ctex-kit CJK宏包排版中文用pdflatex编译嵌套在`minipage`中的`list`-family env对于全角括号出现不正常的缩进情况？

这个问题的出现需要同时满足如下的条件：

使用pdflatex编译调用ctex宏包的文档
将\newtheorem的环境内嵌在tcolorbox中使用而不是使用\tcbuselibrary{theorems}中的\newtcbtheorem
编译的内容行首为全角的（而不是半角的(

MWE如下：

\documentclass{article}
\usepackage[UTF8]{ctex}
\usepackage{tcolorbox}
\newtheorem{example}{\textbf{Example}:}
\newenvironment{xmp}[1]{%
    \begin{tcolorbox}\begin{example}%
        \textbf{#1}\newline%
}%
{%
    \end{example}\end{tcolorbox}%
}%
\begin{document}%
\begin{xmp}{title}%
    (something aaa here) aaaa

    (something bbb here) bbbb

    (something ccc here) cccc
\end{xmp}%
\begin{xmp}{title}%
    （something aaa here）aaaa

    （something bbb here）bbbb

    （something ccc here）cccc
\end{xmp}%
\end{document}

如果使用pdflatex编译，这会导致：

而如果使用unicode引擎，则一切正常：

Oct 02 '25 14:10 Explorer-cc

将\newtheorem的环境内嵌在tcolorbox中使用而不是使用\tcbuselibrary{theorems}中的\newtcbtheorem

我使用tcolorbox的强大功能尝试模拟了上面的效果，无论使用pdflatex还是xe/lualatex均不会出现全角（的神秘缩进 :

\documentclass{article}
\usepackage[UTF8]{ctex}
\usepackage{tcolorbox}
\tcbuselibrary{theorems,skins}
\NewTcbTheorem[number within=section]{xmp}{Example}{%
    colbacktitle=tcbcolback,%
    coltitle=black,%
    titlerule=0pt,
    toptitle=1.5mm,
    top=0pt,
    fonttitle=\bfseries
}{example}
\begin{document}

\begin{xmp*}{title}
(something aaa here) aaaa

(something bbb here) bbbb

(something ccc here) cccc
\end{xmp*}


\begin{xmp*}{title}
（something aaa here）aaaa

（something bbb here）bbbb

（something ccc here）cccc
\end{xmp*}
\end{document}

Oct 02 '25 15:10 Explorer-cc

构造一个只使用 CJK 包的例子试试

Oct 02 '25 16:10 muzimuzhi

构造一个只使用 CJK 包的例子试试

我不是很了解CJK这个包如何确定

\begin{CJK}[<fontencoding>]{<encoding>}{<family>}
    ...
\end{CJK}

中的<family>的其他内容

下面的例子在TL2025+windows11+pdflatex编译正常...

\documentclass{article}
\usepackage{CJK}
\usepackage{tcolorbox}
\newtheorem{example}{\textbf{Example}:}
\newenvironment{xmp}[1]{%
    \begin{tcolorbox}\begin{example}%
        \textbf{#1}\newline%
}%
{%
    \end{example}\end{tcolorbox}%
}%
\begin{document}%
\begin{CJK}{UTF8}{gbsn}
    \begin{xmp}{title}%
        (something aaa here) aaaa

        (something bbb here) bbbb

        (something ccc here) cccc
    \end{xmp}%
    \begin{xmp}{title}%
        （something aaa here）aaaa

        （something bbb here）bbbb

        （something ccc here）cccc
    \end{xmp}%
\end{CJK}
\end{document}

有两种可能：

和字体「win下的中易宋体」有关（我不知道gbsn还可以是什么😓）
ctex在处理pdflatex引擎时调用CJK宏包的代码和上面的mwe调用的方式有差别

Edit

我不知道gbsn还可以是什么😓

在CJK包的文档中提到：

<family>     It is impossible to know in advance what fonts are
                    available at your site; look at the example FD (font
                    definition) files how to create or modify appropriate FD
                    files suiting your needs. See fonts.txt also for further
                    hints.

