# File lib/asciidoctor/abstract_block.rb, line 339 def assign_caption(caption = nil, key = nil) return unless title? || !@caption if caption @caption = caption else if (value = @document.attributes['caption']) @caption = value elsif title? key ||= @context.to_s caption_key = "#{key}-caption" if (caption_title = @document.attributes[caption_key]) caption_num = @document.counter_increment("#{key}-number", self) @caption = "#{caption_title} #{caption_num}. " end end end nil end