use prism-tomorrow.css

docs/_style/prism-master/components/prism-r.js

@@ -0,0 +1,22 @@
+Prism.languages.r = {
+	'comment': /#.*/,
+	'string': {
+		pattern: /(['"])(?:\\.|(?!\1)[^\\\r\n])*\1/,
+		greedy: true
+	},
+	'percent-operator': {
+		// Includes user-defined operators
+		// and %%, %*%, %/%, %in%, %o%, %x%
+		pattern: /%[^%\s]*%/,
+		alias: 'operator'
+	},
+	'boolean': /\b(?:TRUE|FALSE)\b/,
+	'ellipsis': /\.\.(?:\.|\d+)/,
+	'number': [
+		/\b(?:NaN|Inf)\b/,
+		/(?:\b0x[\dA-Fa-f]+(?:\.\d*)?|\b\d+\.?\d*|\B\.\d+)(?:[EePp][+-]?\d+)?[iL]?/
+	],
+	'keyword': /\b(?:if|else|repeat|while|function|for|in|next|break|NULL|NA|NA_integer_|NA_real_|NA_complex_|NA_character_)\b/,
+	'operator': /->?>?|<(?:=|<?-)?|[>=!]=?|::?|&&?|\|\|?|[+*\/^$@~]/,
+	'punctuation': /[(){}\[\],;]/
+};