如何以普通字体显示直引号？

Question

从此代码中：

\subsubsection{General Escaping Format}
Generally, escaping MUST be done in a manner similar to most programming
languages, such as C, C++, Java, or similar, for quoted string escapes. Such an
escaping scheme is defined by three characters: a starting delimiter, a
termination delimiter, and an escape character. For instance, in C, the starting
delimiter is the quote mark, ", the ending delimiter is also a quote
mark ", and the escape character is the backslash \textbackslash.

XeTeX 给出了这样的结果：

特别注意，我希望将引号转换为原始 C 样式"字符，并将其转换为一对右花括号。当然，我在本节中讨论的是编程语言，因此我需要将引号显示为打字机样式的直引号。如果我使用，我可以强制使用直引号\verb，但这会导致引号看起来很奇怪，因为实际字体不同。

Answer 1

您可以\textquotedbl使用

\usepackage[T1]{fontenc}% http://ctan.org/pkg/fontenc

以下是输出结果：

\documentclass{article}
\usepackage[T1]{fontenc}% http://ctan.org/pkg/fontenc
\begin{document}
\setcounter{section}{3}\setcounter{subsection}{1}% Just for this example
\subsubsection{General Escaping Format}
Generally, escaping MUST be done in a manner similar to most programming
languages, such as C, C++, Java, or similar, for quoted string escapes. Such an
escaping scheme is defined by three characters: a starting delimiter, a
termination delimiter, and an escape character. For instance, in C, the starting
delimiter is the quote mark, \textquotedbl, the ending delimiter is also a quote
mark \textquotedbl, and the escape character is the backslash \textbackslash.
\end{document}

Answer 2

问题在于Ligatures=TeX当您说仅

\usepackage{fontspec}

因此使用拉丁现代字体。如果你重新定义字体没有选项，则输入"将给出直引号。因此

\usepackage{fontspec}
\setmainfont{Latin Modern Roman}

但是，如果你想保留其他“传统连字符”，你可以复制text-tex.map，调用它text-tex-sq.map（例如），然后将其修改为

; TECkit mapping for TeX input conventions <-> Unicode characters

LHSName "TeX-text"
RHSName "UNICODE"

pass(Unicode)

; ligatures from Knuth's original CMR fonts
U+002D U+002D                   <>      U+2013  ; -- -> en dash
U+002D U+002D U+002D    <>      U+2014  ; --- -> em dash

U+0027                  <>      U+2019  ; ' -> right single quote
U+0027 U+0027   <>      U+201D  ; '' -> right double quote
;U+0022                   >      U+201D  ; " -> right double quote ; no change!

U+0060                  <>      U+2018  ; ` -> left single quote
U+0060 U+0060   <>      U+201C  ; `` -> left double quote

U+0021 U+0060   <>      U+00A1  ; !` -> inverted exclam
U+003F U+0060   <>      U+00BF  ; ?` -> inverted question

; additions supported in T1 encoding
U+002C U+002C   <>      U+201E  ; ,, -> DOUBLE LOW-9 QUOTATION MARK
U+003C U+003C   <>      U+00AB  ; << -> LEFT POINTING GUILLEMET
U+003E U+003E   <>      U+00BB  ; >> -> RIGHT POINTING GUILLEMET

编译teckit_compile tex-text-sq.map并保存text-text-sq.tec将生成的文件与您的文件放在同一目录中：现在调用

\usepackage{fontspec}
\setmainfont[Mapping=tex-text-sq]{Latin Modern Roman}

将提供“传统连字符”，但保持直双引号笔直。

Answer 3

加载字体规格后立即重置字体功能。

\usepackage{fontspec}
\defaultfontfeatures[\rmfamily,\sffamily,\ttfamily]{}