asterisk="*" attr_generic=" a=\"1\"" attr_href=" href=\"1\"" attr_xml_lang=" xml:lang=\"1\"" attr_xmlns=" xmlns=\"1\"" backslash="\\" backtick="`" colon=":" dashes="---" double_quote="\"" entity_builtin="<" entity_decimal="" entity_external="&a;" entity_hex="" equals="===" exclamation="!" greater_than=">" hash="#" hyphen="-" indent=" " left_bracket="[" left_paren="(" less_than="<" plus="+" right_bracket="]" right_paren=")" single_quote="'" string_any="ANY" string_brackets="[]" string_cdata="CDATA" string_dashes="--" string_empty_dblquotes="\"\"" string_empty_quotes="''" string_idrefs="IDREFS" string_parentheses="()" string_pcdata="#PCDATA" tag_cdata="<![CDATA[" tag_close="</a>" tag_doctype="<!DOCTYPE" tag_element="<!ELEMENT" tag_entity="<!ENTITY" tag_notation="<!NOTATION" tag_open="<a>" tag_open_close="<a />" tag_open_exclamation="<!" tag_open_q="<?" tag_sq2_close="]]>" tag_xml_q="<?xml?>" underscore="_" # GFM specific strikethrough="~~~strike~~~" user_mention="@octocat" email_mention="octocat@github.com" http="http://" https="https://" ftp="ftp://" title_tag="title" textarea_tag="textarea" style_tag="style" xmp_tag="xmp" iframe_tag="iframe" noembed_tag="noembed" noframes_tag="noframes" script_tag="script" plaintext_tag="plaintext"