Better R support in pygments by monkey patching SLexer

May 20, 2012
By

(This article was first published on f3lix » R, and kindly contributed to R-bloggers)

I started using knitr with reStructuredText today and I found that the syntax highlighting with pygments (used by rst2html.py) was not as nice as the output of pandoc. So I ended up doing some monkeypatching.

Try adding the following to rst2html.py:

# SLexer is the lexer used for R
from pygments.lexers.math import SLexer
from pygments.token import Keyword, Name

# monkey patching SLexer ...

# add some builtin functions (TODO: add more)
SLexer.tokens['keywords'].append(
   (r'(?

Before:

After:

Note: I assume you already added pygments’ rst-directive.py to rst2html.py.

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