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-rw-r--r--lisp/vc/ediff-diff.el5
1 files changed, 4 insertions, 1 deletions
diff --git a/lisp/vc/ediff-diff.el b/lisp/vc/ediff-diff.el
index ca56a2851db..07b853817d1 100644
--- a/lisp/vc/ediff-diff.el
+++ b/lisp/vc/ediff-diff.el
@@ -85,7 +85,10 @@ options after the default ones.
This variable is not for customizing the look of the differences produced by
the command \\[ediff-show-diff-output]. Use the variable
-`ediff-custom-diff-options' for that."
+`ediff-custom-diff-options' for that.
+
+Setting this variable directly may not yield the expected
+results. It should be set via the Customize interface instead."
:set #'ediff-set-diff-options
:type 'string)