cdcmd (12oct21)

git-svn-id: svn://tug.org/texlive/trunk@60742 c570f23f-e606-0410-a88d-b1316a301751

12 files changed, 2069 insertions, 1 deletions

diff --git a/Master/texmf-dist/doc/latex/cdcmd/README.md b/Master/texmf-dist/doc/latex/cdcmd/README.md
new file mode 100644
index 00000000000..8c4f7028e59
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/cdcmd/README.md
@@ -0,0 +1,33 @@
+Abstract
+----
+The `cdcmd` package provides some conditional command, just like `styledcmd`
+package. The difference is `cdcmd` can define expandable command.
+
+See `cdcmd.pdf` (in English) or `cdcmd-cn.pdf` (in Chinese) for more details.
+
+Contributing
+----
+[Issues](https://github.com/Sophanatprime/cdcmd/issues) and
+[pull requests](https://github.com/Sophanatprime/cdcmd/pulls)
+are always welcome.
+
+Copyright and license
+----
+Copyright (C) 2021--2021
+Wenjian Chern (Longaster) and any individual authors listed elsewhere in this file.
+--------------------------------------------------------------------------
+
+This work may be distributed and/or modified under the
+conditions of the LaTeX Project Public License, either
+version 1.3c of this license or (at your option) any later
+version. This version of this license is in
+   http://www.latex-project.org/lppl/lppl-1-3c.txt
+and the latest version of this license is in
+   http://www.latex-project.org/lppl.txt
+and version 1.3 or later is part of all distributions of
+LaTeX version 2005/12/01 or later.
+
+This work has the LPPL maintenance status `maintained`.
+
+The Current Maintainers of this work are Wenjian Chern (Longaster).
+--------------------------------------------------------------------------
diff --git a/Master/texmf-dist/doc/latex/cdcmd/cdcmd-cn.pdf b/Master/texmf-dist/doc/latex/cdcmd/cdcmd-cn.pdf
new file mode 100644
index 00000000000..c99eb26d0c7
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/cdcmd/cdcmd-cn.pdf
diff --git a/Master/texmf-dist/doc/latex/cdcmd/cdcmd-cn.tex b/Master/texmf-dist/doc/latex/cdcmd/cdcmd-cn.tex
new file mode 100644
index 00000000000..09be66042cd
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/cdcmd/cdcmd-cn.tex
@@ -0,0 +1,175 @@
+\documentclass{ctxdoc}
+\usepackage{xcolor}
+\usepackage{cdcmd}
+\title{\pkg{cdcmd}，一跟可扩展的条件化命令宏包}
+\author{雾月, Longaster\thanks{Email: \url{longaster@163.com}}}
+\date{\today v1.0}
+
+
+\begin{document}
+\maketitle
+
+\pkg{cdcmd} 提供了条件化命令的方式，与 \pkg{styledcmd} 宏包不同，该宏包的某些命令是可 \verb|f-|扩展的，这在某些情况下是有用的。
+
+\section{主要接口}
+
+\begin{function}{\newcondition,\setcondition,\clearcondition}
+	\begin{syntax}
+		\cs{newcondition} \marg{identifier} \marg{id(s)}
+		\cs{setcondition} + \marg{identifier=ids list}
+        \cs{clearcondition}\oarg{identifier(s)}
+	\end{syntax}
+	\cs{newcondition} 定义 \meta{identifier} 的 \meta{ids}。\meta{identifier} 两侧的空格将被移除。
+
+	\cs{setcondition} 设置在当前组中有效的 \meta{id}。不带 \verb|+| 的版本将局部地清除原先设置的 \meta{identifier} 的ids。
+
+    \meta{identifier}、\meta{id} 均不能为 \verb|*|。
+    
+    \cs{clearcondition} 局部地清除指定的 \meta{identifiers}，默认值为 \verb|*|，即清除所有。
+\end{function}
+
+\begin{function}{
+	\conditionif,\conditioncmd,
+	\econditionif,\econditioncmd,
+}
+	\begin{syntax}
+		\cs{conditionif} * \oarg{identifier=ids list} \marg{true} \marg{false}
+		\cs{conditioncmd} * \oarg{identifier=ids list} \marg{material}
+	\end{syntax}
+	当 \meta{identifier=ids list} 的组合使得当前条件为真时，使用 \meta{true}、\meta{material}，为假时，使用 \meta{false}。
+
+	不带 \verb|*| 的版本为 \verb|any|，带 \verb|*| 的为 \verb|all|。详见下方的说明。
+
+	\cs{econditionif}、\cs{econditioncmd} 为可 \verb|f|-扩展的。
+	\cs{conditionif}、\cs{conditioncmd} 为不可扩展（\tn{protected}）的。
+
+	\meta{identifier=ids list} 默认值为 \verb|*|，即在默认情况下将输出 \meta{true}、\meta{material}。
+\end{function}
+
+\begin{function}{
+	\conditioncase,\conditioncaseTF,
+	\econditioncase,\econditioncaseTF
+}
+	\begin{syntax}
+        \cs{conditioncaseTF} * !
+        ~~\{
+        ~~~~\marg{identifier-ids list case_1} \marg{code_1}
+        ~~~~\marg{identifier-ids list case_2} \marg{code_2}
+        ~~~~...
+        ~~~~\marg{identifier-ids list case_n} \marg{code_n}
+        ~~\}
+        ~~\marg{true code}
+        ~~\marg{false code}
+	\end{syntax}
+	\verb|!| 未给出时，依次计算 \meta{identifier-ids list cases}，直到遇到第一个 \meta{case} 为\emph{真}，输出对应的 \meta{code} 与 \meta{true code}，若未成功匹配，则输出 \meta{false code}。
+
+	\verb|!| 给出时，依次计算 \meta{identifier-ids list cases}，直到遇到第一个 \meta{case} 为\emph{假}，输出对应的 \meta{code} 与 \meta{true code}，若未成功匹配，则输出 \meta{false code}。
+\end{function}
+
+\begin{texnote}
+	对 \meta{ids} 的处理使用的是 \LaTeX3 的 \cs{clist_map_...}，它们将形如 \verb|{,}| 的list视为空，形如 \verb|{{},}| 视为非空。
+\end{texnote}
+
+假定已经使用了如下命令：
+\begin{verbatim}
+  \newcondition{defined}{}
+  \newcondition{paper}{a4,a5,b5}
+  \setcondition{paper={a5,b5}}
+\end{verbatim}
+即 \verb|defined| 已被 \cs{newcondition} 定义且无id，\verb|paper| 已被 \cs{newcondition} 定义且有 \verb|a4,b5,a5| 三个id，其中 \verb|a5,b5| 已被设置，\verb|undefined| 未被定义。
+
+\verb|any| 在满足如下条件之一为真：
+\begin{enumerate}
+    \item \meta{identifier=ids list} 为 \verb|*|；
+    \item \meta{identifier=ids list} 为一个已被定义的 \meta{identifier}，且未给出 \meta{id} 值 ，即 \meta{identifier=ids list} 为 \verb|paper| 或 \verb|defined|；
+    \item \meta{identifier=ids list} 为一个已被定义的 \meta{identifier}，且 \meta{id} 值为 \verb|*|，即 \meta{identifier=ids list} 为 \verb|paper=*| 或 \verb|defined=*|；
+    \item \meta{identifier=ids list} 为一个已被定义的 \meta{identifier}，且给出的 \meta{ids} 中\emph{有}被设置的id，即 \meta{identifier=ids list} 为 \verb|paper=b5| 或 \verb|paper={a5,b5}| 或 \verb|paper={a5,a0}| （\verb|a0| 未设置，但 \verb|a5| 已设置）。注意 \verb|defined| 给出的任何除 \verb|*| 之外的 \meta{ids} 值都将使得条件为假，即使是空值（\verb|defined=|）；
+    \item \meta{identifier=ids list} 中\emph{任意一项}满足如上4点之一，如 \verb|paper={a5,a0},undefined|。
+\end{enumerate}
+
+\verb|all| 在满足如下条件之一为真：
+\begin{enumerate}
+    \item \meta{identifier=ids list} 为 \verb|*|；
+    \item \meta{identifier=ids list} 为一个已被定义的 \meta{identifier}，且未给出 \meta{id} 值 ，即 \meta{identifier=ids list} 为 \verb|paper| 或 \verb|defined|；
+    \item \meta{identifier=ids list} 为一个已被定义的 \meta{identifier}，且 \meta{id} 值为 \verb|*|，即 \meta{identifier=ids list} 为 \verb|paper=*| 或 \verb|defined=*|；
+    \item \meta{identifier=ids list} 为一个已被定义的 \meta{identifier}，且给出的 \meta{ids} \emph{均}被设置，即 \meta{identifier=ids list} 为 \verb|paper=b5| 或 \verb|paper={a5,b5}|。注意 \verb|defined| 给出的任何除 \verb|*| 之外的 \meta{id} 值都将使得条件为假，即使是空值（\verb|defined=|）；
+    \item \meta{identifier=ids list} 中\emph{所有项均}满足如上4点之一，如 \verb|paper={a5,b5},defined|。
+\end{enumerate}
+
+\begin{function}{
+	\newconditioncommand,
+	\renewconditioncommand,
+	\provideconditioncommand,
+	\declareconditioncommand,
+	\neweconditioncommand,
+	\reneweconditioncommand,
+	\provideeconditioncommand,
+	\declareeconditioncommand,
+}
+	\begin{syntax}
+		\cs{newconditioncommand} * \meta{function} \oarg{arg nums} \oarg{default} \marg{code}
+		\cs{neweconditioncommand} * \meta{function} \oarg{arg nums} \marg{code}
+	\end{syntax}
+	这些命令与 \LaTeXe{} 的命令相对应。\cs{newconditioncommand} 命令正如 \LaTeXe{} 的 \tn{newcommand} 命令。它们将定义形如 \verb|\foo+|\marg{identifier=ids list}\meta{args} 的命令。定义的命令的可选参数不可包含 \tn{par}。
+
+	\cs{neweconditioncommand} 命令定义的是可扩展的命令，不可设置默认参数。但可使用 \pkg{xparse} 形式的命令定义可设置默认值的参数。
+	
+	不带 |*| 的版本定义的命令是 \tn{long} 的。即其参数可以包含多个段落。
+\end{function}
+
+\begin{function}{
+    \NewConditionCommand ,
+    \RenewConditionCommand ,
+    \ProvideConditionCommand ,
+    \DeclareConditionCommand ,
+    \NewExpandableConditionCommand ,
+    \RenewExpandableConditionCommand ,
+    \ProvideExpandableConditionCommand ,
+    \DeclareExpandableConditionCommand ,
+}
+	\begin{syntax}
+		\cs{NewConditionCommand} \meta{function} \marg{arg spec} \marg{code}
+	\end{syntax}
+	这些命令与 \pkg{xparse} 宏包的命令相对应。它们将定义形如 \verb|\foo+|\marg{identifier=ids list}\meta{args} 的命令。
+
+	\meta{arg spec} 应符合 \pkg{xparse} 宏包相应命令的规则。
+
+	其中带 \verb|+| 的命令为 |all|，不带 \verb|+| 的为 |any|。\meta{identifier=ids list} 的含义如上所述。\meta{args} 为
+	由 \meta{arg spec} 定义的参数。
+\end{function}
+
+
+\section{例子}
+
+\input{cdcmd-test.tex}
+
+
+\section{For package author}
+
+\begin{function}[pTF]{
+  \cdcmd_any_if:n,
+  \cdcmd_all_if:n,
+  \cdcmd_any_if:o,
+  \cdcmd_all_if:o,
+  \cdcmd_any_if:V,
+  \cdcmd_all_if:V,
+  \cdcmd_any_if:f,
+  \cdcmd_all_if:f,
+}
+  它们的含义应该是显然的。
+\end{function}
+
+\begin{function}[TF]{
+  \cdcmd_any_case_true:n,
+  \cdcmd_any_case_false:n,
+  \cdcmd_all_case_true:n,
+  \cdcmd_all_case_false:n,
+}
+  它们的含义应该是显然的。
+\end{function}
+
+\section{实现}
+
+见 \href{./cdcmd.pdf}{cdcmd.pdf}
+
+\end{document}
diff --git a/Master/texmf-dist/doc/latex/cdcmd/cdcmd-test.tex b/Master/texmf-dist/doc/latex/cdcmd/cdcmd-test.tex
new file mode 100644
index 00000000000..f0d5ed5a98f
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/cdcmd/cdcmd-test.tex
@@ -0,0 +1,161 @@
+{\color{red!90!black}
+\begin{verbatim}
+  \newcondition{defined}{}
+  \newcondition{paper}{a4,a5,b5}
+  \setcondition{paper={a5,b5}}
+\end{verbatim}
+}
+
+{
+\newcondition{defined}{}
+\newcondition{paper}{a4,a5,b5}
+\setcondition{paper={a5,b5}}
+\def\cdcmdtest#1->#2 /{\textcolor{red!90!black}{\detokenize{#1}}:~ #1 \newline}
+\parindent=0pt\ttfamily
+\cdcmdtest\conditionif[*]{t}{f}->t /
+\cdcmdtest\conditionif[defined]{t}{f}->t /
+\cdcmdtest\conditionif[defined=]{t}{f}->f /
+\cdcmdtest\conditionif[defined=*]{t}{f}->t /
+\cdcmdtest\conditionif[defined=a]{t}{f}->f /
+\cdcmdtest\conditionif[paper={a5,a0},undefined]{t}{f}->t /
+
+\cdcmdtest\conditionif*[*]{t}{f}->t /
+\cdcmdtest\conditionif*[defined]{t}{f}->t /
+\cdcmdtest\conditionif*[defined={,,}]{t}{f}->f /
+\cdcmdtest\conditionif*[defined=*]{t}{f}->t /
+\cdcmdtest\conditionif*[defined=a]{t}{f}->f /
+\cdcmdtest\conditionif*[paper={a5,a0},undefined]{t}{f}->f /
+\cdcmdtest\conditionif*[*,undefined]{t}{f}->f /
