xdiff: implement empty line chunk heuristic

diff --git a/Documentation/diff-config.txt b/Documentation/diff-config.txt
index 6eaa45271c9ff2d1200e4299c3040d52952a2ec4..9bf3e923cf564604a4d2b40bb1577992b436cd6b 100644 (file)
--- a/Documentation/diff-config.txt
+++ b/Documentation/diff-config.txt
@@ -166,6 +166,11 @@ diff.tool::
 
 include::mergetools-diff.txt[]
 
+diff.compactionHeuristic::
+       Set this option to enable an experimental heuristic that
+       shifts the hunk boundary in an attempt to make the resulting
+       patch easier to read.
+
 diff.algorithm::
        Choose a diff algorithm.  The variants are as follows:
 +