xparse

단순 대체
%\newcommand\bsh{\textbackslash} \NewDocumentCommand\bsh{}{\textbackslash}

\bsh\texttt{newcommand} 대체하기.
인자 하나 있는 명령... m: mandatory argument
%\newcommand\hi[1]{Hello, #1} \NewDocumentCommand\hi{m}{Hello, #1}

\hi{Tom}.
인자 두개 있는 명령... mm
%\newcommand\hii[2]{Hello, #1 and #2} \NewDocumentCommand\hii{mm}{Hello, #1 and #2}

\hii{Tom}{Judy}. Long time no see.
\renewcommand -> \RenewDocumentCommand
%\newcommand\hii[2]{Hello, #1 and #2} \renewcommand\hii[2]{Hi, #1 and #2} \RenewDocumentCommand\hii{mm}{Hi, #1 and #2}

\hii{Tom}{Judy}. Long time no see.

o: 옵션, m: mandatory argument
%\usepackage{kotex,xcolor} %\newcommand\myword[2][]{\textcolor{#1}{#2}} \NewDocumentCommand\myword{om}{\textcolor{#1}{#2}}

\myword[black]{검정 글씨}, \myword[blue]{파랑 글씨}
O{<default>}: 디폴트값이 있는 옵션 지시자
%\usepackage{kotex,xcolor} %\newcommand\Myword[2][black]{\textcolor{#1}{#2}} \NewDocumentCommand\Myword{O{black}m}{\textcolor{#1}{#2}}

\Myword{검정 글씨}, \Myword[blue]{파랑 글씨}

o: optional argument
- "대체하기"의 예 참조
O: optional argument with default
- "대체하기"의 예 참조
d: delimited option
\NewDocumentCommand\tzdot{r()d()}{\tikz{\filldraw (#1) circle (#2);}}

\tzdot(0,0)(2pt)
D: delimited option with default
\NewDocumentCommand\tzDotx{O{overlay}r()D(){3pt}}{\tikz{\filldraw [#1] (#2) circle (#3);}}

\tzDotx(0,0)\tzDotx(1,0)(4pt)\tzDotx[overlay,red](2,0)\tzDotx[overlay,blue](3,0)(5pt)

output:
[PNG image (7.64 KB)]
g: option delimited by "{" and "}" (group tokens)
\NewDocumentCommand\tzdotg{r()g}{\tikz{\filldraw (#1) circle (#2);}}

\tzdotg(0,0){2pt}
G: {option} with default
\NewDocumentCommand\tzDotG{O{overlay}r()G{3pt}}{\tikz{\filldraw [#1] (#2) circle (#3);}}

\tzDotG(0,0)\tzDotG(1,0){4pt}\tzDotG[overlay,orange](2,0)\tzDotG[overlay,green](3,0){5pt}

output:
[PNG image (7.49 KB)]
s: starred version
\NewDocumentCommand\tzcirc{sr()}{ \IfBooleanTF#1 {{\tikz{\draw [fill,overlay,blue!80] (#2) circle (3pt);}} } {{\tikz{\draw [overlay,blue!80] (#2) circle (3pt);}} } }

\verb+\tzcirc*(0,0)+: \tzcirc*(0,0), \quad\verb+\tzcirc(0,0)+: \tzcirc(0,0)

output:
[PNG image (13.27 KB)]
t: more general token
\DeclareDocumentCommand\tzcirc{t=r()}{ \IfBooleanTF#1 {{\tikz{\draw [fill,overlay,blue!80] (#2) circle (3pt);}} } {{\tikz{\draw [overlay,blue!80] (#2) circle (3pt);}} } }

\verb|\tzcirc=(0,0)|: \tzcirc=(0,0), \quad\verb|\tzcirc(0,0)|: \tzcirc(0,0)

output:
[PNG image (12.93 KB)]

NewDocumentCommand\Foo...
- 같은 이름을 가진 명령이 있는지 검사하여, 없으면 새로운 명령 \Foo를 정의한다
- 있으면, 'already defined' 에러를 낸다.
RenewDocumentCommand\Foo...
- 같은 이름을 가진 명령이 있는지 검사하여, 있으면 기존 명령을 대체하여 새로 정의한다.
- 없으면, 'not yet defined' 에러를 낸다.
ProvideDocumentCommand\Foo...
- 같은 이름을 가진 명령이 있는지 검사하여, 없으면 새로운 명령을 정의한다.
- 있으면, 아무 일도 하지 않는다. 에러도 내지 않는다.
DeclareDocumentCommand\Foo...
- 같은 이름을 가진 명령이 있는지 검사하지 않고, 항상 명령을 새롭게 정의한다.

text color
\documentclass{article} \usepackage{kotex} \usepackage{xparse} \usepackage{xcolor} \usepackage{jiwonlipsum} \NewDocumentCommand\txtcol{lm}{\textcolor{#2}{#1}} \begin{document} \txtcol \jiwon[1]{blue!30} \txtcol \jiwon[2]{blue!50} \txtcol \jiwon[3-4]{blue!70} \end{document}
\frac{b}->1/b, \frac{a}{b}->a/b 출처
\documentclass{article} \usepackage{xparse} \let\RealFrac\frac \RenewDocumentCommand\frac{mg}{% \IfNoValueTF{#2} {\RealFrac{1}{#1}} {\RealFrac{#1}{#2}}% } \begin{document} One arg: \verb|$\frac{10}$| prints $\frac{10}$. Two args: \verb|$\frac{2}{30}$| prints $\frac{2}{30}$. \end{document}
옵션을 활괄호 안에 넣기 출처
\documentclass{article} \usepackage{xparse} \NewDocumentCommand\en{g}{% \IfNoValueTF{#1}{\epsilon}{\epsilon_{#1}}% } \begin{document} \verb|\en| prints $ \en $ and \verb|\en{stuff}| prints $ \en{stuff} $. \end{document}
ProcessList, SplitList, xparse
\documentclass{article} \usepackage{xparse} \NewDocumentCommand\mylist{>{\SplitList{;}}m} { \begin{itemize} \ProcessList {#1} { \insertitem} \end{itemize} } \newcommand\insertitem[1]{\item #1} \begin{document} Short list: \mylist{a;b} Longer list: \mylist{a;b;c;d} List within a list: \mylist{a;b\mylist{A;B;C;D};c;d} \end{document}

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