+\cdcmdtest\conditionif*[paper={a5,b5}]{t}{f}->t /
+\cdcmdtest\conditionif*[paper={a5,,b5}]{t}{f}->t /
+\cdcmdtest\conditionif*[paper={a5,b6,a5}]{t}{f}->f /
+\cdcmdtest\conditionif*[paper={a5,{ },45}]{t}{f}->f /
+\cdcmdtest\conditionif*[*,defined,paper={a5,b5}]{t}{f}->t /
+}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \def\truetext{true} \def\falsetext{false}
+  \edef\testa{\econditionif[*]{true}{false}}
+  \ifx\testa\truetext t\else f\fi
+  \ifx\testa\falsetext t\else f\fi
+  \strcmp {\econditionif[*]{true}{false}} {true}
+  \strcmp {\econditionif[*]{true}{false}} {false}
+  \strcmp {\testa} {\truetext}
+  \strcmp {\testa} {\falsetext}
+\end{verbatim}
+}
+\def\truetext{true} \def\falsetext{false}
+\edef\testa{\econditionif[*]{true}{false}}
+\ifx\testa\truetext t\else f\fi
+\ifx\testa\falsetext t\else f\fi
+\strcmp{\econditionif[*]{true}{false}}{true}
+\strcmp{\econditionif[*]{true}{false}}{false}
+\strcmp{\testa}{\truetext}
+\strcmp{\testa}{\falsetext}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \conditioncase{
+    {paper=a3} {a3}
+    {paper=a4} {a4}
+    {paper,defined} {pd}
+  }
+\end{verbatim}
+}
+\conditioncase{
+  {paper=a3} {a3}
+  {paper=a4} {a4}
+  {paper,defined} {pd}
+}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \conditioncaseTF{
+    {paper=a3} {a3}
+    {paper=a4} {a4}
+    {paper,defined} {pd}
+  }{true}{false}
+\end{verbatim}
+}
+\conditioncaseTF{
+  {paper=a3} {a3}
+  {paper=a4} {a4}
+  {paper,defined} {pd}
+}{true}{false}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \conditioncase!{
+    {paper=a3} {a3}
+    {paper=a4} {a4}
+    {paper,defined} {pd}
+  }
+\end{verbatim}
+}
+\conditioncase!{
+  {paper=a3} {a3}
+  {paper=a4} {a4}
+  {paper,defined} {pd}
+}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \conditioncaseTF!{
+    {paper=a3} {a3}
+    {paper=a4} {a4}
+    {paper,defined} {pd}
+  }{true}{false}
+\end{verbatim}
+}
+\conditioncaseTF!{
+  {paper=a3} {a3}
+  {paper=a4} {a4}
+  {paper,defined} {pd}
+}{true}{false}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \newconditioncommand\longprotectedcdcmd{longprotectedcdcmd}
+  \newconditioncommand\longprotectedcdcmdi[1]{longprotectedcdcmdi<#1>}
+  \newconditioncommand\longprotectedcdcmdio[1][DFT]{longprotectedcdcmdio<#1>}
+  \newconditioncommand*\shortprotectedcdcmd{shortprotectedcdcmd}
+  \newconditioncommand*\shortprotectedcdcmdi[1]{shortprotectedcdcmdi<#1>}
+  \newconditioncommand*\shortprotectedcdcmdio[1][DFT]{shortprotectedcdcmdio<#1>}
+
+  \setcondition{paper={a4,a5}}
+  \longprotectedcdcmd{*}
+  \longprotectedcdcmdi{*}{1\par arg}
+  \longprotectedcdcmdio{*}
+  \longprotectedcdcmdio{*}[1opt]
+  \longprotectedcdcmdio{paper=a4}[1opt a4]
+  \longprotectedcdcmdio+{paper={a4,a7}}[1opt a4a7]
+  \shortprotectedcdcmd{*}
+  \shortprotectedcdcmdi{*}{1\par arg}
+  \shortprotectedcdcmdio{*}
+  \shortprotectedcdcmdio{*}[1opt]
+  \shortprotectedcdcmdio{paper=a4}[1opt a4]
+  \shortprotectedcdcmdio+{paper={a4,a7}}[1opt a4a7]
+\end{verbatim}
+}
+\newconditioncommand\longprotectedcdcmd{longprotectedcdcmd}
+\newconditioncommand\longprotectedcdcmdi[1]{longprotectedcdcmdi<#1>}
+\newconditioncommand\longprotectedcdcmdio[1][DFT]{longprotectedcdcmdio<#1>}
+\newconditioncommand*\shortprotectedcdcmd{shortprotectedcdcmd}
+\newconditioncommand*\shortprotectedcdcmdi[1]{shortprotectedcdcmdi<#1>}
+\newconditioncommand*\shortprotectedcdcmdio[1][DFT]{shortprotectedcdcmdio<#1>}
+
+{\ttfamily\setcondition{paper={a4,a5}}\obeylines
+\longprotectedcdcmd{*}
+\longprotectedcdcmdi{*}{1\par arg}
+\longprotectedcdcmdio{*}
+\longprotectedcdcmdio{*}[1opt]
+\longprotectedcdcmdio{paper=a4}[1opt a4]
+\longprotectedcdcmdio+{paper={a4,a7}}[1opt a4a7]
+\shortprotectedcdcmd{*}
+\shortprotectedcdcmdi{*}{1arg}
+\shortprotectedcdcmdio{*}
+\shortprotectedcdcmdio{*}[1opt]
+\shortprotectedcdcmdio{paper=a4}[1opt a4]
+\shortprotectedcdcmdio+{paper={a4,a7}}[1opt a4a7]
+}
diff --git a/Master/texmf-dist/doc/latex/cdcmd/cdcmd.pdf b/Master/texmf-dist/doc/latex/cdcmd/cdcmd.pdf
new file mode 100644
index 00000000000..2ed91deeff1
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/cdcmd/cdcmd.pdf
diff --git a/Master/texmf-dist/source/latex/cdcmd/cdcmd.dtx b/Master/texmf-dist/source/latex/cdcmd/cdcmd.dtx
new file mode 100644
index 00000000000..84205860970
--- /dev/null
+++ b/Master/texmf-dist/source/latex/cdcmd/cdcmd.dtx
@@ -0,0 +1,1053 @@
+%\iffalse meta-comment 
+%<*internal>
+\iffalse
+%</internal>
+%<*readme>
+Abstract
+----
+The `cdcmd` package provides some conditional command, just like `styledcmd` 
+package. The difference is `cdcmd` can define expandable command.
+
+See `cdcmd.pdf` (in English) or `cdcmd-cn.pdf` (in Chinese) for more details.
+
+Contributing
+----
+[Issues](https://github.com/Sophanatprime/cdcmd/issues) and
+[pull requests](https://github.com/Sophanatprime/cdcmd/pulls)
+are always welcome.
+
+Copyright and license
+----
+Copyright (C) 2021--2021
+Wenjian Chern (Longaster) and any individual authors listed elsewhere in this file.
+--------------------------------------------------------------------------
+
+This work may be distributed and/or modified under the
+conditions of the LaTeX Project Public License, either
+version 1.3c of this license or (at your option) any later
+version. This version of this license is in
+   http://www.latex-project.org/lppl/lppl-1-3c.txt
+and the latest version of this license is in
+   http://www.latex-project.org/lppl.txt
+and version 1.3 or later is part of all distributions of
+LaTeX version 2005/12/01 or later.
+
+This work has the LPPL maintenance status `maintained`.
+
+The Current Maintainers of this work are Wenjian Chern (Longaster).
+--------------------------------------------------------------------------
+%</readme>
+%<*internal>
+\fi
+%</internal>
+%\fi
+%\iffalse 
+%<package>\NeedsTeXFormat{LaTeX2e}
+%<package>\RequirePackage{expl3}[2021/05/11]
+%<package>\GetIdInfo$Id: cdcmd.dtx 1.0 2021/10/12 +0815 Longaster$
+%<package>  {Expandable Conditional Command In LaTeX2e}
+%<package>\ProvidesExplPackage{cdcmd}
+%<package>  {\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
+%<*driver>
+\documentclass{l3doc}
+\usepackage{xcolor}
+\usepackage{cdcmd}
+\EnableCrossrefs
+\CodelineIndex
+\RecordChanges
+\begin{document}
+  \DocInput{\jobname.dtx}
+  \PrintChanges
+  \PrintIndex
+\end{document}
+%</driver>
+%\fi 
+%
+%\GetFileInfo{cdcmd.sty}
+% \title{The \pkg{cdcmd} package}
+%
+% \author{Wenjian Chern
+%  (Longaster\thanks{Email: \url{longaster@163.com}}~)}
+%
+% \date{Released \today, version \fileversion}
+%
+% \maketitle
+%
+% \begin{documentation}
+% \ExplSyntaxOn \let\strcmp\tex_strcmp:D \ExplSyntaxOff
+%
+% \begin{abstract}
+% \pkg{cdcmd} is a package that allows you define `polymorphic' command. Like \pkg{styledcmd} package,
+% you can define \tn{protected} command, but \pkg{cdcmd} can define expandable conditional command as well.
+% \end{abstract}
+%
+%\section{Main Interface}
+%
+%\begin{function}{\newcondition,\setcondition,\clearcondition}
+%  \begin{syntax}
+%   \cs{newcondition} \marg{identifier} \marg{id(s)}
+%   \cs{setcondition} + \marg{identifier=ids list}
+%   \cs{clearcondition}\oarg{identifier(s)}
+%  \end{syntax}
+%  \cs{newcondition} new \meta{identifier} and its \meta{ids}. 
+%  The leading and trailing spaces in \meta{identifier} will be removed.
+%
+%  \cs{setcondition} sets \meta{ids} of \meta{identifier} locally. 
+%  The un-\verb|+| version will clear \meta{ids} formerly set. 
+%
+%  Both \meta{identifier} and \meta{id} cannot be \verb|*|.
+%    
+%  \cs{clearcondition} will clear ids from given \meta{identifiers} locally. Default value is \verb|*|, that is, clear all.
+%\end{function}
+%
+%\begin{function}{
+%  \conditionif,\conditioncmd,
+%  \econditionif,\econditioncmd,
+%}
+%  \begin{syntax}
+%    \cs{conditionif} * \oarg{identifier=ids list} \marg{true} \marg{false}
+%    \cs{conditioncmd} * \oarg{identifier=ids list} \marg{material}
+%  \end{syntax}
+%  When the \meta{identifier=ids list} makes \texttt{true} condition, leave \meta{true}/\marg{material} in the input stream.
+%  Leaving \meta{false} when the condition is \texttt{false}.
+%
+%  The starred version is \texttt{all}, unstarred version is \text{any}.
+%  See below for more details.
+%
+%  The \cs{econditionif} and \cs{econditioncmd} are expandable (\verb|f-|expandable).
+%  \cs{conditionif}, \cs{conditioncmd} are \tn{protected}.
+%
+%  The default value of \meta{identifier=id list} is \verb|*|, will leave \meta{true}/\meta{material} in the input stream.
+%\end{function}
+%
+%\begin{function}{
+%  \conditioncase,\conditioncaseTF,
+%  \econditioncase,\econditioncaseTF
+%}
+%  \begin{syntax}
+%     \cs{conditioncaseTF} * !
+%     ~~\{
+%     ~~~~\marg{identifier=ids list case_1} \marg{code_1}
+%     ~~~~\marg{identifier=ids list case_2} \marg{code_2}
+%     ~~~~...
+%     ~~~~\marg{identifier=ids list case_n} \marg{code_n}
+%     ~~\}
+%     ~~\marg{true code}
+%     ~~\marg{false code}
+%  \end{syntax}
+% Evaluates in turn each of the \meta{identifier=ids list} until the first one that evaluates
+% to \texttt{true} or to \texttt{false}, for un-\verb|!| version or \verb|!| version, respectively.
+% The \meta{code} associated to this first case is left in the input stream, followed by the \meta{true code}, 
+% and other cases are discarded. If none of the cases match then only the \meta{false code} is inserted.
+%
+% The unstarred version is \verb|any|, starred version is \verb|all|.
+%\end{function}
+%
+%\begin{texnote}
+%  The process in \meta{ids} is using \cs{clist_map_...} of \LaTeX3. It will view \verb|{,}| as empty, 
+%  while \verb|{{},}| are not. See \pkg{interface3.pdf} for more details.
