regenerating hunks with 'diff-ignore-whitespace-hunk'. Defaults to
the previously hard-coded "-b".
+** Ediff
+
+---
+*** New user option 'ediff-floating-control-frame'.
+If non-nil, try making the control frame be floating rather than tiled.
+
+Many X tiling window managers make the Ediff control frame a tiled
+window equal in size to the main Emacs frame, which works poorly.
+This option is useful to set if you use such a window manager.
+
** Buffer Selection
---