A quick hack to get Snort support in Pygments.
As it stands it's probably not very pretty output wise, nor code wise.
To test:
python hogments/hog.py filename.rules
To install:
sudo python setup.py install
If this fails because you previously installed this lexer and have pulled a new revision where I have not incremented the version number in setup.py, you can try appending the --force option to setup.py.
After that it should be possible to use it with pygmentize:
pygmentize -f 256 filename.rules
pygmentize -f 256 -l hog filename.rules
pygmentize -f 256 -l snort filename.rules
List of keywords and the test file has been lifted without shame from BobuSumisu's snort-mode repository.