+%\end{texnote}
+%
+% Supposing following commands have been used.
+%\begin{verbatim}
+%  \newcondition{defined}{}
+%  \newcondition{paper}{a4,a5,b5}
+%  \setcondition{paper={a5,b5}}
+%\end{verbatim}
+% It will define an identifier named \verb|defined|, which has not id.
+% And define an identifier named \verb|paper|, which has three ids: \verb|a4, a5, b5|.
+% Then set two ids: \verb|a5,b5| for \verb|paper| identifier.
+%
+% \verb|any| will be evaluated to \texttt{true} if \meta{identifier=ids list} 
+% matches any of one statement described followed:
+%\begin{enumerate}
+%    \item \meta{identifier=ids list} is exactly \verb|*|;
+%    \item \meta{identifier=ids list} is exactly a defined $\mathit{identifier}$, such as \verb|paper|, or \verb|defined|;
+%    \item \meta{identifier=ids list} is a defined $\mathit{identifier}$, and its \meta{id} is \verb|*|, such as \verb|paper=*| or \verb|defined=*|;
+%    \item \meta{identifier=ids list} is a defined $\mathit{identifier}$, and \emph{one of} item in \meta{ids} has been set, such as \verb|paper=b5| or \verb|paper={a5,b5}| or \verb|paper={a5,a0}| (\verb|a0| unset, but \verb|a5| already set. Any id set to \meta{identifier} \verb|defined| will evaluate to \texttt{false}, except \verb|*|, because the $\mathit{identifier}$ never have defined id, even the \meta{ids} is empty (\verb|defined=|);
+%    \item \emph{Any} single item in \meta{identifier=ids list} matches any statements listed above, such as \verb|paper={a5,a0},undefined|.
+%\end{enumerate}
+%
+% \verb|all| will be evaluated to \text{true} if \meta{identifier=ids list}
+% matches any of one statement described followed.
+%\begin{enumerate}
+%    \item \meta{identifier=ids list} is exactly \verb|*|;
+%    \item \meta{identifier=ids list} is exactly a defined $\mathit{identifier}$, such as \verb|paper|, or \verb|defined|;
+%    \item \meta{identifier=ids list} is a defined $\mathit{identifier}$, and its \meta{id} is \verb|*|, such as \verb|paper=*| or \verb|defined=*|;
+%    \item \meta{identifier=ids list} is a defined $\mathit{identifier}$, and \emph{all of} the \meta{ids} has been set, such as \verb|paper=b5| or \verb|paper={a5,b5}|. The any id set to \meta{identifier} \verb|defined| will evaluate to \texttt{false}, except \verb|*|, because the $\mathit{identifier}$ never have defined id, even the \meta{ids} is empty (\verb|defined=|);
+%    \item \emph{All} items in \meta{identifier=ids list} match any statements listed above, such as \verb|paper={a5,b5},defined|.
+%\end{enumerate}
+%
+%\begin{function}{
+%  \newconditioncommand,
+%  \renewconditioncommand,
+%  \provideconditioncommand,
+%  \declareconditioncommand,
+%  \neweconditioncommand,
+%  \reneweconditioncommand,
+%  \provideeconditioncommand,
+%  \declareeconditioncommand,
+%}
+%  \begin{syntax}
+%    \cs{newconditioncommand} * \meta{function} \oarg{arg nums} \oarg{default} \marg{code}
+%    \cs{neweconditioncommand} * \meta{function} \oarg{arg nums} \marg{code}
+%  \end{syntax}
+%  Those commands are just like \tn{newcommand}, \tn{renewcommand}, etc. They will define command like 
+%  \verb|\foo+|\marg{identifier=ids list}\meta{args}. The optional argument cannot contain \tn{par}.
+%
+%  The \verb|e|-version commands define expandable command, and cannot set default value.
+%  However you can use \pkg{xparse}-like command illustrated followed,
+%  which can set default value.
+%  
+%  Unstarred version is \tn{long}, just like \LaTeX's.
+%
+%  The new \meta{function} will take one optional argument: \verb|+|, the function is just like 
+%  the \verb|*| in \cs{conditionif}, etc. And one mandatory argument \meta{identifier=ids list}.
+%  After absorbing these two arguments, then absorb arguments of given \meta{arg nums}, or use \meta{default}, if given.
+%\end{function}
+%
+%\begin{function}{
+%    \NewConditionCommand ,
+%    \RenewConditionCommand ,
+%    \ProvideConditionCommand ,
+%    \DeclareConditionCommand ,
+%    \NewExpandableConditionCommand ,
+%    \RenewExpandableConditionCommand ,
+%    \ProvideExpandableConditionCommand ,
+%    \DeclareExpandableConditionCommand ,
+%}
+%  \begin{syntax}
+%    \cs{NewConditionCommand} \meta{function} \marg{arg spec} \marg{code}
+%  \end{syntax}
+%  Those commands are just like \pkg{xparse}'s \cs{NewDocumentCommand}, etc.
+%  They will define command like \verb|\foo+|\marg{identifier=ids list}\meta{args}. 
+%
+%  \meta{arg spec} must follow the rules of the \pkg{xparse} package.
+%
+%  The new \meta{function} will take one optional argument: \verb|+|, the function is just like 
+%  the \verb|*| in \cs{conditionif}, etc. And one mandatory argument \meta{identifier=ids list}.
+%  After absorbing these two arguments, then absorb arguments of given \meta{arg spec}.
+%\end{function}
+%
+% \section{Examples}
+%
+% \input{cdcmd-test.tex}
+%
+% \section{For package authors}
+%
+% \begin{function}[pTF]{
+%  \cdcmd_any_if:n,
+%  \cdcmd_all_if:n,
+%  \cdcmd_any_if:o,
+%  \cdcmd_all_if:o,
+%  \cdcmd_any_if:V,
+%  \cdcmd_all_if:V,
+%  \cdcmd_any_if:f,
+%  \cdcmd_all_if:f,
+% }
+%  The meaning should be obvious.
+% \end{function}
+%
+% \begin{function}[TF]{
+%  \cdcmd_any_case_true:n,
+%  \cdcmd_any_case_false:n,
+%  \cdcmd_all_case_true:n,
+%  \cdcmd_all_case_false:n,
+% }
+%  The meaning should be obvious.
+% \end{function}
+%
+% \end{documentation}
+%
+% \begin{implementation}
+%
+% \section{Implementation}
+%
+%    \begin{macrocode}
+%<*package>
+%    \end{macrocode}
+%    \begin{macrocode}
+%<@@=cdcmd>
+%    \end{macrocode}
+%    \begin{macrocode}
+\str_const:Nn \c_cdcmd_all_str { * }
+\clist_new:N \g__cdcmd_clist
+\bool_new:N \l__cdcmd_clear_set_bool
+\msg_new:nnn { cdcmd } { condition-exist }
+  { The~ condition~ `#1'~ you~ try~ to~ new~ already~ exists. }
+\msg_new:nnn { cdcmd } { condition-not-exist }
+  { The~ condition~ `#1'~ not~ exists. }
+\msg_new:nnn { cdcmd } { condition-id-not-exist }
+  { The~ id~ `#2' of~ condition~ `#1'~ not~ exists. }
+%    \end{macrocode}
+% \begin{macro}[pTF]{\cdcmd_if_exist:n}
+% Condition \meta{indentifier} if exist.
+%    \begin{macrocode}
+\prg_new_conditional:Npnn \cdcmd_if_exist:n #1 { p, T, F, TF }
+  { 
+    \clist_if_exist:cTF { c__cdcmd_condition@ #1 _clist } 
+      { \prg_return_true: } { \prg_return_false: } 
+  }
+%    \end{macrocode}
+% \end{macro}
+% \begin{macro}[TF]{\cdcmd_cd_id_if_exist:nn}
+% ID \meta{id} of condition \meta{indentifier} if exist.
+%    \begin{macrocode}
+\prg_new_conditional:Npnn \cdcmd_cd_id_if_exist:nn #1#2 { T, F, TF }
+  {
+    \clist_if_in:cnTF { c__cdcmd_condition@ #1 _clist } {#2}
+      { \prg_return_true: } { \prg_return_false: }
+  }
+%    \end{macrocode}
+% \end{macro}
+% \begin{macro}{
+%  \cdcmd_new:nn,
+%  \cdcmd_set:nn,
+%  \cdcmd_set_cdcmd_single:nn,
+%  \cdcmd_set_cdcmd_all:n,
+%  \cdcmd_set:n,
+%  \cdcmd_clear_set:n,
+% }
+%    \begin{macrocode}
+\cs_new_nopar:Npn \cdcmd_new:nn #1#2
+  {
+    \cdcmd_if_exist:nTF {#1}
+      { \msg_error:nnn { cdcmd } { condition-exist } {#1} }
+      {
+        \clist_gput_right:Nn \g__cdcmd_clist {#1}
+        \clist_const:cn { c__cdcmd_condition@ #1 _clist } {#2}
+        \clist_new:c { l__cdcmd_curr_condition@ #1 _clist }
+      }
+  }
+\cs_new_nopar:Npn \cdcmd_set:nn #1#2
+  { 
+    \cdcmd_if_exist:nTF {#1}
+      {
+        \bool_if:NT \l__cdcmd_clear_set_bool
+          { \clist_clear:c { l__cdcmd_curr_condition@ #1 _clist } }
+        \clist_map_inline:nn {#2}
+          {
+            \str_if_eq:eeTF {##1} { \c_cdcmd_all_str }
+              { \clist_map_break:n { \cdcmd_set_cdcmd_all:n {#1} } }
+              { \cdcmd_set_cdcmd_single:nn {#1} {##1} }
+          }
+      }
+      { \msg_warning:nnn { cdcmd } { condition-not-exist } {#1} }
+  }
+\cs_new_nopar:Npn \cdcmd_set_cdcmd_single:nn #1#2
+  { 
+    \cdcmd_if_exist:nTF {#1}
+      { 
+        \cdcmd_cd_id_if_exist:nnTF {#1} {#2}
+          { \clist_put_right:cn { l__cdcmd_curr_condition@ #1 _clist } {#2} }
+          { \msg_warning:nnnn { cdcmd } { condition-id-not-exist } {#1} {#2} }
+      }
+      { \msg_warning:nnn { cdcmd } { condition-not-exist } }
+  }
+\cs_new_nopar:Npn \cdcmd_set_cdcmd_all:n #1
+  {
+    \cdcmd_if_exist:nTF {#1}
+      {
+        \clist_set_eq:cc 
+          { l__cdcmd_curr_condition@ #1 _clist }
+          { c__cdcmd_condition@ #1 _clist }
+      }
+      { \msg_warning:nnn { cdcmd } { condition-not-exist } {#1} }
+  }
+\cs_new_nopar:Npn \cdcmd_set:n 
+  { \keyval_parse:NNn \cdcmd_set_cdcmd_all:n \cdcmd_set:nn }
+\cs_new_nopar:Npn \cdcmd_clear_set:n #1
+  {
+    \bool_set_true:N \l__cdcmd_clear_set_bool
+    \keyval_parse:NNn \cdcmd_set_cdcmd_all:n \cdcmd_set:nn {#1}
+    \bool_set_false:N \l__cdcmd_clear_set_bool
+  }
+%    \end{macrocode}
+% \end{macro}
+% \begin{macro}[pTF]{
+%  \cdcmd_any_if:n,
