local num_replies = #load_metadata(id).replies
	local corename = id:gsub('%.md$', '')
	return ('%s-%d.md'):format(corename, num_replies)
end
next_comment_id = function(id)

comment_path = function(id)
	return full_path('comments/'..id)
end

random_string = function(n)
	-- generate a random string of length n
	local result = {}
	local nchars = #Random_string_chars
	for i=1,n do
		local idx = math.random(1, nchars)
		table.insert(result, Random_string_chars:sub(idx, idx))
	end
	return table.concat(result)
end

Random_string_chars = 'abcdefghijklmnopqrstuvwxyz0123456789'

	local mpath = save_dir_path(mfile)

	local mpath
	if node.metadata.parent then
		mpath = save_dir_path('comments/'..mfile)
	else
		mpath = save_dir_path(mfile)
	end

end

end

new_comment_id = function(id)
	local corename = id:gsub('%.md$', '')
	-- there'll be a collision on avarage every #Random_string_chars^(n/2) = 1296 comments
	local n = 4
	local result = ('%s-%s.md'):format(corename, random_string(4))
	if file_exists(comment_path(result)) then
		-- retry
		-- This will infinite loop every #Random_string_chars^n = 1.6M, but it'll start taking a long time by halfway as long.
		return new_comment_id(id)
	end
	return result
end

	local id = next_comment_id(parent_id)

	local id = new_comment_id(parent_id)

		filename=full_path(id),

		filename=comment_path(id),

		metadata={replies={}},

		metadata={parent=parent_id, replies={}},

end

end

		if (not Files[i]:match('%.md$')) or Files[i]:match('%-%d+.md$') then

		if not Files[i]:match('%.md$') then

end

end

	local path
	if depth == 0 then
		path = full_path(id)
	else
		path = comment_path(id)
	end

		id=id, filename=full_path(id),

		id=id, filename=path,

		-- comments will always have metadata,
		-- so we only get here for top-level posts with no parent