Dear Pandoc community,

I have encountered two issues regarding Pandoc's handling of quotation 
marks in cases where Japanese and English texts are mixed.

I am using Pandoc version 3.1.2 on macOS 12.6.3, and I can reproduce these 
issues. If these are indeed bugs, I am planning to submit them as issues on 
GitHub. However, I would appreciate any guidance if these issues arise from 
my incorrect usage.


*Issue 1: Conversion of English phrases within Japanese text*
I have observed the following issue. "input.md" is the input file, and 
"input.tex" is the output file.

$ pandoc input.md -o input.tex

input.md:
その人は"Hello, world!"と言いました。

input.tex:
その人は''Hello, world!{}``と言いました。

However, the conversion is correct when spaces are added before and after 
the double quotation marks.

input.md:
その人は "Hello, world!" と言いました。

input.tex:
その人は ``Hello, world!'' と言いました。


*Issue 2: The quotation marks are treated as Japanese text*

When converting with Pandoc, the quotation marks are treated as Japanese 
text, resulting in an unnaturally wide gap. I have confirmed this using two 
files, "preamble.tex" and "input.md," and specifying as follows:

$ pandoc input.md -o input.pdf --pdf-engine=xelatex -H preamble.tex.

preamble.tex:
\usepackage{fontspec}

\setmainfont{Georgia}
\setjamainfont{BIZ UDMincho Medium}


input.md:
---
documentclass: bxjsarticle
classoption: pandoc
papersize: a4
fontsize: 10pt
---

# はじめに

その人は "Hello, world!" と言いました。

That person said, "Hello, world!"

[image: pandoc test 2023-04-10 8.47.43.png]

In contrast, when I directly write the content in TeX and output it using $ 
xelatex test.tex, the quotation marks are treated as English text, and the 
expected output is obtained.

test.tex:
\documentclass[a4paper,xelatex,ja=standard]{bxjsarticle}

\usepackage{fontspec}
\setmainfont{Georgia}
\setjamainfont{BIZ UDMincho Medium}

\title{テスト}
\begin{document}
\maketitle

\section{はじめに}

その人は ``Hello, world!'' と言いました。

That person said, ``Hello, world!''

\end{document}

[image: xelatex test 2023-04-10 8.46.44.png]

Shigeru Kobayashi

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