+%  \cdcmd_any_if:o,
+%  \cdcmd_any_if:V,
+%  \cdcmd_any_if:f,
+% }
+%    \begin{macrocode}
+\cs_new:Npn \cdcmd_any_if:nTF #1
+  {
+    \bool_if:nTF
+      {
+        \keyval_parse:NNn 
+          \__cdcmd_any_i:n \__cdcmd_any_ii:nn {#1}
+        \c_false_bool
+      }
+  }
+\cs_new:Npn \cdcmd_any_if_p:n #1
+  {
+    \bool_if_p:n
+      {
+        \keyval_parse:NNn 
+          \__cdcmd_any_i:n \__cdcmd_any_ii:nn {#1}
+        \c_false_bool
+      }
+  }
+\cs_new:Npn \cdcmd_any_if:nT #1#2 { \cdcmd_any_if:nTF {#1} {#2} { } }
+\cs_new:Npn \cdcmd_any_if:nF #1   { \cdcmd_any_if:nTF {#1} { } }
+\cs_new:Npn \cdcmd_any_if:nFT #1#2#3 { \cdcmd_any_if:nTF {#1} {#3} {#2} }
+\prg_generate_conditional_variant:Nnn \cdcmd_any_if:n { o, V, f } { p, T, F, TF }
+\cs_new:Npn \__cdcmd_any_i:n #1 
+  { 
+    \str_if_eq:eeTF {#1} { \c_cdcmd_all_str }
+      { \c_true_bool || }
+      { \cdcmd_if_exist:nT {#1} { \c_true_bool || } }
+  }
+\cs_new:Npn \__cdcmd_any_ii:nn #1#2
+  { 
+    \cdcmd_if_exist:nT {#1}
+      {
+        \clist_map_tokens:nn {#2} 
+          { \__cdcmd_any_ii_aux:nn {#1} }
+      }
+  }
+\cs_new:Npn \__cdcmd_any_ii_aux:nn #1#2
+  {
+    \str_if_eq:eeTF {#2} { \c_cdcmd_all_str }
+      { \clist_map_break:n { \tex_the:D \c_true_bool || } }
+      {
+        \__cdcmd_clist_if_in:cnT { l__cdcmd_curr_condition@ #1 _clist } {#2}
+          { \clist_map_break:n { \tex_the:D \c_true_bool || } }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+% \begin{macro}[pTF]{
+%  \cdcmd_all_if:n,
+%  \cdcmd_all_if:o,
+%  \cdcmd_all_if:V,
+%  \cdcmd_all_if:f,
+% }
+%    \begin{macrocode}
+\cs_new:Npn \cdcmd_all_if:nTF #1
+  {
+    \bool_if:nTF 
+      { 
+        \keyval_parse:NNn 
+          \__cdcmd_all_i:n \__cdcmd_all_ii:nn {#1} 
+        \c_true_bool
+      }
+  }
+\cs_new:Npn \cdcmd_all_if_p:n #1
+  {
+    \bool_if_p:n 
+      {
+        \keyval_parse:NNn 
+          \__cdcmd_all_i:n \__cdcmd_all_ii:nn {#1} 
+        \c_true_bool
+      }
+  }
+\cs_new:Npn \cdcmd_all_if:nT #1#2 { \cdcmd_all_if:nTF {#1} {#2} { } }
+\cs_new:Npn \cdcmd_all_if:nF #1   { \cdcmd_all_if:nTF {#1} { } }
+\cs_new:Npn \cdcmd_all_if:nFT #1#2#3 { \cdcmd_all_if:nTF {#1} {#3} {#2} }
+\prg_generate_conditional_variant:Nnn \cdcmd_all_if:n { o, V, f } { p, T, F, TF }
+\cs_new:Npn \__cdcmd_all_i:n #1
+  { 
+    \str_if_eq:eeF {#1} { \c_cdcmd_all_str }
+      { \cdcmd_if_exist:nF {#1} { \c_false_bool && } }
+  }
+\cs_new:Npn \__cdcmd_all_ii:nn #1#2
+  {
+    \cdcmd_if_exist:nTF {#1}
+      {
+        \bool_lazy_and_p:nn
+          { \int_compare_p:n { \clist_count:n {#2} > 0 } }
+          { 
+            \int_compare_p:n 
+              { \clist_map_tokens:nn {#2} { \__cdcmd_all_ii_aux:nn {#1} } 1 > 0 } 
+          } &&
+      }
+      { \c_false_bool && }
+  }
+\cs_new:Npn \__cdcmd_all_ii_aux:nn #1#2
+  {
+    \str_if_eq:eeF {#2} { \c_cdcmd_all_str }
+      {
+        \__cdcmd_clist_if_in:cnF { l__cdcmd_curr_condition@ #1 _clist } {#2}
+          { \clist_map_break:n { - } }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+% \begin{macro}[pTF]{
+%  \__cdcmd_clist_if_in:Nn,
+%  \__cdcmd_clist_if_in:NV,
+%  \__cdcmd_clist_if_in:No,
+%  \__cdcmd_clist_if_in:cn,
+%  \__cdcmd_clist_if_in:cV,
+%  \__cdcmd_clist_if_in:co,
+%  \__cdcmd_clist_if_in:nn,
+%  \__cdcmd_clist_if_in:nV,
+%  \__cdcmd_clist_if_in:no,
+% }
+%    \begin{macrocode}
+\prg_new_conditional:Npnn \__cdcmd_clist_if_in:Nn #1#2 { p, T, F, TF }
+  {
+    \int_compare:nTF 
+      { 0 \clist_map_tokens:Nn #1 { \__cdcmd_if_eq_break:ee {#2} } > 0 }
+      { \prg_return_true: } { \prg_return_false: }
+  }
+\prg_generate_conditional_variant:Nnn \__cdcmd_clist_if_in:Nn 
+  { NV, No, cn, cV, co } { p, T, F, TF }
+\prg_new_conditional:Npnn \__cdcmd_clist_if_in:nn #1#2 { p, T, F, TF }
+  {
+    \int_compare:nTF 
+      { 0 \clist_map_tokens:nn {#1} { \__cdcmd_if_eq_break:ee {#2} } > 0 }
+      { \prg_return_true: } { \prg_return_false: }
+  }
+\prg_generate_conditional_variant:Nnn \__cdcmd_clist_if_in:nn { nV, no } { p, T, F, TF }
+\cs_new:Npn \__cdcmd_if_eq_break:ee #1#2
+  {
+    \str_if_eq:eeT {#1} {#2} { \clist_map_break:n { 1 } }
+  }
+%    \end{macrocode}
+% \end{macro}
+% \begin{macro}[TF]{
+%  \cdcmd_any_case_true:n,
+%  \cdcmd_any_case_false:n,
+%  \cdcmd_all_case_true:n,
+%  \cdcmd_all_case_false:n,
+% }
+% Conditional case, see also \cs{bool_case_true:n} and \cs{bool_case_false:n} in \pkg{source3.pdf}.
+%    \begin{macrocode}
+\scan_new:N \s__cdcmd_mark
+\scan_new:N \s__cdcmd_stop
+\cs_new:Npn \cdcmd_any_case_true:nTF { \exp:w \__cdcmd_any_case_true:nTF }
+\cs_new:Npn \cdcmd_any_case_true:n #1 { \exp:w \__cdcmd_any_case_true:nTF {#1} { } { } }
+\cs_new:Npn \cdcmd_all_case_true:nTF { \exp:w \__cdcmd_all_case_true:nTF }
+\cs_new:Npn \cdcmd_all_case_true:n #1 { \exp:w \__cdcmd_all_case_true:nTF {#1} { } { } }
+\cs_new:Npn \cdcmd_any_case_false:nTF { \exp:w \__cdcmd_any_case_false:nTF }
+\cs_new:Npn \cdcmd_any_case_false:n #1 { \exp:w \__cdcmd_any_case_false:nTF {#1} { } { } }
+\cs_new:Npn \cdcmd_all_case_false:nTF { \exp:w \__cdcmd_all_case_false:nTF }
+\cs_new:Npn \cdcmd_all_case_false:n #1 { \exp:w \__cdcmd_all_case_false:nTF {#1} { } { } }
+\cs_new:Npn \__cdcmd_any_case_true:nTF #1#2#3
+  {
+    \__cdcmd_case:Nw \cdcmd_any_if:nTF #1 { * } { }
+      \s__cdcmd_mark {#2} \s__cdcmd_mark {#3} \s__cdcmd_stop
+  }
+\cs_new:Npn \__cdcmd_all_case_true:nTF #1#2#3
+  {
+    \__cdcmd_case:Nw \cdcmd_all_if:nTF #1 { * } { }
+      \s__cdcmd_mark {#2} \s__cdcmd_mark {#3} \s__cdcmd_stop
+  }
+\cs_new:Npn \__cdcmd_any_case_false:nTF #1#2#3
+  {
+    \__cdcmd_case:Nw \cdcmd_any_if:nFT #1 { * } { }
+      \s__cdcmd_mark {#2} \s__cdcmd_mark {#3} \s__cdcmd_stop
+  }
+\cs_new:Npn \__cdcmd_all_case_false:nTF #1#2#3
+  {
+    \__cdcmd_case:Nw \cdcmd_all_if:nFT #1 { * } { }
+      \s__cdcmd_mark {#2} \s__cdcmd_mark {#3} \s__cdcmd_stop
+  }
+\cs_new:Npn \__cdcmd_case:Nw #1#2#3
+  { #1 {#2} { \__cdcmd_case_end:nw {#3} } { \__cdcmd_case:Nw #1 } }
+\cs_new:Npn \__cdcmd_case_end:nw #1#2#3 \s__cdcmd_mark #4#5 \s__cdcmd_stop
+  { \exp_end: #1 #4 }
+%    \end{macrocode}
+% \end{macro}
+% \begin{macro}{\newcondition,\setcondition,\clearcondition}
+% Conditional setting command for document.
+%    \begin{macrocode}
+\NewDocumentCommand \newcondition { >{ \TrimSpaces } m } { \cdcmd_new:nn {#1} }
+\NewDocumentCommand \setcondition { t+ }
+  { \IfBooleanTF {#1} { \cdcmd_set:n } { \cdcmd_clear_set:n } }
+\NewDocumentCommand \clearcondition { !O{*} }
+  {
+    \clist_map_inline:nn {#1}
+      {
+        \str_if_eq:eeTF {##1} { \c_cdcmd_all_str }
+          {
+            \clist_map_break:n 
+              { \exp_after:wN \clearcondition \exp_after:wN [ \g__cdcmd_clist ] }
+          }
+          { 
+            \cdcmd_if_exist:nTF {##1}
+              { \clist_clear:c { l__cdcmd_curr_condition@ ##1 _clist } }
+              { \msg_warning:nnn { cdcmd } { condition-not-exist } {##1} }
+          }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%    \begin{macrocode}
+\NewExpandableDocumentCommand \econditionif { s O{*} +m +m }
+  { 
+    \IfBooleanTF {#1}
+      { \cdcmd_all_if:nTF }
+      { \cdcmd_any_if:nTF }
+        {#2} {#3} {#4}
+  }
+\NewExpandableDocumentCommand \econditioncmd { s O{*} +m }
+  {
+    \IfBooleanTF {#1}
+      { \cdcmd_all_if:nTF }
+      { \cdcmd_any_if:nTF }
+        {#2} {#3} { }
+  }
+\NewExpandableDocumentCommand \econditioncase { s +m }
+  {
+    \IfBooleanTF {#1}
+      { \cdcmd_all_case:n {#2} }
+      { \cdcmd_any_case:n {#2} }
+  }
+\NewExpandableDocumentCommand \econditioncaseTF { s +m }
+  {
+    \IfBooleanTF {#1}
+      { \cdcmd_all_case:nTF {#2} }
+      { \cdcmd_any_case:nTF {#2} }
+  }
+\NewDocumentCommand \conditionif { s O{*} +m +m }
+  { 
+    \IfBooleanTF {#1}
+      { \cdcmd_all_if:nTF }
+      { \cdcmd_any_if:nTF }
+        {#2} {#3} {#4}
+  }
+\NewDocumentCommand \conditioncmd { s O{*} +m }
+  {
+    \IfBooleanTF {#1}
+      { \cdcmd_all_if:nTF }
+      { \cdcmd_any_if:nTF }
+        {#2} {#3} { }
+  }
+\NewDocumentCommand \conditioncase { s t! +m }
+  {
+    \IfBooleanTF {#2}
+      {
+        \IfBooleanTF {#1}
+          { \cdcmd_all_case_false:n {#3} }
+          { \cdcmd_any_case_false:n {#3} }
+      }
+      {
+        \IfBooleanTF {#1}
+          { \cdcmd_all_case_true:n {#3} }
+          { \cdcmd_any_case_true:n {#3} }
+      }
+  }
+\NewDocumentCommand \conditioncaseTF { s t! +m }
+  {
+    \IfBooleanTF {#2}
+      {
+        \IfBooleanTF {#1}
+          { \cdcmd_all_case_false:nTF {#3} }
+          { \cdcmd_any_case_false:nTF {#3} }
+      }
+      {
+        \IfBooleanTF {#1}
+          { \cdcmd_all_case_true:nTF {#3} }
+          { \cdcmd_any_case_true:nTF {#3} }
+      }
+  }
+%    \end{macrocode}
+% \begin{macro}{}
+% Define new \pkg{xparse} like conditional command.
