latex 定义带有方括号的command

阅读量: searchstar 2019-09-19 16:42:11
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来源:https://en.wikibooks.org/wiki/LaTeX/Macros

方括号中的参数其实就是默认参数。
使用方法:

\newcommand{name}[num][default]{definition}

例子:

\newcommand{\wbalTwo}[2][Wikimedia]{
This is the Wikibook about LaTeX
supported by {#1} and {#2}!}
% in the document body:
\begin{itemize}
\item \wbalTwo{John Doe}
\item \wbalTwo[lots of users]{John Doe}
\end{itemize}

输出:

This is the Wikibook about LaTeX supported by Wikimedia and John Doe!
This is the Wikibook about LaTeX supported by lots of users and John Doe!