range-diff: relieve callers of low-level configuration burden

diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index a1b1bafee708b11da7959646df4462f039a4ec22..f8a061794dcabc1b54a2e17dbfc178b5ce25caf9 100644 (file)
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -230,7 +230,8 @@ feeding the result to `git send-email`.
        fill in a description in the file before sending it out.
 
 --interdiff=<previous>::
-       As a reviewer aid, insert an interdiff into the cover letter showing
+       As a reviewer aid, insert an interdiff into the cover letter,
+       or as commentary of the lone patch of a 1-patch series, showing
        the differences between the previous version of the patch series and
        the series currently being formatted. `previous` is a single revision
        naming the tip of the previous series which shares a common base with