This plugin has been developed in order to make diff mode more useful. Vim highlights all the text in between the first and last different characters on a changed line. But this plugin will find the exact differences between them, character by character - so called DiffChar.
For example, in diff mode: ( [DiffText], <DiffAdd> )
(window A) The [quick brown fox jumps over the lazy] dog.
(window B) The [lazy fox jumps over the quick brown] dog.
this plugin will exactly show the changed and added units:
(window A) The [quick] <brown >fox jumps over the [lazy] dog.
(window B) The [lazy] fox jumps over the [quick] <brown >dog.