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-rw-r--r--lisp/ibuffer.el1
1 files changed, 1 insertions, 0 deletions
diff --git a/lisp/ibuffer.el b/lisp/ibuffer.el
index c91a70b3a1c..c0a6d16c6f8 100644
--- a/lisp/ibuffer.el
+++ b/lisp/ibuffer.el
@@ -219,6 +219,7 @@ view of the buffers."
(const :tag "File name" :value filename/process)
(const :tag "Major mode" :value major-mode)))
(defvar ibuffer-sorting-mode nil)
+(defvar ibuffer-last-sorting-mode nil)
(defcustom ibuffer-default-sorting-reversep nil
"If non-nil, reverse the default sorting order."