0_error.md

:paragraph not behaving as expected

This user input:

Hello,

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

should (as with simple_format) become:

<p>Hello,</p>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
<p>Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>

but instead becomes:

<p>Hello, Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>

application_helper.rb

module ApplicationHelper
  require 'kramdown'
  require 'rinku'

  include Twitter::Autolink

  def sanitize_user_textarea(text)

    # Format the text w/ custom Kramdown setup and autolink w/ Rinku and Twitter Text

    # Corresponds to `makeLinksTargetBlank` in `all.js`

    raw(Rinku.auto_link(auto_link(Kramdown::Document.new(text, {:input => 'CustomKramdown'}).to_html)))
  end
end

custom_kramdown.rb

# config/initializers/custom_kramdown.rb

require 'kramdown/parser/kramdown'

module Kramdown
  module Parser
    class CustomKramdown < Kramdown::Parser::Kramdown

      # Delete selected Kramdown parsers

      # https://github.com/gettalong/kramdown/blob/master/lib/kramdown/parser/kramdown.rb#L75

      def initialize(source, options)
        super

        # Not deleted: `:paragraph`

        [
          :blank_line,
          :codeblock,
          :codeblock_fenced,
          :blockquote,
          :atx_header,
          :horizontal_rule,
          :list,
          :definition_list,
          :block_html,
          :setext_header,
          :table,
          :footnote_definition,
          :link_definition,
          :abbrev_definition,
          :block_extensions,
          :block_math,
          :eob_marker
        ].each do |parser|
          @block_parsers.delete(parser)
        end

        # Not deleted: `:link`
        
        [
          :emphasis,
          :codespan,
          :autolink,
          :span_html,
          :footnote_marker,
          :smart_quotes,
          :inline_math,
          :span_extensions,
          :html_entity,
          :typographic_syms,
          :line_break,
          :escaped_chars
        ].each do |parser|
          @span_parsers.delete(parser)
        end
      end
    end
  end
end