Taking the message about "Syntax highlighting for C-code", I tried to use
t-vim module.

In that message:

Richard Weickelt wrote:

> 2) t-vim did not work. It failed somewhere (unknown command sequence
> \installspacehandler) on loading (\usemodule[vim])


I can confirm this on latest Beta, downloaded today, ver: 2012.01.12 11:03
MKIV  fmt: 2012.1.14  int: english/english. I attached the log file.

On my current version (2011.05.18 18:04), I can compile the file, but the
code cannot be viewed on generated PDF.

The content of file I'm trying to compile is below.

% teste.tex
\usemodule[vim]

\definevimtyping[C][syntax=C]
\definevimtyping[ruby][syntax=ruby]

\starttext

\startitemize
  \item A hello world example in C
    \startC
      #include<stdio.h>

      int main()
      {
        printf("Hello World")
      }
    \stopC
  \item A hello world example in ruby
    \startruby
      puts "Hello World"
    \stopruby
\stopitemize

\stoptext

--
Wagner Macedo