# Expand list items as paragraphs if needed.
	private fun expand_paragraphs(block: MDBlock) do
		var outer = block.first_block
		var inner: nullable MDBlock
		var has_paragraph = false
		while outer != null and not has_paragraph do
			if outer.kind isa BlockListItem then
				inner = outer.first_block
				while inner != null and not has_paragraph do
					if inner.kind isa BlockParagraph then
						has_paragraph = true
					end
					inner = inner.next
				end
			end
			outer = outer.next
		end
		if has_paragraph then
			outer = block.first_block
			while outer != null do
				if outer.kind isa BlockListItem then
					inner = outer.first_block
					while inner != null do
						if inner.kind isa BlockNone then
							inner.kind = new BlockParagraph(inner)
						end
						inner = inner.next
					end
				end
				outer = outer.next
			end
		end
	end