content.to_plain_text # => ""
content = ActionText::Content.new("<script>alert()</script>")

browsers.
NOTE: that the returned string is not HTML safe and should not be rendered in

content.to_plain_text # => "safeunsafe"
content = ActionText::Content.new("")

content.to_plain_text # => "Funny times!"
content = ActionText::Content.new("

Funny times!

")

removed but HTML entities encoded.
Returns a plain-text version of the markup contained by the content, with tags

def to_plain_text
  render_attachments(with_full_attributes: false, &:to_plain_text).fragment.to_plain_text
end