+%    \begin{macrocode}
+\str_const:Nn \c_cdcmd_pair_u_str { cdcmd@u@ }
+\str_const:Nn \c_cdcmd_pair_n_str { cdcmd@n@ }
+\cs_new_nopar:Npn \__cdcmd_cs_pair_u:N #1
+  { \c_cdcmd_pair_u_str \cs_to_str:N #1 }
+\cs_new_nopar:Npn \__cdcmd_cs_pair_n:N #1
+  { \c_cdcmd_pair_n_str \cs_to_str:N #1 }
+\cs_new:Npn \__cdcmd_arg_spec_from_num:nn #1#2
+  {
+    \if_case:w 0#1 \exp_stop_f:
+    \or: #2 \or: #2#2 \or: #2#2#2 \or: #2#2#2#2 \or: #2#2#2#2#2 \or: #2#2#2#2#2#2 
+    \or: #2#2#2#2#2#2#2 \or: #2#2#2#2#2#2#2#2 \else: #2#2#2#2#2#2#2#2#2 \fi:
+  }
+\cs_new_nopar:Npn \__cdcmd_cs_pair_u:Nn #1#2
+  {
+    \c_cdcmd_pair_u_str 
+    \cs_to_str:N #1 : 
+    \__cdcmd_arg_spec_from_num:nn {#2} { n }
+  }
+\cs_new_nopar:Npn \__cdcmd_cs_pair_n:Nn #1#2
+  {
+    \c_cdcmd_pair_n_str 
+    \cs_to_str:N #1 : 
+    \__cdcmd_arg_spec_from_num:nn {#2} { n }
+  }
+% do not check cs_if_free, let xparse do it
+\cs_new:Npn \__cdcmd_new_cdcmd_command:NN #1#2
+  {
+    \cs_new_protected:Npn #1 ##1##2##3
+      {
+        #2 ##1 { t+ m }
+          {
+            \IfBooleanTF {####1}
+              { \cdcmd_all_if:nTF }
+              { \cdcmd_any_if:nTF }
+                {####2} 
+                { \use:c { \__cdcmd_cs_pair_u:N ##1 } }
+                { \use:c { \__cdcmd_cs_pair_n:N ##1 } }
+          }
+        \exp_args:Nc #2 
+          { \__cdcmd_cs_pair_u:N ##1 } {##2} {##3}
+        \exp_args:Nc #2 
+          { \__cdcmd_cs_pair_n:N ##1 } {##2} { }
+      }
+  }
+\seq_const_from_clist:Nn \c__cdcmd_Command_seq
+  {
+    \NewDocumentCommand ,
+    \RenewDocumentCommand ,
+    \ProvideDocumentCommand ,
+    \DeclareDocumentCommand ,
+    \NewExpandableDocumentCommand ,
+    \RenewExpandableDocumentCommand ,
+    \ProvideExpandableDocumentCommand ,
+    \DeclareExpandableDocumentCommand ,
+  }
+\seq_const_from_clist:Nn \c__cdcmd_COMMAND_seq
+  {
+    \NewConditionCommand ,
+    \RenewConditionCommand ,
+    \ProvideConditionCommand ,
+    \DeclareConditionCommand ,
+    \NewExpandableConditionCommand ,
+    \RenewExpandableConditionCommand ,
+    \ProvideExpandableConditionCommand ,
+    \DeclareExpandableConditionCommand , 
+  }
+\seq_mapthread_function:NNN 
+  \c__cdcmd_COMMAND_seq
+  \c__cdcmd_Command_seq
+  \__cdcmd_new_cdcmd_command:NN
+%    \end{macrocode}
+% \end{macro}
+% \begin{macro}{}
+% Define \LaTeX{} like command.
+%    \begin{macrocode}
+% do not check cs_if_free, let xparse do it
+\cs_new:Npn \__cdcmd_new_cdcmd_cmd_no:nnn #1#2#3
+  {
+    \cs_new_protected:Npn #1 ##1##2##3
+      {
+        #3 ##1 { t+ m }
+          {
+            \IfBooleanTF {####1}
+              { \cdcmd_all_if:nTF }
+              { \cdcmd_any_if:nTF }
+                { ####2 }
+                { \use:c { \__cdcmd_cs_pair_u:Nn ##1 {##2} } }
+                { \use:c { \__cdcmd_cs_pair_n:Nn ##1 {##2} } }
+          }
+        #2 { \__cdcmd_cs_pair_u:Nn ##1 {##2} } {##3}
+        #2 { \__cdcmd_cs_pair_n:Nn ##1 {##2} } { }
+      }
+  }
+\cs_generate_variant:Nn \__cdcmd_new_cdcmd_cmd_no:nnn { xxx }
+\seq_const_from_clist:Nn \c__cdcmd_cmd_no_seq
+  { 
+    \cs_set_protected:cn , \cs_set_protected_nopar:cn ,
+    \cs_set_protected:cn , \cs_set_protected_nopar:cn ,
+    \cs_set_protected:cn , \cs_set_protected_nopar:cn ,
+    \cs_set:cn , \cs_set_nopar:cn , 
+    \cs_set:cn , \cs_set_nopar:cn , 
+    \cs_set:cn , \cs_set_nopar:cn , 
+  }
+\seq_const_from_clist:Nn \c__cdcmd_Cmd_no_seq
+  { 
+    \NewDocumentCommand , \NewDocumentCommand ,
+    \RenewDocumentCommand , \RenewDocumentCommand ,
+    \DeclareDocumentCommand , \DeclareDocumentCommand ,
+    \NewExpandableDocumentCommand , \NewExpandableDocumentCommand , 
+    \RenewExpandableDocumentCommand , \RenewExpandableDocumentCommand , 
+    \DeclareExpandableDocumentCommand , \DeclareExpandableDocumentCommand , 
+  }
+\seq_const_from_clist:Nn \c__cdcmd_CMD_no_seq
+  { 
+    \__cdcmd_new_cdcmd_p_l_num:Nnn , \__cdcmd_new_cdcmd_p_nl_num:Nnn ,
+    \__cdcmd_renew_cdcmd_p_l_num:Nnn , \__cdcmd_renew_cdcmd_p_nl_num:Nnn ,
+    \__cdcmd_declare_cdcmd_p_l_num:Nnn , \__cdcmd_declare_cdcmd_p_nl_num:Nnn ,
+    \__cdcmd_new_cdcmd_np_l_num:Nnn , \__cdcmd_new_cdcmd_np_nl_num:Nnn ,
+    \__cdcmd_renew_cdcmd_np_l_num:Nnn , \__cdcmd_renew_cdcmd_np_nl_num:Nnn ,
+    \__cdcmd_declare_cdcmd_np_l_num:Nnn , \__cdcmd_declare_cdcmd_np_nl_num:Nnn ,
+  }
+\int_step_inline:nn { 6 }
+  {
+    \__cdcmd_new_cdcmd_cmd_no:xxx
+      { \seq_item:Nn \c__cdcmd_CMD_no_seq {#1} }
+      { \seq_item:Nn \c__cdcmd_cmd_no_seq {#1} }
+      { \seq_item:Nn \c__cdcmd_Cmd_no_seq {#1} }
+  }
+\tl_new:N \l__cdcmd_arg_spec_tl
+\cs_new:Npn \__cdcmd_generate_arg_spec:nnn #1#2#3
+  {
+    \tl_set:Nn \l__cdcmd_arg_spec_tl { O{#2} }
+    \if_int_compare:w #1 > 1 \exp_stop_f:
+      \int_step_inline:nn {#1-1} { \tl_put_right:Nn \l__cdcmd_arg_spec_tl {#3} }
+    \fi:
+  }
+\cs_new:Npn \__cdcmd_new_cdcmd_cmd_o_aux:nn #1#2
+  {
+    \cs_new_protected:Npn #1 ##1##2##3##4##5
+      {
+        #2 ##1 { t+ m }
+          {
+            \IfBooleanTF{####1}
+              { \cdcmd_all_if:nTF }
+              { \cdcmd_any_if:nTF }
+                {####2}
+                { \use:c { \__cdcmd_cs_pair_u:N ##1 } }
+                { \use:c { \__cdcmd_cs_pair_n:N ##1 } }
+          }
+        \__cdcmd_generate_arg_spec:nnn {##2} {##3} {##5}
+        \exp_args:NcV #2 { \__cdcmd_cs_pair_u:N ##1 } \l__cdcmd_arg_spec_tl {##4}
+        \exp_args:NcV #2 { \__cdcmd_cs_pair_n:N ##1 } \l__cdcmd_arg_spec_tl { }
+      }
+  }
+\seq_const_from_clist:Nn \c__cdcmd_CMD_o_seq
+  { \NewDocumentCommand , \RenewDocumentCommand , \DeclareDocumentCommand }
+\seq_const_from_clist:Nn \c__cdcmd_cmd_o_seq
+  {
+    \__cdcmd_new_cdcmd_o_num:Nnnnn ,
+    \__cdcmd_renew_cdcmd_o_num:Nnnnn ,
+    \__cdcmd_declare_cdcmd_o_num:Nnnnn ,
+  }
+\seq_mapthread_function:NNN
+  \c__cdcmd_cmd_o_seq
+  \c__cdcmd_CMD_o_seq
+  \__cdcmd_new_cdcmd_cmd_o_aux:nn
+\cs_new_protected:Npn \__cdcmd_new_cdcmd_cmd_ne_aux:n #1
+  {
+    \exp_args:Nc \NewDocumentCommand { #1 conditioncommand } { s m O{0} o +m }
+      { 
+        \IfBooleanTF{##1}
+          {
+            \IfNoValueTF{##4}
+              { \use:c { __cdcmd_ #1 _cdcmd_p_nl_num:Nnn } ##2 {##3} {##5} }
+              { \use:c { __cdcmd_ #1 _cdcmd_o_num:Nnnnn } ##2 {##3} {##4} {##5} { m } }
+          }
+          {
+            \IfNoValueTF{##4}
+              { \use:c { __cdcmd_ #1 _cdcmd_p_l_num:Nnn } ##2 {##3} {##5} }
+              { \use:c { __cdcmd_ #1 _cdcmd_o_num:Nnnnn } ##2 {##3} {##4} {##5} { +m } }
+          }
+      }
+  }
+\clist_map_function:nN { new, renew, declare } \__cdcmd_new_cdcmd_cmd_ne_aux:n
+\NewDocumentCommand \provideconditioncommand { s m O{0} o +m }
+  {
+    \cs_if_free:NT #2
+      {
+        \IfBooleanTF{#1}
+          {
+            \IfNoValueTF{#4}
+              { \newconditioncommand * #2 [#3] {#5} }
+              { \newconditioncommand * #2 [#3] [#4] {#5} }
+          }
+          {
+            \IfNoValueTF{#4}
+              { \newconditioncommand #2 [#3] {#5} }
+              { \newconditioncommand #2 [#3] [#4] {#5} }
+          }
+      }
+  }
+
+\int_step_inline:nnnn { 7 } { 1 } { 12 }
+  {
+    \__cdcmd_new_cdcmd_cmd_no:xxx
+      { \seq_item:Nn \c__cdcmd_CMD_no_seq {#1} }
+      { \seq_item:Nn \c__cdcmd_cmd_no_seq {#1} }
+      { \seq_item:Nn \c__cdcmd_Cmd_no_seq {#1} }
+  }
+
+\cs_new_protected:Npn \__cdcmd_new_cdcmd_cmd_e_no_aux:n #1
+  {
+    \exp_args:Nc \NewDocumentCommand { #1 econditioncommand } { s m O{0} +m }
+      {
+        \IfBooleanTF{##1}
+          { \use:c { __cdcmd_ #1 _cdcmd_np_nl_num:Nnn } ##2 {##3} {##4} }
+          { \use:c { __cdcmd_ #1 _cdcmd_np_l_num:Nnn } ##2 {##3} {##4} }
+      }
+  }
+\clist_map_function:nN { new, renew, declare } \__cdcmd_new_cdcmd_cmd_e_no_aux:n 
+\NewDocumentCommand \provideeconditioncommand { s m O{0} +m }
+  {
+    \cs_if_free:NT #2
+      {
+        \IfBooleanTF{#1}
+          { \neweconditioncommand * #2 [#3] {#4} }
+          { \neweconditioncommand #2 [#2] {#4} }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%    \begin{macrocode}
+%</package>
+%    \end{macrocode}
+%
+% \end{implementation}
+%
+% \endinput
+%
+%<*test>
+{\color{red!90!black}
+\begin{verbatim}
+  \newcondition{defined}{}
+  \newcondition{paper}{a4,a5,b5}
+  \setcondition{paper={a5,b5}}
+\end{verbatim}
+}
+
+{
+\newcondition{defined}{}
+\newcondition{paper}{a4,a5,b5}
+\setcondition{paper={a5,b5}}
+\def\cdcmdtest#1->#2 /{\textcolor{red!90!black}{\detokenize{#1}}:~ #1 \newline}
+\parindent=0pt\ttfamily
+\cdcmdtest\conditionif[*]{t}{f}->t /
+\cdcmdtest\conditionif[defined]{t}{f}->t /
+\cdcmdtest\conditionif[defined=]{t}{f}->f /
+\cdcmdtest\conditionif[defined=*]{t}{f}->t /
+\cdcmdtest\conditionif[defined=a]{t}{f}->f /
+\cdcmdtest\conditionif[paper={a5,a0},undefined]{t}{f}->t /
+
+\cdcmdtest\conditionif*[*]{t}{f}->t /
+\cdcmdtest\conditionif*[defined]{t}{f}->t /
+\cdcmdtest\conditionif*[defined={,,}]{t}{f}->f /
+\cdcmdtest\conditionif*[defined=*]{t}{f}->t /
+\cdcmdtest\conditionif*[defined=a]{t}{f}->f /
+\cdcmdtest\conditionif*[paper={a5,a0},undefined]{t}{f}->f /
+\cdcmdtest\conditionif*[*,undefined]{t}{f}->f /
+\cdcmdtest\conditionif*[paper={a5,b5}]{t}{f}->t /
+\cdcmdtest\conditionif*[paper={a5,,b5}]{t}{f}->t /
+\cdcmdtest\conditionif*[paper={a5,b6,a5}]{t}{f}->f /
+\cdcmdtest\conditionif*[paper={a5,{ },45}]{t}{f}->f /
+\cdcmdtest\conditionif*[*,defined,paper={a5,b5}]{t}{f}->t /
+}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \def\truetext{true} \def\falsetext{false}
