biblatex我在使用包（管理参考书目）和navigator包（将文件嵌入 PDF）时遇到了麻烦。以下是一个最小示例：
\documentclass[11pt,letterpaper,titlepage]{article}
\usepackage{biblatex}
\usepackage{navigator}
\addbibresource{latextest.bib}
% Just need some file here
\embeddedfile{Test}[Test.txt]{latextest.bib}
\begin{document}
Test
Test \cite{ctan}
Test
\printbibliography
\finishpdffile
\end{document}
以下是 latextest.bib 的内容：
@online{ctan,
title = "The Comprehensive TeX Archive Network",
url = "https://ctan.org/"
}
日志文件显示了几个错误：
! Undefined control sequence.
<argument> \bibname
l.11 \begin{document}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
! LaTeX Error: Missing \begin{document}.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...
l.11 \begin{document}
You're in trouble here. Try typing <return> to proceed.
If that doesn't work, type X <return> to quit.
! Too many }'s.
<argument> ...cs \bibname {\abx@str @bibliography}
l.11 \begin{document}
You've closed more groups than you opened.
Such booboos are generally harmless, so keep going.
! Too many }'s.
<argument> \letcs \refname {\abx@str @references}
l.11 \begin{document}
You've closed more groups than you opened.
Such booboos are generally harmless, so keep going.
! Undefined control sequence.
<argument> \biblistname
l.11 \begin{document}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
! Too many }'s.
<argument> ... \biblistname {\abx@str @shorthands}
l.11 \begin{document}
You've closed more groups than you opened.
Such booboos are generally harmless, so keep going.
如果注释掉与参考书目相关的命令（\usepackage{biblatex}、\addbibresource、\cite和），则编译成功。同样，如果注释掉\printbibliography与嵌入文件相关的命令（\usepackage{navigator}、\embeddedfile和），则编译也会成功。\finishpdffile
在 Ubuntu 上运行 MiKTeX 2.9.7216-x64（昨天重新安装，所有软件包都是最新的）和 TeX Live 2017.20180305-1 时都会发生这种情况。我正在使用 XeTeX 和 Biber 进行编译。
我将非常感激任何关于如何解决该问题的修复或建议。
答案1
navigator和之间确实存在根本不兼容biblatex（或者更准确地说，两者使用的 TeX 编程工具箱texapi和之间存在根本不兼容etoolbox）。
如果你将最小示例中两个包的加载顺序交换为
\usepackage{navigator}
\usepackage{biblatex}
你会得到以下错误
("C:\Program Files\MiKTeX 2.9\tex/latex/etoolbox\etoolbox.sty"
! LaTeX Error: Command \letcs already defined.
Or name \end... illegal, see p.192 of the manual.
这表明，navigator或者由 加载的包定义了也由 定义的navigator命令（需要）。\letcsetoolboxbiblatex
经过一番挖掘，我们发现texapi，由 加载的navigator已经
\long\pdef\letcs#1{\expandafter\let \csname#1\endcsname}
而etoolbox
\newrobustcmd{\letcs}[2]{%
\ifcsdef{#2}
{\expandafter\let\expandafter#1\csname#2\endcsname}
{\undef#1}}
不幸的是，这两个定义具有完全相反的“语法”。texapi的版本用作
\letcs{foo}\bar
whileetoolbox使用它的版本作为
\letcs\foo{bar}
由于该命令在两者中无处不在，navigator并且biblatex这种名称冲突使软件包几乎不兼容。如果您想让这两个软件包一起工作，您必须\letcs根据所使用的命令保存和恢复正确的版本。
在下面的 MWE 中，设置了一些东西，以便\letcs整个文档中的 的工作定义是 来自 的定义etoolbox。这意味着对于每个navigator命令，我们都需要本地重置\letcs为其texapi定义。
\documentclass[11pt,letterpaper,titlepage]{article}
\usepackage{navigator}
\let\navletcs\letcs
\let\letcs\relax
\usepackage{biblatex}
\begin{filecontents}{latextest.bib}
@online{ctan,
title = "The Comprehensive TeX Archive Network",
url = "https://ctan.org/"
}
\end{filecontents}
\addbibresource{latextest.bib}
\begingroup
\let\letcs\navletcs
\embeddedfile{Test}[Test.txt]{latextest.bib}
\endgroup
\begin{document}
Test
Test \cite{ctan}
Test
\printbibliography
\begingroup
\let\letcs\navletcs
\finishpdffile
\endgroup
\end{document}