# hardbreas works, the `\n` in between is rendered
Commonmarker.to_html("aaaa\nbbbb")
# => "<p>aaaa<br />\nbbbb</p>\n"

# hardbreaks does not work!
Commonmarker.to_html("aaaa\nbbbb", options: { render: { unsafe: false }})
# => "<p>aaaa\nbbbb</p>\n"

# autolink works by default
Commonmarker.to_html("### h3")
# => "<h3><a href=\"#h3\" aria-hidden=\"true\" class=\"anchor\" id=\"h3\"></a>h3</h3>\n"

# autolink is gone!?
Commonmarker.to_html("### h3", options: { extension: { footnotes: false }})
# => "<h3>h3</h3>\n"

# all there
Commonmarker::Config.process_options({})
# => {:parse=>{:smart=>false, :default_info_string=>"", :relaxed_tasklist_matching=>false, :relaxed_autolinks=>false}, :render=>{:hardbreaks=>true, :github_pre_lang=>true, :full_info_string=>false, :width=>80, :unsafe=>false, :escape=>false, :sourcepos=>false, :escaped_char_spans=>true, :ignore_setext=>false, :ignore_empty_links=>false, :gfm_quirks=>false, :prefer_fenced=>false}, :extension=>{:strikethrough=>true, :tagfilter=>true, :table=>true, :autolink=>true, :tasklist=>true, :superscript=>false, :header_ids=>"", :footnotes=>false, :description_lists=>false, :front_matter_delimiter=>"", :multiline_block_quotes=>false, :math_dollars=>false, :math_code=>false, :shortcodes=>true, :wikilinks_title_before_pipe=>false, :wikilinks_title_after_pipe=>false, :underline=>false, :spoiler=>false, :greentext=>false}}

# those options enabled by default are all gone
Commonmarker::Config.process_options({parse: { smart: false }, render: { unsafe: false }, extension: { footnotes: false }})
# => {:parse=>{:smart=>false}, :render=>{:unsafe=>false}, :extension=>{:footnotes=>false}}