+  \edef\testa{\econditionif[*]{true}{false}}
+  \ifx\testa\truetext t\else f\fi
+  \ifx\testa\falsetext t\else f\fi
+  \strcmp {\econditionif[*]{true}{false}} {true}
+  \strcmp {\econditionif[*]{true}{false}} {false}
+  \strcmp {\testa} {\truetext}
+  \strcmp {\testa} {\falsetext}
+\end{verbatim}
+}
+\def\truetext{true} \def\falsetext{false}
+\edef\testa{\econditionif[*]{true}{false}}
+\ifx\testa\truetext t\else f\fi
+\ifx\testa\falsetext t\else f\fi
+\strcmp{\econditionif[*]{true}{false}}{true}
+\strcmp{\econditionif[*]{true}{false}}{false}
+\strcmp{\testa}{\truetext}
+\strcmp{\testa}{\falsetext}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \conditioncase{
+    {paper=a3} {a3}
+    {paper=a4} {a4}
+    {paper,defined} {pd}
+  }
+\end{verbatim}
+}
+\conditioncase{
+  {paper=a3} {a3}
+  {paper=a4} {a4}
+  {paper,defined} {pd}
+}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \conditioncaseTF{
+    {paper=a3} {a3}
+    {paper=a4} {a4}
+    {paper,defined} {pd}
+  }{true}{false}
+\end{verbatim}
+}
+\conditioncaseTF{
+  {paper=a3} {a3}
+  {paper=a4} {a4}
+  {paper,defined} {pd}
+}{true}{false}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \conditioncase!{
+    {paper=a3} {a3}
+    {paper=a4} {a4}
+    {paper,defined} {pd}
+  }
+\end{verbatim}
+}
+\conditioncase!{
+  {paper=a3} {a3}
+  {paper=a4} {a4}
+  {paper,defined} {pd}
+}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \conditioncaseTF!{
+    {paper=a3} {a3}
+    {paper=a4} {a4}
+    {paper,defined} {pd}
+  }{true}{false}
+\end{verbatim}
+}
+\conditioncaseTF!{
+  {paper=a3} {a3}
+  {paper=a4} {a4}
+  {paper,defined} {pd}
+}{true}{false}
+
+{\color{red!90!black}
+\begin{verbatim}
+  \newconditioncommand\longprotectedcdcmd{longprotectedcdcmd}
+  \newconditioncommand\longprotectedcdcmdi[1]{longprotectedcdcmdi<#1>}
+  \newconditioncommand\longprotectedcdcmdio[1][DFT]{longprotectedcdcmdio<#1>}
+  \newconditioncommand*\shortprotectedcdcmd{shortprotectedcdcmd}
+  \newconditioncommand*\shortprotectedcdcmdi[1]{shortprotectedcdcmdi<#1>}
+  \newconditioncommand*\shortprotectedcdcmdio[1][DFT]{shortprotectedcdcmdio<#1>}
+
+  \setcondition{paper={a4,a5}}
+  \longprotectedcdcmd{*}
+  \longprotectedcdcmdi{*}{1\par arg}
+  \longprotectedcdcmdio{*}
+  \longprotectedcdcmdio{*}[1opt]
+  \longprotectedcdcmdio{paper=a4}[1opt a4]
+  \longprotectedcdcmdio+{paper={a4,a7}}[1opt a4a7]
+  \shortprotectedcdcmd{*}
+  \shortprotectedcdcmdi{*}{1\par arg}
+  \shortprotectedcdcmdio{*}
+  \shortprotectedcdcmdio{*}[1opt]
+  \shortprotectedcdcmdio{paper=a4}[1opt a4]
+  \shortprotectedcdcmdio+{paper={a4,a7}}[1opt a4a7]
+\end{verbatim}
+}
+\newconditioncommand\longprotectedcdcmd{longprotectedcdcmd}
+\newconditioncommand\longprotectedcdcmdi[1]{longprotectedcdcmdi<#1>}
+\newconditioncommand\longprotectedcdcmdio[1][DFT]{longprotectedcdcmdio<#1>}
+\newconditioncommand*\shortprotectedcdcmd{shortprotectedcdcmd}
+\newconditioncommand*\shortprotectedcdcmdi[1]{shortprotectedcdcmdi<#1>}
+\newconditioncommand*\shortprotectedcdcmdio[1][DFT]{shortprotectedcdcmdio<#1>}
+
+{\ttfamily\setcondition{paper={a4,a5}}\obeylines
+\longprotectedcdcmd{*}
+\longprotectedcdcmdi{*}{1\par arg}
+\longprotectedcdcmdio{*}
+\longprotectedcdcmdio{*}[1opt]
+\longprotectedcdcmdio{paper=a4}[1opt a4]
+\longprotectedcdcmdio+{paper={a4,a7}}[1opt a4a7]
+\shortprotectedcdcmd{*}
+\shortprotectedcdcmdi{*}{1arg}
+\shortprotectedcdcmdio{*}
+\shortprotectedcdcmdio{*}[1opt]
+\shortprotectedcdcmdio{paper=a4}[1opt a4]
+\shortprotectedcdcmdio+{paper={a4,a7}}[1opt a4a7]
+}
+%</test>
\ No newline at end of file
diff --git a/Master/texmf-dist/source/latex/cdcmd/cdcmd.ins b/Master/texmf-dist/source/latex/cdcmd/cdcmd.ins
new file mode 100644
index 00000000000..7031179eb6f
--- /dev/null
+++ b/Master/texmf-dist/source/latex/cdcmd/cdcmd.ins
@@ -0,0 +1,73 @@
+%% Copyright (C) 2021--2021
+%% Wenjian Chern (Longaster) and any individual authors listed elsewhere in this file.
+%% --------------------------------------------------------------------------
+%%
+%% This work may be distributed and/or modified under the
+%% conditions of the LaTeX Project Public License, either
+%% version 1.3c of this license or (at your option) any later
+%% version. This version of this license is in
+%%    http://www.latex-project.org/lppl/lppl-1-3c.txt
+%% and the latest version of this license is in
+%%    http://www.latex-project.org/lppl.txt
+%% and version 1.3 or later is part of all distributions of
+%% LaTeX version 2005/12/01 or later.
+%%
+%% This work has the LPPL maintenance status `maintained'.
+%%
+%% The Current Maintainers of this work are Wenjian Chern (Longaster).
+%% --------------------------------------------------------------------------
+\input l3docstrip.tex %
+\askforoverwritefalse
+\keepsilent
+\preamble
+
+    Copyright (C) 2021--2021
+    Wenjian Chern (Longaster) and any individual authors listed elsewhere in this file.
+ --------------------------------------------------------------------------
+
+    This work may be distributed and/or modified under the
+    conditions of the LaTeX Project Public License, either
+    version 1.3c of this license or (at your option) any later
+    version. This version of this license is in
+        http://www.latex-project.org/lppl/lppl-1-3c.txt
+    and the latest version of this license is in
+        http://www.latex-project.org/lppl.txt
+    and version 1.3 or later is part of all distributions of
+    LaTeX version 2005/12/01 or later.
+
+    This work has the LPPL maintenance status `maintained'.
+
+    The Current Maintainers of this work are Wenjian Chern (Longaster).
+ --------------------------------------------------------------------------
+
+\endpreamble
+
+\postamble
+
+    This work consists of the file  cdcmd.dtx,
+              and the derived files cdcmd.pdf,
+                                    cdcmd.sty,
+                                    cdcmd-cn.tex,
+                                    cdcmd-cn.pdf,
+                                    cdcmd-test.tex,
+                                    cdcmd.ins and
+                                    README.md
+\endpostamble
+
+\generate{
+    \usedir{tex/latex/cdcmd}
+    \file{cdcmd.sty}     {\from{\jobname.dtx}{package}}
+    \nopreamble\nopostamble
+    \usedir{tex/latex/cdcmd}
+    \file{cdcmd-test.tex}{\from{\jobname.dtx}{test}}
+    \file{README.md}     {\from{\jobname.dtx}{readme}}
+}
+
+\endbatchfile
+%%
+%%    This work consists of the file  cdcmd.dtx,
+%%              and the derived files cdcmd.pdf,
+%%                                    cdcmd.sty,
+%%                                    cdcmd.ins and
+%%                                    README.md
+%% End of file `cdcmd.ins'.
\ No newline at end of file
diff --git a/Master/texmf-dist/tex/latex/cdcmd/cdcmd.sty b/Master/texmf-dist/tex/latex/cdcmd/cdcmd.sty
new file mode 100644
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--- /dev/null
+++ b/Master/texmf-dist/tex/latex/cdcmd/cdcmd.sty
@@ -0,0 +1,571 @@
+%%
+%% This is file `cdcmd.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% cdcmd.dtx  (with options: `package')
+%% 
+%%     Copyright (C) 2021--2021
+%%     Wenjian Chern (Longaster) and any individual authors listed elsewhere in this file.
+%%  --------------------------------------------------------------------------
+%% 
+%%     This work may be distributed and/or modified under the
+%%     conditions of the LaTeX Project Public License, either
+%%     version 1.3c of this license or (at your option) any later
+%%     version. This version of this license is in
+%%         http://www.latex-project.org/lppl/lppl-1-3c.txt
+%%     and the latest version of this license is in
+%%         http://www.latex-project.org/lppl.txt
+%%     and version 1.3 or later is part of all distributions of
+%%     LaTeX version 2005/12/01 or later.
+%% 
+%%     This work has the LPPL maintenance status `maintained'.
+%% 
+%%     The Current Maintainers of this work are Wenjian Chern (Longaster).
+%%  --------------------------------------------------------------------------
+%% 
+\NeedsTeXFormat{LaTeX2e}
+\RequirePackage{expl3}[2021/05/11]
+\GetIdInfo$Id: cdcmd.dtx 1.0 2021/10/12 +0815 Longaster$
+  {Expandable Conditional Command In LaTeX2e}
+\ProvidesExplPackage{cdcmd}
+  {\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
+\str_const:Nn \c_cdcmd_all_str { * }
+\clist_new:N \g__cdcmd_clist
+\bool_new:N \l__cdcmd_clear_set_bool
+\msg_new:nnn { cdcmd } { condition-exist }
+  { The~ condition~ `#1'~ you~ try~ to~ new~ already~ exists. }
+\msg_new:nnn { cdcmd } { condition-not-exist }
+  { The~ condition~ `#1'~ not~ exists. }
+\msg_new:nnn { cdcmd } { condition-id-not-exist }
+  { The~ id~ `#2' of~ condition~ `#1'~ not~ exists. }
+\prg_new_conditional:Npnn \cdcmd_if_exist:n #1 { p, T, F, TF }
+  {
+    \clist_if_exist:cTF { c__cdcmd_condition@ #1 _clist }
+      { \prg_return_true: } { \prg_return_false: }
+  }
+\prg_new_conditional:Npnn \cdcmd_cd_id_if_exist:nn #1#2 { T, F, TF }
+  {
+    \clist_if_in:cnTF { c__cdcmd_condition@ #1 _clist } {#2}
+      { \prg_return_true: } { \prg_return_false: }
+  }
+\cs_new_nopar:Npn \cdcmd_new:nn #1#2
+  {
+    \cdcmd_if_exist:nTF {#1}
+      { \msg_error:nnn { cdcmd } { condition-exist } {#1} }
+      {
+        \clist_gput_right:Nn \g__cdcmd_clist {#1}
+        \clist_const:cn { c__cdcmd_condition@ #1 _clist } {#2}
+        \clist_new:c { l__cdcmd_curr_condition@ #1 _clist }
