[Tex/LaTex] How to highlight own keywords in HTML lstlistings

highlightinghtmlkeywordslistings

I would like to highlight some words in a lstlisting. The language is HTML.
However, \emph seems not to be working with HTML.
Any suggestions how I could work around this problem?

Right now I have:

\lstdefinestyle{htmlCode} {
language=html,
basicstyle=\scriptsize\ttfamily,
keywordstyle=\bfseries\ttfamily,
commentstyle=\color{gray}\ttfamily,
emph={time},
emphstyle=\color{green}
}

\begin{lstlisting}[style=htmlCode,caption={Html code}] 
<b>Time: $time$</b>
\end{lstlisting}

Best Answer

You could use the escapechar=<char> option for listings in the following way:

\documentclass{article}
\usepackage[usenames,dvipsnames]{xcolor}
\usepackage{listings}
\begin{document}
 \lstdefinestyle{htmlCode} {
   language=html,
   basicstyle=\scriptsize\ttfamily,
   keywordstyle=\bfseries\ttfamily,
   commentstyle=\color{gray}\ttfamily,
   escapechar=| % Escape to LaTeX between |...|
}

 \begin{lstlisting}[style=htmlCode,caption={Html code}] 
<b>Time: $|\color{green}time|$</b>
\end{lstlisting}
\end{document}

Listings with escape character

The reason for this working may involve the fact that listings allows escaping to LaTeX when using the mathescape=true flag. This escapes around $...$, which is exactly around your time "keyword".

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