使宏遵循间距或缺少间距

Question

我制作了这个简单的宏：

\documentclass{ltxdoc}
\newcommand\Q{\textbf{Q}}

\begin{document}
I like to type my \Q's in bold quickly, but sometimes I also end my line with \Q. 
This doesn't have it's intended effect.
\end{document}

是否可以告诉宏检查前面的空格（或字符）并像我\textbf{Q}正常输入一样遵守它？我希望它表现正常，无论前面是点 (.) 还是空格 ( )。

Answer 1

尽管最近这已经成为一种禁忌，但这个xspace包确实做到了：

代码：

\documentclass{ltxdoc}
\usepackage{xspace}
\newcommand\Q{\textbf{Q}\xspace}

\begin{document}
I like to type my \Q's in bold quickly, but sometimes I also end my line with \Q. 
This doesn't have it's intended effect.

In a sentence \Q works now.
\end{document}