How can I define APPEND for Rebol3 PORT?

Question

I'm working on scheme in Rebol3 and I'd like to add APPEND action. However, adding APPEND actor to the scheme does nothing, result of append my-scheme://localhost foobar is my-scheme://localhostfoobar instead of my action. The documentation is bit unfinished in this regard.

Answer 1

You need to use append on the port, and not the url!

port: open my-scheme://localhost
append port "my data"

The only port actors that can take a URL as an argument are those that have a port! specified as an argument. These are create, delete, open, close, read, write, open?, query, update, and rename. See http://www.rebol.net/wiki/Schemes:Notes#Port_Actions