I do not know how far this topic belongs to the field of TeX's languages and their derivatives, but I leave my question below.
\
I want to know why Zathura does not find words that are rotated or tilted, and whether there is any solution to that.
I do not know how far this topic belongs to the field of TeX's languages and their derivatives, but I leave my question below.
\
I want to know why Zathura does not find words that are rotated or tilted, and whether there is any solution to that.
Following the recommendations of @Marijn, I present the solution in a MWE:
\documentclass{article}
\usepackage{tikz}
\usepackage{accsupp}
\usetikzlibrary{mindmap}
\begin{document}
\begin{tikzpicture}
\node (energy1) at (30:10cm){Text};
\node (energy2) at (90:10cm) {Text};
\draw [circle connection bar]
(energy1) edge (energy2)
;
\draw (energy1)--node[orange, sloped,above=0.5cm,align=center,text width=8cm]{\textsc{%
\BeginAccSupp{method=escape,ActualText=USA}%
usa%
\EndAccSupp{}}%
}(energy2);
\end{tikzpicture}
\end{document}
accsupppackage, see for example https://tex.stackexchange.com/questions/18483/is-it-possible-to-provide-alternative-text-to-use-when-copying-text-from-the-pdf. – Marijn Mar 25 '19 at 15:49