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-rw-r--r--lisp/diff-mode.el3
1 files changed, 3 insertions, 0 deletions
diff --git a/lisp/diff-mode.el b/lisp/diff-mode.el
index 7eddf3b37e7..eb0807cc095 100644
--- a/lisp/diff-mode.el
+++ b/lisp/diff-mode.el
@@ -1230,6 +1230,9 @@ See `after-change-functions' for the meaning of BEG, END and LEN."
(diff-hunk-next arg)
(diff-goto-source))
+(defvar whitespace-style)
+(defvar whitespace-trailing-regexp)
+
;;;###autoload
(define-derived-mode diff-mode fundamental-mode "Diff"
"Major mode for viewing/editing context diffs.