DejaVu Sans Mono and upquote

Question

\documentclass[12pt]{article}

\usepackage[utf8]{inputenc}
\usepackage[T1,T2A]{fontenc}

\usepackage{listings}
\usepackage{dejavu}
\usepackage{upquote}

\lstset{
    basicstyle=\ttfamily\footnotesize
}

\begin{document}
\lstinline|4 `div` 2|
\end{document}

shows 4 div 2 without the backticks. No errors or warnings in the log. Adding textcomp and using upquote in lstset instead of the separate package didn't help.

Can anyone reproduce it (since search doesn't find anything and it would be weird if I was the first who needed this character)?

And is there a workaround?

Answer 1

If you look in the log file, you'll see

Missing character: There is no ` in font DejaVuSansMono-tlf-ts1!

The upquote package defines ` to produce \textasciigrave, which is taken from the TS1 encoded font. Unfortunately, this glyph is missing in DejaVu Mono in the TS1 encoding. We can borrow it from Vera Sans that has it (thanks to the OP for suggesting it over cmtt).

\documentclass[12pt]{article}

\usepackage[utf8]{inputenc}
\usepackage[T1,T2A]{fontenc}

\usepackage{listings}
\usepackage{dejavu}
\usepackage{upquote}
\usepackage{etoolbox}

\makeatletter
\chardef\straightquote@code=\catcode`'
\chardef\backquote@code=\catcode``
\catcode`'=\active \catcode``=\active
\patchcmd{\@noligs}
 {\textasciigrave}
 {\fixedtextasciigrave}
 {}{}
\newcommand{\fixedtextasciigrave}{%
  \makebox[.5em]{\fontencoding{TS1}\fontfamily{fvs}\selectfont\textasciigrave}% Vera Sans
}
\catcode\lq\'=\straightquote@code
\catcode\lq\`=\backquote@code
\makeatletter

\lstset{
  columns=fullflexible,
  keepspaces,
  basicstyle=\ttfamily\footnotesize,
  literate={`}{{{\fixedtextasciigrave}}}1,
}

\begin{document}

\lstinline|4 `div` 2|

\begin{lstlisting}
4 `div` 2
\end{lstlisting}

\end{document}