lua-gumbo rewrite HTML inline

[Gordon Madarm <gmadarm@...>]

When using lua-gumbo to parse HTML, how can I change elements inline. I saw a reference to the functionality here: http://lua-users.org/lists/lua-l/2014-01/msg00216.html

but https://gist.github.com/craigbarnes/8326199 is no longer available. I want to parse HTML and rewrite form actions and some a href links inline. Can someone point me to an example of how to implement this?

thanks!

- G