--- a/tests/test-help.t	Wed Apr 05 15:15:06 2017 -0700
+++ b/tests/test-help.t	Wed Apr 05 15:31:08 2017 -0700
@@ -545,6 +545,7 @@
    -c --change REV          change made by revision
    -a --text                treat all files as text
    -g --git                 use git extended diff format
+      --binary              generate binary diffs in git mode (default)
       --nodates             omit dates from diff headers
       --noprefix            omit a/ and b/ prefixes from filenames
    -p --show-function       show which function each change is in