While using the TikZ quotes library to put labels on lines, the double option of \draw does not seem to work.
Example:
\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{positioning, quotes}
\begin{document}
\begin{tikzpicture}
\node (A) at (1,2) {A};
\node (B) at (3,4) {B};
\draw [double] (A) edge["Label"] (B);
\end{tikzpicture}
\end{document}
How do I make the double line appear?


quoteslibrary either. If you want to use it on more than one edge on one path use\path[every edge/.append style=double] (A) edge["Label"] (B) (B) edge["Another Label"] (A);. Edges are special. – Qrrbrbirlbel Nov 07 '22 at 13:54