I want to check revision history of a particular piece of code using svn repository. It will be ok if I could just check who made the last update, i.e. who is responsible for a the current state of a piece of code. I can go through the revision histories for the entire file, but if I could do the same for just a portion of the file ( a block or method may be), that would be helpful. Is it possible using svn? or any other similar tool?