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-rw-r--r--lisp/vc/diff.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/vc/diff.el b/lisp/vc/diff.el
index 062248c8f14..2a973cfdfb1 100644
--- a/lisp/vc/diff.el
+++ b/lisp/vc/diff.el
@@ -38,7 +38,7 @@
:group 'tools)
;;;###autoload
-(defcustom diff-switches (purecopy "-c")
+(defcustom diff-switches (purecopy "-u")
"A string or list of strings specifying switches to be passed to diff."
:type '(choice string (repeat string))
:group 'diff)