Vim Development

Most active development happens on the vim-dev maillist. Subscribe if you want to get involved, see here.

To see the known bugs and next things to work on, use the Vim help:

  :help todo

There is also an issue tracker here.

Making changes to Vim

Since Vims source code is hosted at github.com and managed by git it is most easiest to use git for developing and bugfixing Vim.
See The GitHub page.

If you prefer to use Mercurial over git, there is an alternative: the Mercurial mirror