                    If this parameter is empty, the default value given in
                    CJK.enc is selected: `song' for all encodings except KS
                    (which defaults to `mj'). If you use this parameter it
                    is the same as you would have used \CJKfamily; all
                    encodings then use this family:

                      \begin{CJK}{...}{song}
                      ...

                    is identical to

                      \begin{CJK}{...}{}
                      \CJKfamily{song}
                      ...

                    You can change the families per encoding (and font
                    encoding) with the command \CJKencfamily; the first
                    parameter is the encoding, the second the family, the
                    optional argument is the font encoding. This overrides
                    the default value.

                    Note that \CJKfamily or a non-empty `family' parameter
                    of the CJK environment overrides any \CJKencfamily
                    commands. Say `\CJKfamily{}' to enable \CJKencfamily
                    again.

似乎同样不是很好确定如何找到ctex下调用的（应该是中易宋体(?)）字体的<family>😓😓😓

Oct 02 '25 16:10 Explorer-cc

相似 issue https://github.com/CTeX-org/ctex-kit/issues/671#issuecomment-1659372912 讨论到，加载 CJK、CJKspace 和 CJKpunct 后，问题复现。去掉 CJKpunct，问题消失。

其他（我不在 windows，没有 windows 内置字体，只能隔空）

尝试去掉 tcolorbox 依赖
默认设置（/tcb/capture=minipage）下，tcolorbox env 接近 minipage env。直接换成 minipage env，问题复现吗？
尝试一般化定理环境 \newtheorem 定义的环境，和 \list 类似（见 \@begintheorem 定义），可以试试用 enumitem、trivlist 之类的替换，看能否复现
\showbox 看看额外的缩进有多大

Oct 02 '25 18:10 muzimuzhi

相似 issue https://github.com/CTeX-org/ctex-kit/issues/671#issuecomment-1659372912 讨论到，加载 CJK、CJKspace 和 CJKpunct 后，问题复现。去掉 CJKpunct，问题消失。

我在win上测试了，确实如此。

尝试去掉 tcolorbox 依赖默认设置（/tcb/capture=minipage）下，tcolorbox env 接近 minipage env。直接换成 minipage env，问题复现吗？

问题可以复现。

\documentclass{article}
\usepackage{CJK}
\usepackage{CJKspace}
\usepackage{CJKpunct}
\newtheorem{example}{\textbf{Example}:}
\newenvironment{xmp}[1]{%
    \begin{minipage}{\textwidth}\begin{example}%
        \textbf{#1}\newline%
}%
{%
    \end{example}\end{minipage}%
}%
\begin{document}%
\begin{CJK}{UTF8}{gbsn}
    \begin{xmp}{title}%
        (something aaa here) aaaa

        (something bbb here) bbbb

        (something ccc here) cccc
    \end{xmp}%

    \bigskip

    \begin{xmp}{title}%
        （something aaa here）aaaa

        （something bbb here）bbbb

        （something ccc here）cccc
    \end{xmp}%
\end{CJK}
\end{document}

我不在 windows，没有 windows 内置字体，只能隔空

言外之意是在macOS下这个问题无法复现(?) 还是macOS无法使用CJK包可用的字体？

另外两个「其他」我需要下次再做尝试，一时不是很明白🙁

Oct 02 '25 18:10 Explorer-cc

言外之意是在macOS下这个问题无法复现(?) 还是macOS无法使用CJK包可用的字体？

要用到 Windows 独有的内置字体，非 Windows 系统不能直接用上。ctex 宏包 + pdflatex 编译，（默认配置下）只支持 Windows。

另外两个「其他」我需要下次再做尝试，一时不是很明白🙁

尝试一般化定理环境 \newtheorem 定义的环境，和 \list 类似（见 \@begintheorem 定义），可以试试用 enumitem、trivlist 之类的替换，看能否复现

