How can I add additional spacing between some lines in `minted`?

Question

I would like to add a little separation between some lines of code for readibility. Consider this MWE:

\documentclass{article}
\usepackage{minted}
\begin{document}
\begin{minted}[linenos]{python}
foo(1)
bar(1)
foofoo(1)
foobar(1)
\end{minted}
\end{document}

The produced output of course looks like

1 foo(1)
2 bar(1)
3 foobar(1)
4 foobaz(1)

What I would want to see is

1 foo(1)
2 bar(1)
3 foobar(1)
4 foobaz(1)

(With not necessarily an entire line’s spacing between lines 2 and 3, but some extra space.)

---

I first tried to use the minted options [escapeinside=] and \\[2ex], but it did nothing. I mean the \\ was recognized as a TeX command, since it did not show in the output, but no 2ex spacing was added.

I then stumbled upon David’s (brilliantly engineered ☺) answer here, but that solution still increments the line counter on the next line.

\renewcommand\theFancyVerbLine{%
    \ifnum\value{FancyVerbLine}=3
        \setcounter{FancyVerbLine}3
    \else
        {\scriptsize\arabic{FancyVerbLine}}
    \fi
}

I cannot do \setcounter{FancyVerbLine}2 as that would cause an infinite loop, setting each line number to 2 starting from the 3rd line and not printing anything.

Answer 1

You might use an invisible rule with the appropriate depth.

\documentclass{article}
\usepackage{minted}
\newcommand\spacer[1]{\rule[-#1]{0pt}{#1}}
\begin{document}
\begin{minted}[linenos,escapeinside=||]{python}
foo(1)
bar(1)|\spacer{3ex}|
foofoo(1)
foobar(1)
\end{minted}
\end{document}