(See Update at the end, to get proper colors)
By default pandoc uses its own highlighting engine, but it can be changed to use package listings instead. Simply add --listings option to your pandoc command line.
However, the format used by listings does not break long lines either, but you can prepare all the required options in a separate tex file, for example:
% Contents of listings-setup.tex
\usepackage{xcolor}
\lstset{
basicstyle=\ttfamily,
numbers=left,
numberstyle=\footnotesize,
stepnumber=2,
numbersep=5pt,
backgroundcolor=\color{black!10},
showspaces=false,
showstringspaces=false,
showtabs=false,
tabsize=2,
captionpos=b,
breaklines=true,
breakatwhitespace=true,
breakautoindent=true,
linewidth=\textwidth
}
And then compile with the line:
pandoc test.md --listings -H listings-setup.tex -o output.pdf
Unfortunately, this solution cannot use the --highlight-style option too. If you want to get the tango colorscheme, you have to code it yourself as options for the listing packages, and include them in the \lstset above.
Given the file test.md as follows:
% Title
% Author
# First section
Some code with long lines:
```java
public class Test {
static Set<Thread> updateThreads = new HashSet<Thread>();
public static void main(String[] args) {
ConcurrentMap<Integer, String> concurrentMap = new ConcurrentHashMap<Integer, String>();
for (int i = 0; i < 1000; i++) {
startUpdateThread(i, concurrentMap);
}
for (Map.Entry<Integer, String> entry : concurrentMap.entrySet()) {
System.out.println("Key :" + entry.getKey() + " Value:" + entry.getValue());
}
for (Thread thread : updateThreads) {
thread.interrupt();
}
}
}
```
That's it.
The result generated by the previous pandoc command line is:
Update
In order to mimic closely the result obtained with --highlight-style tango option (and no listings package), I ran pandoc asking for the intermediate .tex file to discover how the colors were defined for that case.
I wrote the following setup using listings options, which use the same colors (only where applicable, for example listings has no mean to set a specific color for numeric constants or other syntactic elements). In addition I reduced the spacing among chars, which were too far apart with default setup. This is the new setup:
% Contents of listings-setup.tex
\usepackage{xcolor}
\lstset{
basicstyle=\ttfamily,
numbers=left,
keywordstyle=\color[rgb]{0.13,0.29,0.53}\bfseries,
stringstyle=\color[rgb]{0.31,0.60,0.02},
commentstyle=\color[rgb]{0.56,0.35,0.01}\itshape,
numberstyle=\footnotesize,
stepnumber=1,
numbersep=5pt,
backgroundcolor=\color[RGB]{248,248,248},
showspaces=false,
showstringspaces=false,
showtabs=false,
tabsize=2,
captionpos=b,
breaklines=true,
breakatwhitespace=true,
breakautoindent=true,
escapeinside={\%*}{*)},
linewidth=\textwidth,
basewidth=0.5em,
}
Using those settings, i.e. running pandoc with options:
pandoc test.md --listings -H listings-setup.tex -o output.pdf
the following result is obtained:
For reference, compare it with the result without --listings but with --highlight-syntax tango instead:
As you can see, the style is very close (except for numeric constants, which are blue using tango, but black using listings). Note also how the lines were wrapped with listings. I also added line numbers which refer to the original lines (before wrapping).
Best Answer
When using the default Haskell skylighting library for code highlighting, pandoc typesets code listings in an environment called "
Shaded" which it defines as thesnugshadeenvironment from the framed package.That environment is defined so that the start of the text is in its usual spot, but there is padding for the shaded area so that it extends outside the usual typeset area.
However, that package also provides a starred version that keeps the padding for the shaded area in the inside of the usual typeset area rather than the outside, so the actual text inside is slightly indented on both sides.
So one thing you could do is redefine pandoc's
Shadedenvironment to use that instead:You could put that either in your markdown document, in a yaml
header-includes:option, or probably most appropriately, at the end of the./LaTeX/headers.texfile you're including in the preamble with pandoc's-Hoption.Since I don't have your
my.themehighlight style, and the kate theme it's based on uses a white background, I couldn't test with that, but here's the result using thebreezedarktheme: