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-rw-r--r--sx-question-mode.el1
1 files changed, 1 insertions, 0 deletions
diff --git a/sx-question-mode.el b/sx-question-mode.el
index 9276381..4263f6e 100644
--- a/sx-question-mode.el
+++ b/sx-question-mode.el
@@ -243,6 +243,7 @@ on the current buffer use
\\{sx-question-mode}"
(setq header-line-format sx-question-mode--header-line)
(setq mode-line-format sx-question-mode--mode-line)
+ (buffer-disable-undo (current-buffer))
(set (make-local-variable 'nobreak-char-display) nil)
;; Determine how to close this window.
(unless (window-parameter nil 'quit-restore)