csquotes 的法语 guillemets 在 hyperref 的 \href 参数中与 (pdf|lua)latex 意外出现

Question

在以下 MWE 中，依靠csquotes，"用作打印外部引号的引号，并使用法语 guillemets 作为输出。

\documentclass[french]{article}
\usepackage[T1]{fontenc}
\usepackage[french=guillemets*]{csquotes}
\usepackage{babel}
\usepackage{hyperref}

\MakeOuterQuote{"}

\begin{document}
\begin{itemize}
\item Proper French guillemets: "Foo", \textbf{"Foo"}.
\item (Un)Proper French guillemets: \href{https://foo.org}{"Foo"}.
\end{itemize}
\end{document}

当用 处理时xelatex，它会给出预期的结果：

— 正确的法语 guillemets ：“Foo”，“Foo”。

— （不）正确的法语 guillemets ：“Foo”。

但是，当用pdflatex或处理时lualatex，它会产生意想不到的结果：

— 正确的法语 guillemets ：“Foo”，“Foo”。

— （不）正确的法语 guillemets：“Foo”。

你明白发生了什么事吗？

（更新 TeX Live 2023 时遇到此问题：

 *File List*
 article.cls    2023/05/17 v1.4n Standard LaTeX document class
  size10.clo    2023/05/17 v1.4n Standard LaTeX file (size option)
 fontenc.sty    2021/04/29 v2.0v Standard LaTeX package
csquotes.sty    2022-09-14 v5.2n context-sensitive quotations (JAW)
etoolbox.sty    2020/10/05 v2.5k e-TeX tools for LaTeX (JAW)
  keyval.sty    2022/05/29 v1.15 key=value parser (DPC)
csquotes.def    2022-09-14 v5.2n csquotes generic definitions (JAW)
csquotes.cfg    
   babel.sty    2023/10/25 v3.96 The Babel package
  french.ldf    2023/03/08 v3.5q French support from the babel system
babel-french.tex
scalefnt.sty    
hyperref.sty    2023-10-21 v7.01c Hypertext links for LaTeX
 ltxcmds.sty    2020-05-10 v1.25 LaTeX kernel commands for general use (HO)
   iftex.sty    2022/02/03 v1.0f TeX engine tests
pdftexcmds.sty    2020-06-27 v0.33 Utility functions of pdfTeX for LuaTeX (HO)
infwarerr.sty    2019/12/03 v1.5 Providing info/warning/error messages (HO)
kvsetkeys.sty    2022-10-05 v1.19 Key value parser (HO)
kvdefinekeys.sty    2019-12-19 v1.6 Define keys (HO)
pdfescape.sty    2019/12/09 v1.15 Implements pdfTeX's escape features (HO)
 hycolor.sty    2020-01-27 v1.10 Color options for hyperref/bookmark (HO)
letltxmacro.sty    2019/12/03 v1.6 Let assignment for LaTeX macros (HO)
 auxhook.sty    2019-12-17 v1.6 Hooks for auxiliary files (HO)
 nameref.sty    2023-10-05 v2.54 Cross-referencing by name of section
refcount.sty    2019/12/15 v3.6 Data extraction from label references (HO)
gettitlestring.sty    2019/12/15 v1.6 Cleanup title references (HO)
kvoptions.sty    2022-06-15 v3.15 Key value format for package options (HO)
  pd1enc.def    2023-10-21 v7.01c Hyperref: PDFDocEncoding definition (HO)
 intcalc.sty    2019/12/15 v1.3 Expandable calculations with integers (HO)
   puenc.def    2023-10-21 v7.01c Hyperref: PDF Unicode definition (HO)
     url.sty    2013/09/16  ver 3.4  Verb mode for urls, etc.
  bitset.sty    2019/12/09 v1.3 Handle bit-vector datatype (HO)
bigintcalc.sty    2019/12/15 v1.5 Expandable calculations on big integers (HO)
atbegshi-ltx.sty    2021/01/10 v1.0c Emulation of the original atbegshi
package with kernel methods
 hpdftex.def    2023-10-21 v7.01c Hyperref driver for pdfTeX
atveryend-ltx.sty    2020/08/19 v1.0a Emulation of the original atveryend packa
ge
with kernel methods
rerunfilecheck.sty    2022-07-10 v1.10 Rerun checks for auxiliary files (HO)
uniquecounter.sty    2019/12/15 v1.4 Provide unlimited unique counter (HO)
l3backend-pdftex.def    2023-10-23 L3 backend support: PDF output (pdfTeX)
    test.out
    test.out
 ***********

）

Answer 1

那么你可以尝试\Hy@safe@activestrue从 中删除\hyper@chars。由于现在几乎所有活跃角色都受到保护，所以可能不需要这样做。

但请注意，您无法在书签中获得正确的引号。我个人不会使用"引号（例如，它会与德语简写冲突）。另请参阅https://tex.stackexchange.com/a/472729/2388

\documentclass[french]{article}
\usepackage[T1]{fontenc}
\usepackage[french=guillemets*]{csquotes}
\usepackage{babel}
\usepackage{hyperref}

\MakeOuterQuote{"}
\makeatletter
\renewcommand*\hyper@chars{%
  \let\#\hyper@hash
  \let\%\@percentchar
  %  \Hy@safe@activestrue
}
\makeatother

\begin{document}
\section{"Foo"}
\begin{itemize}
\item Proper French guillemets: "Foo", \textbf{"Foo"}.
\item (Un)Proper French guillemets: \href{https://foo.org}{"Foo"}.  

\end{itemize}

\end{document}