Wonderful things happen when smart people discard limitations that everyone else has been taking for granted, and two recent examples in the online world illustrate this beautifully.

Interacting with git from within emacs is a pleasure, thanks to the official git-mode and Christian Neukirchen's fantastic gitsum mode. Here are some convenient bindings for running git-svn from emacs.

If you use the amazing git-svn to work in a civilised manner with a subversion repository, you may have trouble if the subversion repository is relocated, ie. has its access URL change. This article describes an approach for handling this situation, which git-svn does not directly support.

In this article I discuss techniques for migrating source code repositories from darcs to git. I describe two approaches that failed for me, and introduce a new tool that I was able to use successfully with my own projects, and that can be used to create git mirrors of active darcs repositories.

Ruby On Rails has a Subversion repository with over 7500 commits at the time of writing. In this article I show how you can use Git to have a full local copy of the repository in 9MB, and use it to track upstream changes.

In a subsequent article I will show you how to use such a repository to easily maintain Rails patches for the six months it takes you to get them accepted into Core (wink).