Usage:   cmark-gfm [FILE*]
Options:
  --to, -t FORMAT   Specify output format (html, xml, man, commonmark, plaintext, latex)
  --width WIDTH     Specify wrap width (default 0 = nowrap)
  --sourcepos       Include source position attribute
  --hardbreaks      Treat newlines as hard line breaks
  --nobreaks        Render soft line breaks as spaces
  --unsafe          Render raw HTML and dangerous URLs
  --smart           Use smart punctuation
  --validate-utf8   Replace UTF-8 invalid sequences with U+FFFD
  --github-pre-lang Use GitHub-style <pre lang> for code blocks
  --extension, -e EXTENSION_NAME  Specify an extension name to use
  --list-extensions               List available extensions and quit
  --strikethrough-double-tilde    Only parse strikethrough (if enabled)
                                  with two tildes
  --table-prefer-style-attributes Use style attributes to align table cells
                                  instead of align attributes.
  --full-info-string              Include remainder of code block info
                                  string in a separate attribute.
  --help, -h       Print usage information
  --version        Print version