General developer forum

A question to all the CVS whizzards in Moodleland.

I fetch a certain version of Moodle and make extensive changes in its core functions. I now want to make those changes available to other Moodlers.

I gather the best way is to produce a patch file. What is then an exact CVS command that would produce such a file? I can keep an unchanged copy of the original release if that makes things simpler than comparing to annon CVS server.

I read man pages for cvs and patch but I am too dense I am afraid.