I broke up with neovim....vim is my best friend now

dot_vim/plugged/vimtex/test/test-syntax/test-conceal.tex

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+\documentclass{minimal}
+\usepackage{amsmath}
+\usepackage{hyperref}
+
+\renewcommand{\emph}{\textbf}
+\renewcommand\emph{\textbf}
+
+\begin{document}
+
+$a_1$
+$a_+$
+$a_-$
+$a_=$
+$a_{i + 1}$
+$a_{i+1}$
+$a_{\beta k}$
+$a_{\hat k}$
+$a_{\delta}$
+$a_\delta$
+$a_\rho$
+
+$a^1$
+$a^+$
+$a^-$
+$a^=$
+$a^{i + 1}$
+$a^{i+1}$
+$a^{\hat k}$
+
+\begin{equation}
+  \bigl\lvert x \bigr\rvert
+  \operatorname{test}(a) = 1
+  \int f = \iiint g
+\end{equation}
+
+$\langle \| \\ \rangle$
+
+% Concealed and styled (bold; italic)
+\textup{asd $\alpha$}
+\textbf{test}
+\textit{test}
+\textsl{test}
+$4 \mathit{x} = \mathbf{test}$
+$\mathrm{Re} = \cdots$
+
+\begin{equation}
+  \mathbb{P}(x \,|\, y) \!= \dots
+  \label{eq:test-ref}
+\end{equation}
+
+Let's refer to \eqref{eq:test-ref}.
+
+Let's refer to Eq. \ref{eq:test-ref}.
+
+$\bar a$
+$\bar{a}$
+
+\begin{equation}
+  \text{test}
+  \textnormal{test $asd$}
+  \textrm{test}
+  \textup{test}
+  \texttt{test}
+  \textsf{test}
+  \textsc{test}
+\end{equation}
+
+\href{url}{text}
+
+\keyw{Piecewise \textbf{test} splines}
+
+\begin{equation}
+  \sum_{i=1}^n a_i = 0
+\end{equation}
+
+$$\lVert \mathrm{w} \rVert_2^2$$
+
+\chapter{test}
+
+\section{test}
+
+\subsection{testing}
+
+\subsubsection{testing}
+
+Test tilde: \tilde n
+
+Hello
+\thinspace
+\medspace
+\thickspace
+\bigskip
+\hspace{1em}
+\hfill
+\vspace{1em}
+\vfill
+Moon
+
+1 \, \: \; \! \quad \qquad 2
+
+$1 \, \: \; \! \quad \qquad 2$
+
+$Hello
+\thinspace
+\medspace
+\thickspace
+\bigskip
+\hspace{1em}
+\hfill
+\vspace{1em}
+Moon$
+
+\end{document}