Listings: text highlighting based on prefix

Question

How can I apply different styles to keywords depending on their prefix?

Here is some sample code:

(-2,0,0) (2,1,1) op-registerbox !box1
;box1 /Blue op-setproperties

I'd like to typeset

1. words starting with ! and ; in color red,
2. words starting with / in color green,
3. words starting with cp- in bold.

So far, this is what I've got:

\lstdefinelanguage{XX}
{
basicstyle=\small\sffamily\fontseries{c},
emphstyle=\underbar,
keywordsprefix=[2]{/},
alsoletter={/},
keywordstyle=\textbf,
keywordstyle=[2]\color{green},
morekeywords={op,registerbox, ...},
morestring=[b][\color{green}]",
columns=flexible,
escapechar=\%,
numbersep=6pt,
numberstyle=\scriptsize
}

I'm aware that only one keywordsprefix can be defined at the moment: specifying more than one class of prefix (keywordsprefix=[2]{/}) is currently not supported. I'd like to avoid having to list all the words that match my description into morekeywords. Is that possible? How?

Answer 1

Here is one way of doing it using moredelim. I assumed you meant words starting with op-, not words starting with cp-. I didn't use keywordsprefix because it currently only allows for one prefix "class", and the listings documentation (v1.5b) still considers it a buggy feature; see subsection 4.18 about that.

Remember to load lmodern if you want some stuff to be typeset in bold typewriter font.

\documentclass{article}

\usepackage[dvipsnames]{xcolor}
\usepackage{lmodern}
\usepackage{listings}

\lstdefinelanguage{XX}
{
basicstyle=\small\sffamily\fontseries{c},
morestring=[b][\color{green}]",
%
moredelim=[s][\color{red}]{!}{\ },
moredelim=[s][\color{red}]{;}{\ },
moredelim=[s][\color{ForestGreen}]{/}{\ },
moredelim=[s][\bfseries]{op-}{\ },
%
columns=flexible,
escapechar=\%,
numbersep=6pt,
numberstyle=\scriptsize
}

\begin{document}

\begin{lstlisting}[language=XX]
(-2,0,0) (2,1,1) op-registerbox !box1
;box1 /Blue op-setproperties
\end{lstlisting}

\end{document}