diffcore: add a pickaxe option to find a specific blob

diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index dd0dba5b1d1951e762f0a43f1b2476bfa1029ad9..f9cf85db05058983e8bddf5e8766a1e81c50a6d9 100644 (file)
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -492,6 +492,15 @@ occurrences of that string did not change).
 See the 'pickaxe' entry in linkgit:gitdiffcore[7] for more
 information.
 
+--find-object=<object-id>::
+       Look for differences that change the number of occurrences of
+       the specified object. Similar to `-S`, just the argument is different
+       in that it doesn't search for a specific string but for a specific
+       object id.
++
+The object can be a blob or a submodule commit. It implies the `-t` option in
+`git-log` to also find trees.
+
 --pickaxe-all::
        When `-S` or `-G` finds a change, show all the changes in that
        changeset, not just the files that contain the change
@@ -500,6 +509,7 @@ information.
 --pickaxe-regex::
        Treat the <string> given to `-S` as an extended POSIX regular
        expression to match.
+
 endif::git-format-patch[]
 
 -O<orderfile>::