riffdiff (rubygems): == Riff Riff is a wrapper around diff that highlights not only which lines have changed, but also which parts of the lines that have changed.  = Usage  $ git diff | riff  Or if you do...  $ git config --global pager.diff riff  $ git config --global pager.show riff  ... then all future 'git diff's and 'git show's will be refined. 
Keywords: console-color|console-tool|diff|git-diff|highlighting|refiner|riff