+      }
+  }
+\cs_new_nopar:Npn \cdcmd_set:nn #1#2
+  {
+    \cdcmd_if_exist:nTF {#1}
+      {
+        \bool_if:NT \l__cdcmd_clear_set_bool
+          { \clist_clear:c { l__cdcmd_curr_condition@ #1 _clist } }
+        \clist_map_inline:nn {#2}
+          {
+            \str_if_eq:eeTF {##1} { \c_cdcmd_all_str }
+              { \clist_map_break:n { \cdcmd_set_cdcmd_all:n {#1} } }
+              { \cdcmd_set_cdcmd_single:nn {#1} {##1} }
+          }
+      }
+      { \msg_warning:nnn { cdcmd } { condition-not-exist } {#1} }
+  }
+\cs_new_nopar:Npn \cdcmd_set_cdcmd_single:nn #1#2
+  {
+    \cdcmd_if_exist:nTF {#1}
+      {
+        \cdcmd_cd_id_if_exist:nnTF {#1} {#2}
+          { \clist_put_right:cn { l__cdcmd_curr_condition@ #1 _clist } {#2} }
+          { \msg_warning:nnnn { cdcmd } { condition-id-not-exist } {#1} {#2} }
+      }
+      { \msg_warning:nnn { cdcmd } { condition-not-exist } }
+  }
+\cs_new_nopar:Npn \cdcmd_set_cdcmd_all:n #1
+  {
+    \cdcmd_if_exist:nTF {#1}
+      {
+        \clist_set_eq:cc
+          { l__cdcmd_curr_condition@ #1 _clist }
+          { c__cdcmd_condition@ #1 _clist }
+      }
+      { \msg_warning:nnn { cdcmd } { condition-not-exist } {#1} }
+  }
+\cs_new_nopar:Npn \cdcmd_set:n
+  { \keyval_parse:NNn \cdcmd_set_cdcmd_all:n \cdcmd_set:nn }
+\cs_new_nopar:Npn \cdcmd_clear_set:n #1
+  {
+    \bool_set_true:N \l__cdcmd_clear_set_bool
+    \keyval_parse:NNn \cdcmd_set_cdcmd_all:n \cdcmd_set:nn {#1}
+    \bool_set_false:N \l__cdcmd_clear_set_bool
+  }
+\cs_new:Npn \cdcmd_any_if:nTF #1
+  {
+    \bool_if:nTF
+      {
+        \keyval_parse:NNn
+          \__cdcmd_any_i:n \__cdcmd_any_ii:nn {#1}
+        \c_false_bool
+      }
+  }
+\cs_new:Npn \cdcmd_any_if_p:n #1
+  {
+    \bool_if_p:n
+      {
+        \keyval_parse:NNn
+          \__cdcmd_any_i:n \__cdcmd_any_ii:nn {#1}
+        \c_false_bool
+      }
+  }
+\cs_new:Npn \cdcmd_any_if:nT #1#2 { \cdcmd_any_if:nTF {#1} {#2} { } }
+\cs_new:Npn \cdcmd_any_if:nF #1   { \cdcmd_any_if:nTF {#1} { } }
+\cs_new:Npn \cdcmd_any_if:nFT #1#2#3 { \cdcmd_any_if:nTF {#1} {#3} {#2} }
+\prg_generate_conditional_variant:Nnn \cdcmd_any_if:n { o, V, f } { p, T, F, TF }
+\cs_new:Npn \__cdcmd_any_i:n #1
+  {
+    \str_if_eq:eeTF {#1} { \c_cdcmd_all_str }
+      { \c_true_bool || }
+      { \cdcmd_if_exist:nT {#1} { \c_true_bool || } }
+  }
+\cs_new:Npn \__cdcmd_any_ii:nn #1#2
+  {
+    \cdcmd_if_exist:nT {#1}
+      {
+        \clist_map_tokens:nn {#2}
+          { \__cdcmd_any_ii_aux:nn {#1} }
+      }
+  }
+\cs_new:Npn \__cdcmd_any_ii_aux:nn #1#2
+  {
+    \str_if_eq:eeTF {#2} { \c_cdcmd_all_str }
+      { \clist_map_break:n { \tex_the:D \c_true_bool || } }
+      {
+        \__cdcmd_clist_if_in:cnT { l__cdcmd_curr_condition@ #1 _clist } {#2}
+          { \clist_map_break:n { \tex_the:D \c_true_bool || } }
+      }
+  }
+\cs_new:Npn \cdcmd_all_if:nTF #1
+  {
+    \bool_if:nTF
+      {
+        \keyval_parse:NNn
+          \__cdcmd_all_i:n \__cdcmd_all_ii:nn {#1}
+        \c_true_bool
+      }
+  }
+\cs_new:Npn \cdcmd_all_if_p:n #1
+  {
+    \bool_if_p:n
+      {
+        \keyval_parse:NNn
+          \__cdcmd_all_i:n \__cdcmd_all_ii:nn {#1}
+        \c_true_bool
+      }
+  }
+\cs_new:Npn \cdcmd_all_if:nT #1#2 { \cdcmd_all_if:nTF {#1} {#2} { } }
+\cs_new:Npn \cdcmd_all_if:nF #1   { \cdcmd_all_if:nTF {#1} { } }
+\cs_new:Npn \cdcmd_all_if:nFT #1#2#3 { \cdcmd_all_if:nTF {#1} {#3} {#2} }
+\prg_generate_conditional_variant:Nnn \cdcmd_all_if:n { o, V, f } { p, T, F, TF }
+\cs_new:Npn \__cdcmd_all_i:n #1
+  {
+    \str_if_eq:eeF {#1} { \c_cdcmd_all_str }
+      { \cdcmd_if_exist:nF {#1} { \c_false_bool && } }
+  }
+\cs_new:Npn \__cdcmd_all_ii:nn #1#2
+  {
+    \cdcmd_if_exist:nTF {#1}
+      {
+        \bool_lazy_and_p:nn
+          { \int_compare_p:n { \clist_count:n {#2} > 0 } }
+          {
+            \int_compare_p:n
+              { \clist_map_tokens:nn {#2} { \__cdcmd_all_ii_aux:nn {#1} } 1 > 0 }
+          } &&
+      }
+      { \c_false_bool && }
+  }
+\cs_new:Npn \__cdcmd_all_ii_aux:nn #1#2
+  {
+    \str_if_eq:eeF {#2} { \c_cdcmd_all_str }
+      {
+        \__cdcmd_clist_if_in:cnF { l__cdcmd_curr_condition@ #1 _clist } {#2}
+          { \clist_map_break:n { - } }
+      }
+  }
+\prg_new_conditional:Npnn \__cdcmd_clist_if_in:Nn #1#2 { p, T, F, TF }
+  {
+    \int_compare:nTF
+      { 0 \clist_map_tokens:Nn #1 { \__cdcmd_if_eq_break:ee {#2} } > 0 }
+      { \prg_return_true: } { \prg_return_false: }
+  }
+\prg_generate_conditional_variant:Nnn \__cdcmd_clist_if_in:Nn
+  { NV, No, cn, cV, co } { p, T, F, TF }
+\prg_new_conditional:Npnn \__cdcmd_clist_if_in:nn #1#2 { p, T, F, TF }
+  {
+    \int_compare:nTF
+      { 0 \clist_map_tokens:nn {#1} { \__cdcmd_if_eq_break:ee {#2} } > 0 }
+      { \prg_return_true: } { \prg_return_false: }
+  }
+\prg_generate_conditional_variant:Nnn \__cdcmd_clist_if_in:nn { nV, no } { p, T, F, TF }
+\cs_new:Npn \__cdcmd_if_eq_break:ee #1#2
+  {
+    \str_if_eq:eeT {#1} {#2} { \clist_map_break:n { 1 } }
+  }
+\scan_new:N \s__cdcmd_mark
+\scan_new:N \s__cdcmd_stop
+\cs_new:Npn \cdcmd_any_case_true:nTF { \exp:w \__cdcmd_any_case_true:nTF }
+\cs_new:Npn \cdcmd_any_case_true:n #1 { \exp:w \__cdcmd_any_case_true:nTF {#1} { } { } }
+\cs_new:Npn \cdcmd_all_case_true:nTF { \exp:w \__cdcmd_all_case_true:nTF }
+\cs_new:Npn \cdcmd_all_case_true:n #1 { \exp:w \__cdcmd_all_case_true:nTF {#1} { } { } }
+\cs_new:Npn \cdcmd_any_case_false:nTF { \exp:w \__cdcmd_any_case_false:nTF }
+\cs_new:Npn \cdcmd_any_case_false:n #1 { \exp:w \__cdcmd_any_case_false:nTF {#1} { } { } }
+\cs_new:Npn \cdcmd_all_case_false:nTF { \exp:w \__cdcmd_all_case_false:nTF }
+\cs_new:Npn \cdcmd_all_case_false:n #1 { \exp:w \__cdcmd_all_case_false:nTF {#1} { } { } }
+\cs_new:Npn \__cdcmd_any_case_true:nTF #1#2#3
+  {
+    \__cdcmd_case:Nw \cdcmd_any_if:nTF #1 { * } { }
+      \s__cdcmd_mark {#2} \s__cdcmd_mark {#3} \s__cdcmd_stop
+  }
+\cs_new:Npn \__cdcmd_all_case_true:nTF #1#2#3
+  {
+    \__cdcmd_case:Nw \cdcmd_all_if:nTF #1 { * } { }
+      \s__cdcmd_mark {#2} \s__cdcmd_mark {#3} \s__cdcmd_stop
+  }
+\cs_new:Npn \__cdcmd_any_case_false:nTF #1#2#3
+  {
+    \__cdcmd_case:Nw \cdcmd_any_if:nFT #1 { * } { }
+      \s__cdcmd_mark {#2} \s__cdcmd_mark {#3} \s__cdcmd_stop
+  }
+\cs_new:Npn \__cdcmd_all_case_false:nTF #1#2#3
+  {
+    \__cdcmd_case:Nw \cdcmd_all_if:nFT #1 { * } { }
+      \s__cdcmd_mark {#2} \s__cdcmd_mark {#3} \s__cdcmd_stop
+  }
+\cs_new:Npn \__cdcmd_case:Nw #1#2#3
+  { #1 {#2} { \__cdcmd_case_end:nw {#3} } { \__cdcmd_case:Nw #1 } }
+\cs_new:Npn \__cdcmd_case_end:nw #1#2#3 \s__cdcmd_mark #4#5 \s__cdcmd_stop
+  { \exp_end: #1 #4 }
+\NewDocumentCommand \newcondition { >{ \TrimSpaces } m } { \cdcmd_new:nn {#1} }
+\NewDocumentCommand \setcondition { t+ }
+  { \IfBooleanTF {#1} { \cdcmd_set:n } { \cdcmd_clear_set:n } }
+\NewDocumentCommand \clearcondition { !O{*} }
+  {
+    \clist_map_inline:nn {#1}
+      {
+        \str_if_eq:eeTF {##1} { \c_cdcmd_all_str }
+          {
+            \clist_map_break:n
+              { \exp_after:wN \clearcondition \exp_after:wN [ \g__cdcmd_clist ] }
+          }
+          {
+            \cdcmd_if_exist:nTF {##1}
+              { \clist_clear:c { l__cdcmd_curr_condition@ ##1 _clist } }
+              { \msg_warning:nnn { cdcmd } { condition-not-exist } {##1} }
+          }
+      }
+  }
+\NewExpandableDocumentCommand \econditionif { s O{*} +m +m }
+  {
+    \IfBooleanTF {#1}
+      { \cdcmd_all_if:nTF }
+      { \cdcmd_any_if:nTF }
+        {#2} {#3} {#4}
+  }
+\NewExpandableDocumentCommand \econditioncmd { s O{*} +m }
+  {
+    \IfBooleanTF {#1}
+      { \cdcmd_all_if:nTF }
+      { \cdcmd_any_if:nTF }
+        {#2} {#3} { }
+  }
+\NewExpandableDocumentCommand \econditioncase { s +m }
+  {
+    \IfBooleanTF {#1}
+      { \cdcmd_all_case:n {#2} }
+      { \cdcmd_any_case:n {#2} }
+  }
+\NewExpandableDocumentCommand \econditioncaseTF { s +m }
+  {
+    \IfBooleanTF {#1}
+      { \cdcmd_all_case:nTF {#2} }
+      { \cdcmd_any_case:nTF {#2} }
+  }
+\NewDocumentCommand \conditionif { s O{*} +m +m }
+  {
+    \IfBooleanTF {#1}
+      { \cdcmd_all_if:nTF }
+      { \cdcmd_any_if:nTF }
+        {#2} {#3} {#4}
+  }
+\NewDocumentCommand \conditioncmd { s O{*} +m }
+  {
+    \IfBooleanTF {#1}
+      { \cdcmd_all_if:nTF }
+      { \cdcmd_any_if:nTF }
+        {#2} {#3} { }
+  }
+\NewDocumentCommand \conditioncase { s t! +m }
+  {
+    \IfBooleanTF {#2}
+      {
+        \IfBooleanTF {#1}
+          { \cdcmd_all_case_false:n {#3} }
+          { \cdcmd_any_case_false:n {#3} }
+      }
+      {
+        \IfBooleanTF {#1}
+          { \cdcmd_all_case_true:n {#3} }
+          { \cdcmd_any_case_true:n {#3} }
+      }
+  }
+\NewDocumentCommand \conditioncaseTF { s t! +m }
+  {
+    \IfBooleanTF {#2}
+      {
+        \IfBooleanTF {#1}
+          { \cdcmd_all_case_false:nTF {#3} }
+          { \cdcmd_any_case_false:nTF {#3} }
+      }
+      {
+        \IfBooleanTF {#1}
+          { \cdcmd_all_case_true:nTF {#3} }
+          { \cdcmd_any_case_true:nTF {#3} }
+      }
+  }
+\str_const:Nn \c_cdcmd_pair_u_str { cdcmd@u@ }
+\str_const:Nn \c_cdcmd_pair_n_str { cdcmd@n@ }
+\cs_new_nopar:Npn \__cdcmd_cs_pair_u:N #1
+  { \c_cdcmd_pair_u_str \cs_to_str:N #1 }
+\cs_new_nopar:Npn \__cdcmd_cs_pair_n:N #1
+  { \c_cdcmd_pair_n_str \cs_to_str:N #1 }
+\cs_new:Npn \__cdcmd_arg_spec_from_num:nn #1#2
+  {
+    \if_case:w 0#1 \exp_stop_f:
+    \or: #2 \or: #2#2 \or: #2#2#2 \or: #2#2#2#2 \or: #2#2#2#2#2 \or: #2#2#2#2#2#2