是为了用更一般的环境替换 \newtheorem 定义的环境。和「其他」里的第一点类似，都是为了简化例子。

\showbox 看看额外的缩进有多大

是指（把输出不符合预期的内容）装进盒子、然后 \showbox 它、查看盒子内容。（可在 texdoc texbytopic 了解更多）和 https://github.com/CTeX-org/ctex-kit/issues/671#issuecomment-1658223176 里的类似，只是 \showbox 只 show 特定盒子，更方便定位；\showlists show 所有输出。

Oct 02 '25 19:10 muzimuzhi

不好意思，昨天有些事情耽搁了。

另外两个「其他」我需要下次再做尝试，一时不是很明白🙁

尝试一般化定理环境 \newtheorem 定义的环境，和 \list 类似（见 @begintheorem 定义），可以试试用 enumitem、trivlist 之类的替换，看能否复现是为了用更一般的环境替换 \newtheorem 定义的环境。和「其他」里的第一点类似，都是为了简化例子。

我明白的，只是前天晚上深夜了看不动 \@begintheorem了😟

在source2e.pdf中对\@begintheorem的定义为一个trivlist环境

% ltthm.dtx
\@begintheorem 
\@opargbegintheorem 
\@endtheorem

Providing theorem defaults.
48 ⟨/2ekernel⟩
49 ⟨∗2ekernel | latexrelease⟩
50 ⟨latexrelease⟩\IncludeInRelease{2024/03/18}%
51 ⟨latexrelease⟩ {\@begintheorem}{add link targets}%
52 \def\@begintheorem#1#2{\trivlist
53 \item[\MakeLinkTarget{\@currentcounter}\hskip \labelsep{\bfseries #1\ #2}]\itshape}
54 \def\@opargbegintheorem#1#2#3{\trivlist
55 \item[\MakeLinkTarget{\@currentcounter}\hskip \labelsep{\bfseries #1\ #2\ (#3)}]\itshape} 
56 ⟨latexrelease⟩\EndIncludeInRelease
57 ⟨latexrelease⟩\IncludeInRelease{0000/00/00}%
58 ⟨latexrelease⟩ {\@begintheorem}{add link targets}%
59 ⟨latexrelease⟩\def\@begintheorem#1#2{\trivlist
60 ⟨latexrelease⟩ \item[\hskip \labelsep{\bfseries #1\ #2}]\itshape}
61 ⟨latexrelease⟩\def\@opargbegintheorem#1#2#3{\trivlist
62 ⟨latexrelease⟩ \item[\hskip \labelsep{\bfseries #1\ #2\ (#3)}]\itshape} 
63 ⟨latexrelease⟩\EndIncludeInRelease
64 ⟨/2ekernel | latexrelease⟩
65 ⟨∗2ekernel⟩
66 \def\@endtheorem{\endtrivlist}
67 ⟨/2ekernel⟩
(End of definition for \@begintheorem, \@opargbegintheorem, and \@endtheorem.)

尝试去掉theorem依赖可以复现该问题:

\documentclass{article}
\usepackage{CJK}
\usepackage{CJKspace}
\usepackage{CJKpunct}
\newenvironment{xmp}[1]{%
    \begin{minipage}{\textwidth}%
        \begin{trivlist}%
          \item[{\bfseries Theorem}.] {\textit{\textbf{#1}}\newline}
}%
{%
        \end{trivlist}%
    \end{minipage}%
}%
\begin{document}%
\begin{CJK}{UTF8}{gbsn}
    \begin{xmp}{title}%
        (something aaa here) aaaa

