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-rw-r--r--lisp/progmodes/gdb-ui.el4
1 files changed, 3 insertions, 1 deletions
diff --git a/lisp/progmodes/gdb-ui.el b/lisp/progmodes/gdb-ui.el
index 431055e9b43..657e8531278 100644
--- a/lisp/progmodes/gdb-ui.el
+++ b/lisp/progmodes/gdb-ui.el
@@ -1256,7 +1256,9 @@ This filter may simply queue input for a later time."
;;
(defcustom gud-gdb-command-name "gdb --annotate=3"
- "Default command to execute an executable under the GDB debugger."
+ "Default command to execute an executable under the GDB debugger.
+The option \"--annotate=3\" must be included in this value if you
+want the GDB Graphical Interface."
:type 'string
:group 'gud
:version "22.1")