+    \or: #2#2#2#2#2#2#2 \or: #2#2#2#2#2#2#2#2 \else: #2#2#2#2#2#2#2#2#2 \fi:
+  }
+\cs_new_nopar:Npn \__cdcmd_cs_pair_u:Nn #1#2
+  {
+    \c_cdcmd_pair_u_str
+    \cs_to_str:N #1 :
+    \__cdcmd_arg_spec_from_num:nn {#2} { n }
+  }
+\cs_new_nopar:Npn \__cdcmd_cs_pair_n:Nn #1#2
+  {
+    \c_cdcmd_pair_n_str
+    \cs_to_str:N #1 :
+    \__cdcmd_arg_spec_from_num:nn {#2} { n }
+  }
+\cs_new:Npn \__cdcmd_new_cdcmd_command:NN #1#2
+  {
+    \cs_new_protected:Npn #1 ##1##2##3
+      {
+        #2 ##1 { t+ m }
+          {
+            \IfBooleanTF {####1}
+              { \cdcmd_all_if:nTF }
+              { \cdcmd_any_if:nTF }
+                {####2}
+                { \use:c { \__cdcmd_cs_pair_u:N ##1 } }
+                { \use:c { \__cdcmd_cs_pair_n:N ##1 } }
+          }
+        \exp_args:Nc #2
+          { \__cdcmd_cs_pair_u:N ##1 } {##2} {##3}
+        \exp_args:Nc #2
+          { \__cdcmd_cs_pair_n:N ##1 } {##2} { }
+      }
+  }
+\seq_const_from_clist:Nn \c__cdcmd_Command_seq
+  {
+    \NewDocumentCommand ,
+    \RenewDocumentCommand ,
+    \ProvideDocumentCommand ,
+    \DeclareDocumentCommand ,
+    \NewExpandableDocumentCommand ,
+    \RenewExpandableDocumentCommand ,
+    \ProvideExpandableDocumentCommand ,
+    \DeclareExpandableDocumentCommand ,
+  }
+\seq_const_from_clist:Nn \c__cdcmd_COMMAND_seq
+  {
+    \NewConditionCommand ,
+    \RenewConditionCommand ,
+    \ProvideConditionCommand ,
+    \DeclareConditionCommand ,
+    \NewExpandableConditionCommand ,
+    \RenewExpandableConditionCommand ,
+    \ProvideExpandableConditionCommand ,
+    \DeclareExpandableConditionCommand ,
+  }
+\seq_mapthread_function:NNN
+  \c__cdcmd_COMMAND_seq
+  \c__cdcmd_Command_seq
+  \__cdcmd_new_cdcmd_command:NN
+\cs_new:Npn \__cdcmd_new_cdcmd_cmd_no:nnn #1#2#3
+  {
+    \cs_new_protected:Npn #1 ##1##2##3
+      {
+        #3 ##1 { t+ m }
+          {
+            \IfBooleanTF {####1}
+              { \cdcmd_all_if:nTF }
+              { \cdcmd_any_if:nTF }
+                { ####2 }
+                { \use:c { \__cdcmd_cs_pair_u:Nn ##1 {##2} } }
+                { \use:c { \__cdcmd_cs_pair_n:Nn ##1 {##2} } }
+          }
+        #2 { \__cdcmd_cs_pair_u:Nn ##1 {##2} } {##3}
+        #2 { \__cdcmd_cs_pair_n:Nn ##1 {##2} } { }
+      }
+  }
+\cs_generate_variant:Nn \__cdcmd_new_cdcmd_cmd_no:nnn { xxx }
+\seq_const_from_clist:Nn \c__cdcmd_cmd_no_seq
+  {
+    \cs_set_protected:cn , \cs_set_protected_nopar:cn ,
+    \cs_set_protected:cn , \cs_set_protected_nopar:cn ,
+    \cs_set_protected:cn , \cs_set_protected_nopar:cn ,
+    \cs_set:cn , \cs_set_nopar:cn ,
+    \cs_set:cn , \cs_set_nopar:cn ,
+    \cs_set:cn , \cs_set_nopar:cn ,
+  }
+\seq_const_from_clist:Nn \c__cdcmd_Cmd_no_seq
+  {
+    \NewDocumentCommand , \NewDocumentCommand ,
+    \RenewDocumentCommand , \RenewDocumentCommand ,
+    \DeclareDocumentCommand , \DeclareDocumentCommand ,
+    \NewExpandableDocumentCommand , \NewExpandableDocumentCommand ,
+    \RenewExpandableDocumentCommand , \RenewExpandableDocumentCommand ,
+    \DeclareExpandableDocumentCommand , \DeclareExpandableDocumentCommand ,
+  }
+\seq_const_from_clist:Nn \c__cdcmd_CMD_no_seq
+  {
+    \__cdcmd_new_cdcmd_p_l_num:Nnn , \__cdcmd_new_cdcmd_p_nl_num:Nnn ,
+    \__cdcmd_renew_cdcmd_p_l_num:Nnn , \__cdcmd_renew_cdcmd_p_nl_num:Nnn ,
+    \__cdcmd_declare_cdcmd_p_l_num:Nnn , \__cdcmd_declare_cdcmd_p_nl_num:Nnn ,
+    \__cdcmd_new_cdcmd_np_l_num:Nnn , \__cdcmd_new_cdcmd_np_nl_num:Nnn ,
+    \__cdcmd_renew_cdcmd_np_l_num:Nnn , \__cdcmd_renew_cdcmd_np_nl_num:Nnn ,
+    \__cdcmd_declare_cdcmd_np_l_num:Nnn , \__cdcmd_declare_cdcmd_np_nl_num:Nnn ,
+  }
+\int_step_inline:nn { 6 }
+  {
+    \__cdcmd_new_cdcmd_cmd_no:xxx
+      { \seq_item:Nn \c__cdcmd_CMD_no_seq {#1} }
+      { \seq_item:Nn \c__cdcmd_cmd_no_seq {#1} }
+      { \seq_item:Nn \c__cdcmd_Cmd_no_seq {#1} }
+  }
+\tl_new:N \l__cdcmd_arg_spec_tl
+\cs_new:Npn \__cdcmd_generate_arg_spec:nnn #1#2#3
+  {
+    \tl_set:Nn \l__cdcmd_arg_spec_tl { O{#2} }
+    \if_int_compare:w #1 > 1 \exp_stop_f:
+      \int_step_inline:nn {#1-1} { \tl_put_right:Nn \l__cdcmd_arg_spec_tl {#3} }
+    \fi:
+  }
+\cs_new:Npn \__cdcmd_new_cdcmd_cmd_o_aux:nn #1#2
+  {
+    \cs_new_protected:Npn #1 ##1##2##3##4##5
+      {
+        #2 ##1 { t+ m }
+          {
+            \IfBooleanTF{####1}
+              { \cdcmd_all_if:nTF }
+              { \cdcmd_any_if:nTF }
+                {####2}
+                { \use:c { \__cdcmd_cs_pair_u:N ##1 } }
+                { \use:c { \__cdcmd_cs_pair_n:N ##1 } }
+          }
+        \__cdcmd_generate_arg_spec:nnn {##2} {##3} {##5}
+        \exp_args:NcV #2 { \__cdcmd_cs_pair_u:N ##1 } \l__cdcmd_arg_spec_tl {##4}
+        \exp_args:NcV #2 { \__cdcmd_cs_pair_n:N ##1 } \l__cdcmd_arg_spec_tl { }
+      }
+  }
+\seq_const_from_clist:Nn \c__cdcmd_CMD_o_seq
+  { \NewDocumentCommand , \RenewDocumentCommand , \DeclareDocumentCommand }
+\seq_const_from_clist:Nn \c__cdcmd_cmd_o_seq
+  {
+    \__cdcmd_new_cdcmd_o_num:Nnnnn ,
+    \__cdcmd_renew_cdcmd_o_num:Nnnnn ,
+    \__cdcmd_declare_cdcmd_o_num:Nnnnn ,
+  }
+\seq_mapthread_function:NNN
+  \c__cdcmd_cmd_o_seq
+  \c__cdcmd_CMD_o_seq
+  \__cdcmd_new_cdcmd_cmd_o_aux:nn
+\cs_new_protected:Npn \__cdcmd_new_cdcmd_cmd_ne_aux:n #1
+  {
+    \exp_args:Nc \NewDocumentCommand { #1 conditioncommand } { s m O{0} o +m }
+      {
+        \IfBooleanTF{##1}
+          {
+            \IfNoValueTF{##4}
+              { \use:c { __cdcmd_ #1 _cdcmd_p_nl_num:Nnn } ##2 {##3} {##5} }
+              { \use:c { __cdcmd_ #1 _cdcmd_o_num:Nnnnn } ##2 {##3} {##4} {##5} { m } }
+          }
+          {
+            \IfNoValueTF{##4}
+              { \use:c { __cdcmd_ #1 _cdcmd_p_l_num:Nnn } ##2 {##3} {##5} }
+              { \use:c { __cdcmd_ #1 _cdcmd_o_num:Nnnnn } ##2 {##3} {##4} {##5} { +m } }
+          }
+      }
+  }
+\clist_map_function:nN { new, renew, declare } \__cdcmd_new_cdcmd_cmd_ne_aux:n
+\NewDocumentCommand \provideconditioncommand { s m O{0} o +m }
+  {
+    \cs_if_free:NT #2
+      {
+        \IfBooleanTF{#1}
+          {
+            \IfNoValueTF{#4}
+              { \newconditioncommand * #2 [#3] {#5} }
+              { \newconditioncommand * #2 [#3] [#4] {#5} }
+          }
+          {
+            \IfNoValueTF{#4}
+              { \newconditioncommand #2 [#3] {#5} }
+              { \newconditioncommand #2 [#3] [#4] {#5} }
+          }
+      }
+  }
+
+\int_step_inline:nnnn { 7 } { 1 } { 12 }
+  {
+    \__cdcmd_new_cdcmd_cmd_no:xxx
+      { \seq_item:Nn \c__cdcmd_CMD_no_seq {#1} }
+      { \seq_item:Nn \c__cdcmd_cmd_no_seq {#1} }
+      { \seq_item:Nn \c__cdcmd_Cmd_no_seq {#1} }
+  }
+
+\cs_new_protected:Npn \__cdcmd_new_cdcmd_cmd_e_no_aux:n #1
+  {
+    \exp_args:Nc \NewDocumentCommand { #1 econditioncommand } { s m O{0} +m }
+      {
+        \IfBooleanTF{##1}
+          { \use:c { __cdcmd_ #1 _cdcmd_np_nl_num:Nnn } ##2 {##3} {##4} }
+          { \use:c { __cdcmd_ #1 _cdcmd_np_l_num:Nnn } ##2 {##3} {##4} }
+      }
+  }
+\clist_map_function:nN { new, renew, declare } \__cdcmd_new_cdcmd_cmd_e_no_aux:n
+\NewDocumentCommand \provideeconditioncommand { s m O{0} +m }
+  {
+    \cs_if_free:NT #2
+      {
+        \IfBooleanTF{#1}
+          { \neweconditioncommand * #2 [#3] {#4} }
+          { \neweconditioncommand #2 [#2] {#4} }
+      }
+  }
+%% 
+%%     This work consists of the file  cdcmd.dtx,
+%%               and the derived files cdcmd.pdf,
+%%                                     cdcmd.sty,
+%%                                     cdcmd-cn.tex,
+%%                                     cdcmd-cn.pdf,
+%%                                     cdcmd-test.tex,
+%%                                     cdcmd.ins and
+%%                                     README.md
+%%
+%% End of file `cdcmd.sty'.
diff --git a/Master/tlpkg/bin/tlpkg-ctan-check b/Master/tlpkg/bin/tlpkg-ctan-check
index 31a09179853..eb8224f68e0 100755
--- a/Master/tlpkg/bin/tlpkg-ctan-check
+++ b/Master/tlpkg/bin/tlpkg-ctan-check
@@ -161,7 +161,7 @@ my @TLP_working = qw(
     catchfile catchfilebetweentags catcodes catechis catoptions causets
     cbcoptic cbfonts cbfonts-fd
     cc-pl ccaption ccfonts ccicons cclicenses ccool
-    cd cd-cover cdpbundl
+    cd cd-cover cdcmd cdpbundl
     cell cellprops cellspace celtic censor
     centeredline centerlastline cesenaexam
     cfr-initials cfr-lm
diff --git a/Master/tlpkg/libexec/ctan2tds b/Master/tlpkg/libexec/ctan2tds
index 5ba1d88e950..2759c206985 100755
--- a/Master/tlpkg/libexec/ctan2tds
+++ b/Master/tlpkg/libexec/ctan2tds
@@ -259,6 +259,7 @@ chomp (my $ctan_root = `tlpkginfo --ctan-root`);
  'cbfonts',     "&MAKEflatten",
  'cc-pl',       "&MAKEflatten",
  'cchess',      "die 'skipping, noinfo license, old'",
+ 'cdcmd',       "&MAKEflatten",
  'cdcover',     "die 'skipping, use cd-cover'",
  'cellular',    "die 'skipping, noinfo license, author deceased'",
  'cellwise',    "die 'skipping, noinfo license'",
diff --git a/Master/tlpkg/tlpsrc/cdcmd.tlpsrc b/Master/tlpkg/tlpsrc/cdcmd.tlpsrc
new file mode 100644
index 00000000000..e69de29bb2d
--- /dev/null
+++ b/Master/tlpkg/tlpsrc/cdcmd.tlpsrc
diff --git a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
index 4b2c984c6d6..b72bbe641e2 100644
--- a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
+++ b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
@@ -157,6 +157,7 @@ depend ccaption
 depend cclicenses
 depend cd
 depend cd-cover
+depend cdcmd
 depend cdpbundl
 depend cellprops
 depend cellspace