        (something bbb here) bbbb

        (something ccc here) cccc
    \end{xmp}%

    \bigskip

    \begin{xmp}{title}%
        （something aaa here）aaaa

        （something bbb here）bbbb

        （something ccc here）cccc
    \end{xmp}%
\end{CJK}
\end{document}

Oct 04 '25 09:10 Explorer-cc

\showbox 看看额外的缩进有多大是指（把输出不符合预期的内容）装进盒子、然后 \showbox 它、查看盒子内容。（可在 texdoc texbytopic 了解更多）和 https://github.com/CTeX-org/ctex-kit/issues/671#issuecomment-1658223176 里的类似，只是 \showbox 只 show 特定盒子，更方便定位；\showlists show 所有输出。

使用`showlists`:

使用在 https://github.com/CTeX-org/ctex-kit/issues/671#issuecomment-1658223176 提到的方式，使用pdflatex编译使用了\showlists的.log文件如下.

log文件

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entering extended mode
restricted \write18 enabled.
%&-line parsing enabled.
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LaTeX2e <2025-06-01> patch level 1
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File: size10.clo 2025/01/22 v1.4n Standard LaTeX file (size option)
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Package: CJK 2021/10/16 4.8.5

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Package: MULEenc 2021/10/16 4.8.5
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(c:/texlive/2025/texmf-dist/tex/latex/cjkpunct/CJKpunct.spa))
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File: l3backend-pdftex.def 2025-06-09 L3 backend support: PDF output (pdfTeX)
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LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 14.
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[]$[]$ 
[]

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)
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..\OT1/cmr/m/n/10 n
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..\OT1/cmr/m/n/10 e
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\mathoff
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spacefactor 1000
### vertical mode entered at line 0
### current page:
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total height 57.44444 plus 5.0 minus 4.0
goal height 550.0
prevdepth 20.22221


! OK.
l.34 ...depth=1000 \showboxbreadth=1000 \showlists
                                                
? 

Overfull \hbox (15.0pt too wide) in paragraph at lines 26--35
[]$[]$ 

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...\OT1/cmr/m/n/10 t
...\OT1/cmr/m/n/10 h
...\OT1/cmr/m/n/10 i
...\OT1/cmr/m/n/10 n
...\OT1/cmr/m/n/10 g
...\glue 3.33333 plus 1.66666 minus 1.11111
...\OT1/cmr/m/n/10 b
...\OT1/cmr/m/n/10 b
...\OT1/cmr/m/n/10 b
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...\OT1/cmr/m/n/10 h
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...\OT1/cmr/m/n/10 c
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...\OT1/cmr/m/n/10 c
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...\OT1/cmr/m/n/10 c
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[1

{c:/Users/Kasmir/.texlive2025/texmf-var/fonts/map/pdftex/updmap/pdftex.map}]
(./mwe.aux)
***********
LaTeX2e <2025-06-01> patch level 1
L3 programming layer <2025-09-02>
***********
) 
Here is how much of TeX's memory you used:
1960 strings out of 467797
30862 string characters out of 5435982
432987 words of memory out of 5000000
30648 multiletter control sequences out of 15000+600000
628102 words of font info for 44 fonts, out of 8000000 for 9000
1141 hyphenation exceptions out of 8191
44i,5n,51p,161b,466s stack positions out of 10000i,1000n,20000p,200000b,200000s
<c:/texlive/2025/texmf-dist/fonts/type1/public/amsfonts/cm/cmbx10.pfb><c:/tex
live/2025/texmf-dist/fonts/type1/public/amsfonts/cm/cmbxti10.pfb><c:/texlive/20
25/texmf-dist/fonts/type1/public/amsfonts/cm/cmr10.pfb><c:/texlive/2025/texmf-d
ist/fonts/type1/arphic/gbsnu/gbsnuff.pfb>
Output written on mwe.pdf (1 page, 36291 bytes).
PDF statistics:
28 PDF objects out of 1000 (max. 8388607)
16 compressed objects within 1 object stream
0 named destinations out of 1000 (max. 500000)
1 words of extra memory for PDF output out of 10000 (max. 10000000)

使用`\showbox`:

