change log file, navigate to the changes

[Uwe Brauer]

Hello

Does anybody know about a package which would allow to 
annote the changes but set a mark, such that later I could navigate to
that part of the buffer where the change occurred. Bm.el or bookmark.el
would be candidates, but they are not connected to change-log

Example

Original file

Hello world.
This is a great idea.

Changed to 

Hello world.
This is a good idea.

Change log entry would be 
2006-11-16  Uwe Brauer  <oub at mat.ucm.es>

	* test: Change great to good.

Setting the mouse say on test, and using a modified ffap-guesser
XEmacs would jump where the change occurred. In order to do this at
least the char-number should be stored, best would be a string before
and after the change in order to simplify the search. Bm.el and
bookmarks.el do this.

Thanks and regards

Uwe Brauer