Jekyll plugin for syntax highlighting via stratus-color

stratus_color.rb

require 'shellwords'

module Jekyll
  class StratusColorBlock < Liquid::Block
    def initialize(tag_name, markup, tokens)
      super
      @lang = markup
    end

    def render(context)
      code = super
      code.gsub! /\n[ ]{4}/, "\n"
      code.strip!
      code = Shellwords.escape code
      `echo #{code} | stratus-color -l #{@lang} -N`.gsub! "<li></li></ul>", "</ul>"
    end
  end
end

Liquid::Template.register_tag('color', Jekyll::StratusColorBlock)

syntax.css

.stratus-color {
  font-family: monospace;
  font-size: 13px;
  overflow: auto;
  white-space: pre;
  word-wrap: normal;
}
.stratus-color > ul {
  float: left;
  list-style: none;
}
.stratus-color > ul li {
  height: 15px;
  padding-left: 2px;
}
.stratus-color > .stratus-color-gutter {
  float: left;
  padding: 0px 3px 0px 6px;
  text-align: right;
  -webkit-user-select: none;
}
.stratus-color > .stratus-color-gutter > span {
  display: block;
}
.stratus-color::-webkit-scrollbar {
  height: 10px;
  width: 10px;
}
.stratus-color::-webkit-scrollbar-track {
  background: #eee;
  box-shadow: inset 1px 1px 2px rgba(0,0,0,0.20);
}
.stratus-color::-webkit-scrollbar-thumb {
  background: #888;
  box-shadow: inset 1px 0px 2px rgba(0,0,0,0.20);
}
.stratus-color::-webkit-scrollbar-thumb:hover {
  background: #666;
  box-shadow: inset 1px 1px 3px rgba(0,0,0,0.20);
}

.stratus-color {
  background: #323232;color: white; }

.stratus-color *::selection {
  background: rgba(90, 100, 126, 0.35); }
.stratus-color li::selection {
  background: rgba(90, 100, 126, 0.35); }

.stratus-color-gutter {
  background: #f4f4f4;color: #888; }
.stratus-color-gutter > span.current-middle {
  background: #fff;border-color: #ccc; }
.stratus-color-gutter > span.current-top {
  border-width: 1px 0px 0px;
  border-style: solid;
  margin:       -1px 0px 0px;
  background: #fff;border-color: #ccc; }
.stratus-color-gutter > span.current-bottom {
  border-width: 0px 0px 1px;
  border-style: solid;
  margin:       0px 0px -1px;
  background: #fff;border-color: #ccc; }
.stratus-color-gutter > span.current {
  border-width: 1px 0px;
  border-style: solid;
  margin:       -1px 0px;
  background: #fff;border-color: #ccc; }