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Tom Pesman on #272 Markdown with Redcarpet 2011-06-28 00:19:12

Last night I've done some testing on an Ubuntu installation with the same results. I've modified the Nokogiri part so it will (hopefully) work on both installations. I've used the DocumentFragment class of Nokogiri.

          ruby
        
def syntax_highlighter(html)
  doc = Nokogiri::HTML::DocumentFragment.parse(html)
  doc.css("pre[@lang]").each do |pre|
    pre.replace Albino.colorize(pre.text.rstrip, pre[:lang])
  end
  doc.to_s
end 

Tom Pesman on #272 Markdown with Redcarpet 2011-06-27 11:36:11

If I use rails c with Nokogiri::HTML("<p>content</p>").to_s

it will output: "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" \"http://www.w3.org/TR/REC-html40/loose.dtd\">\n<html><body><p>content</p></body></html>\n"

I'm using Nokogiri version 1.4.6, maybe it's something with the libraries Nokogiri uses?

When I give the /Library/Ruby/Gems/1.8/bin/nokogiri -v command I get:

warnings: []
ruby:
engine: mri
version: 1.8.7
description: ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0]
platform: universal-darwin10.0
libxml:
loaded: 2.7.3
binding: extension
compiled: 2.7.3
nokogiri: 1.4.6

Tom Pesman on #272 Markdown with Redcarpet 2011-06-27 08:00:08

Hello Ryan,

Thanks for the screencast! When I use your example or the source code Nokogiri inserts HTML headers to the output of the syntax_highlighter method. I've fixed it by modifying the last line of that method.

          ruby
        
def syntax_highlighter(html)
  doc = Nokogiri::HTML(html)
  doc.search("//pre[@lang]").each do |pre|
    pre.replace Albino.colorize(pre.text.rstrip, pre[:lang])
  end
  doc.at_css("body").inner_html.to_s
end

Why is it that the output in the screencast is different?

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