How to typeset ``…(e.g. Equation 6)` using cleveref?

Question

I use the cleveref package to produce equation references like Figure 3 and Equation (12). The parentheses for equation references are fine most of the time, but it seems silly when the reference is already enclosed by parentheses.

When I use ...(e.g. \Cref{eqn:ExampleEqn}), it typesets it as ...(e.g. Equation (6)). What I want is it to look like ...(e.g. Equation 6).

I know \citep{} has the ability to typeset citations differently: \citep[e.g.][]{Author2019} produces (at least, using the Elsevier author-year citation style) (e.g. Author, 2019). I'm hoping for something like this with cleveref.

Does cleveref have a "clever" way to reference things inside parentheses so that it doesn't add the extra set of parentheses? If so, how? If not, what is a good way to do that for this one time (similar SX questions have answers that generally are for the entire document)?

Answer 1

Make the parentheses to be inserted by macros which you can redefine at will.

\documentclass{article}
\usepackage{amsmath}
\usepackage{cleveref}

\crefformat{equation}{Equation~\textup{\OPEN#2#1#3\CLOSE}}
\newcommand{\OPEN}{(}
\newcommand{\CLOSE}{)}
\newcommand{\tcref}[1]{%
  \begingroup
  \renewcommand{\OPEN}{}%
  \renewcommand{\CLOSE}{}%
  \cref{#1}%
  \endgroup
}

\begin{document}

\begin{equation}
a=b \label{test}
\end{equation}

\cref{test}

\tcref{test}

\end{document}