{^^Jxset Warning: inside loop for ##1^^J}%
    \entrydata*{##1}{\message{^^Jxset Warning: entrydata check loop run for entrykey=\thefield{entrykey} with savedentrykey=\thefield{savedentrykey}^^J}}}%
  \edef\xset@tempa{\thefield{entryset}}\expandafter\docsvlist\expandafter{\xset@tempa}%
  \entryset{\message{^^Jxset Warning: entryset pre code executed^^Jentrykey=\thefield{entrykey} savedentrykey=\thefield{savedentrykey}}}
           {\message{^^Jxset Warning: entryset post code executed^^Jentrykey=\thefield{entrykey} savedentrykey=\thefield{savedentrykey}}}%
  \newunit\newblock
  \usebibmacro{setpageref}%
  \finentry}
\makeatother

\addbibresource{\jobname.bib}

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

问题Biblatex - 如何使用“\entrydata*”访问“saveddate”？可能相关...

答案1

biblatex3.11 之前的版本中有一个错误，会导致\entrydata*无法保存entrykey，因此savedentrykey会是空的。这个问题是在以下时间发现并修复的：Biblatex - 如何使用“\entrydata*”访问“saveddate”？已解决（见https://github.com/plk/biblatex/pull/684尤其是此评论）。

使用当前的biblatex3.12，我得到

xset Warning: entrydata check loop run for entrykey=A:V1 with savedentrykey=A

从\entrydata*代码和

xset Warning: entryset pre code executed
entrykey=A:V1 savedentrykey=

xset Warning: entryset post code executed
entrykey=A:V1 savedentrykey=

从\setentry循环中。

这是预期的输出：\setentry不保存其“父”数据。默认情况下，@set它只是其子条目的容器。它没有自己的有用数据。它拥有的唯一数据是为了排序目的，其他所有内容都包含在子项本身中。

如果您只想访问“父”集名称，则可以使用该字段，entryset如下所示

  \entryset{\message{^^Jxset Warning: entryset pre code executed^^Jentrykey=\thefield{entrykey} savedentrykey=\thefield{savedentrykey}, entryset=\thefield{entryset}}}
           {\message{^^Jxset Warning: entryset post code executed^^Jentrykey=\thefield{entrykey} savedentrykey=\thefield{savedentrykey}, entryset=\thefield{entryset}}}%

然后会给出

xset Warning: entryset pre code executed
entrykey=A:V1 savedentrykey=, entryset=A

xset Warning: entryset post code executed
entrykey=A:V1 savedentrykey=, entryset=A

并且适用于所有@set子级，无需额外命令。

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