宏取 {032911} 并返回 03 29 11

Question

它在标题中——我正在寻找一个插入空格的宏。我想调用\mycmd{032911}来获取03 29 11。

Answer 1

\def\mycmd#1{\dostartmycmd#1\dostopmycmd}

\def\dostartmycmd#1#2#3#4#5#6\dostopmycmd
    {#1#2\space
     #3#4\space
     #5#6}