redcarpet-header-bug.rb

# reproducable code for https://github.com/vmg/redcarpet/issues/474
# (redcarpet-3.3.3, Windows 10 x64)

require 'redcarpet'

class TestRenderer < Redcarpet::Render::HTML
  def emphasis(text)
    "a" * 117
  end
end

markdown = Redcarpet::Markdown.new(TestRenderer)
puts markdown.render("*a*\n# aaa")

# expected: <h1>a</h1>
# actual:   a</h1>