我不确定我完全正确使用了\showbox

\documentclass{article}
\tracingonline2
\showboxdepth10
\showboxbreadth10
\usepackage{CJK}
\usepackage{CJKspace}
\usepackage{CJKpunct}
\newenvironment{xmp}[1]{%
    \begin{minipage}{\textwidth}%
        \begin{trivlist}%
          \item[{\bfseries Theorem}.] {\textit{\textbf{#1}}\newline}
}%
{%
        \end{trivlist}%
    \end{minipage}%
}%
\begin{document}%
\newbox\boxa
\newbox\boxb
\newbox\boxc
\begin{CJK}{UTF8}{gbsn}
    \begin{xmp}{title}%
        (something aaa here) aaaa

        (something bbb here) bbbb

        (something ccc here) cccc
    \end{xmp}%

    \bigskip

    \begin{xmp}{title}%
        \setbox\boxa\hbox{（something aaa here）aaaa}

        \setbox\boxb\hbox{（something bbb here）bbbb}

        \setbox\boxc\hbox{（something ccc here）cccc}
    \end{xmp}%
\end{CJK}

\showbox\boxa 

\showbox\boxb

\showbox\boxc

\end{document}

这将得到三个盒子构造的列表信息

\hbox(25.22223+20.22221)x345.0
.\hbox(0.0+0.0)x15.0
.\mathon
.\vbox(25.22223+20.22221)x345.0
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...\hbox(6.94444+0.0)x47.77757
....\glue 0.0
....\glue 0.0
....\glue -5.0
....\hbox(6.94444+0.0)x47.77757
.....\OT1/cmr/bx/n/10 T
.....\OT1/cmr/bx/n/10 h
.....\OT1/cmr/bx/n/10 e
.....\OT1/cmr/bx/n/10 o
.....\OT1/cmr/bx/n/10 r
.....\OT1/cmr/bx/n/10 e
.....\OT1/cmr/bx/n/10 m
.....\OT1/cmr/m/n/10 .
....\glue 5.0
...\penalty 0
...\OT1/cmr/bx/it/10 t
...\OT1/cmr/bx/it/10 i
...\OT1/cmr/bx/it/10 t
...\OT1/cmr/bx/it/10 l
...\OT1/cmr/bx/it/10 e
...\kern 0.85
...\penalty 10000
...\glue 0.0 plus 1.0fil
...\penalty -10000
...\glue(\rightskip) 0.0
..\penalty 300
..\glue(\baselineskip) 4.5
..\hbox(7.5+2.5)x345.0, glue set 278.83319fil
...\OT1/cmr/m/n/10 (
...\OT1/cmr/m/n/10 s
...\OT1/cmr/m/n/10 o
...\OT1/cmr/m/n/10 m
...\OT1/cmr/m/n/10 e
...\glue 3.33333 plus 1.66666 minus 1.11111
...\OT1/cmr/m/n/10 a
...\OT1/cmr/m/n/10 a
...\OT1/cmr/m/n/10 )
...\glue 3.33333 plus 1.66666 minus 1.11111
...\OT1/cmr/m/n/10 a
...\OT1/cmr/m/n/10 a
...\OT1/cmr/m/n/10 a
...\OT1/cmr/m/n/10 a
...\penalty 10000
...\glue(\parfillskip) 0.0 plus 1.0fil
...\glue(\rightskip) 0.0
..\glue(\parskip) 0.0
..\glue(\parskip) 0.0
..\glue(\baselineskip) 2.0
..\hbox(7.5+2.5)x345.0, glue set 275.49985fil
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完整的日志文件可见

log文件

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? 
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? 
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! OK.
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? 


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Oct 04 '25 09:10 Explorer-cc

CJK宏包排版中文用pdflatex编译嵌套在`minipage`中的`list`-family env对于全角括号出现不正常的缩进情况？

Edit

使用showlists:

使用\showbox:

使用`showlists`:

使用`\showbox`: