为什么在节点中设置字体大小时行跳过不同？

Question

我想更改节点中文本的字体大小。理想情况下，最终我会在节点中拥有多种字体大小。但是，当我尝试更改节点中的字体大小时，我得到了意想不到的不同行距。以下是代码：

\documentclass[tikz]{standalone}

\begin{document}
\begin{tikzpicture}
\node[anchor=north east,text width=0.2\textwidth,font=\small] at (0,0) {This text demonstrates how your own text will look when you replace the placeholder with your own text.};
\node[anchor=north west,text width=0.2\textwidth] at (0,0) {\small This text demonstrates how your own text will look when you replace the placeholder with your own text.};
\end{tikzpicture}
\end{document}

如您所见，在节点中设置字体大小会导致不同的行距。我该如何避免这种情况？那里发生了什么？

Answer 1

很可能，节点的文本被封闭在一个组中，并且\par触发换行的结尾在这个组之外，因此标准基线距离有效，而不是与 相关的基线距离\small。

您可以在下面看到相同的效果：

\documentclass{article}

\begin{document}

\begin{minipage}[t]{0.2\textwidth}
\raggedright
\small
This text demonstrates how your own text will 
look when you replace the placeholder with 
your own text.
\end{minipage}
\quad
\begin{minipage}[t]{0.2\textwidth}
\raggedright
{\small
This text demonstrates how your own text will 
look when you replace the placeholder with 
your own text.}
\end{minipage}

\end{document}

添加\par。

\documentclass{standalone}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}
\node[anchor=north east,text width=0.2\textwidth,font=\small] at (0,0) {This text demonstrates 
how your own text will look when you replace the placeholder with your own text.};
\node[anchor=north west,text width=0.2\textwidth] at (0,0) {\small This text demonstrates how 
your own text will look when you replace the placeholder with your own text.\par};
\end{tikzpicture}
\end{document}

Answer 2

@egreg 不是答案，而是观察。如果重叠这两个节点，您会发现单词之间的空间看起来有些不同，但这两个节点的尺寸似乎完全相同。

\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\node[anchor=north east,text width=0.2\textwidth,font=\small,draw] at (0,0) {This text demonstrates how your own text will look when you replace the placeholder with your own text.};
\node[anchor=north east,text width=0.2\textwidth,red,opacity=0.5,draw] at (0,0) {\small This text demonstrates how your own text will look when you replace the placeholder with your own text.\par};
\end{tikzpicture}
\end{document}