; Revert "Improve diff-mode navigation/manipulation"
This reverts commit
2c8a7e50d24daf19ea7d86f1cfeaa98a41c56085.
This change causes regressions:
https://lists.gnu.org/archive/html/emacs-devel/2016-11/msg00738.html
The following related commits are reverted as well:
61c6a10e3110490dadac4577cc540053341ff25c
a283d655db88cdcc8cb53d8e2578e1cdf751c84b
6b6abe0dba6a9a2e5f78aac3814421886e7a184f
e5ef59b87da5c2ddfa22f7342efe29b3eea6ed97
73349822cbd6e50526eda9c75453584d73dfca83
Fixes: debbugs:25105, 25400.