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-rw-r--r--lisp/gud.el2
1 files changed, 2 insertions, 0 deletions
diff --git a/lisp/gud.el b/lisp/gud.el
index 8227b8be97e..2bc3affb1fa 100644
--- a/lisp/gud.el
+++ b/lisp/gud.el
@@ -1069,6 +1069,8 @@ and source-file directory for your debugger."
(defvar gud-delete-prompt-marker nil)
+(put 'gud-mode 'mode-class 'special)
+
(defun gud-mode ()
"Major mode for interacting with an inferior debugger process.