bug#65007: [PATCH] Allow displaying program IO in the GDB buffer.

[StrawberryTea <look@strawberrytea.xyz>]

* gdb-mi.el: Add new customizable variable `gdb-split-io-flag'.

This change allows the user to control whether program IO is displayed
in the GDB buffer or in a separate buffer.  The default is to display it
in the the `gdb-inferior-io' buffer.
---
 lisp/progmodes/gdb-mi.el | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/lisp/progmodes/gdb-mi.el b/lisp/progmodes/gdb-mi.el
index a1091de43e9..8f4f06abb9a 100644
--- a/lisp/progmodes/gdb-mi.el
+++ b/lisp/progmodes/gdb-mi.el
@@ -1098,9 +1098,10 @@ detailed description of this mode.
                      (if gdb-debuginfod-enable "on" "off"))
              'gdb-debuginfod-message)
 
-  (gdb-get-buffer-create 'gdb-inferior-io)
-  (gdb-clear-inferior-io)
-  (gdb-inferior-io--init-proc (get-process "gdb-inferior"))
+  (when gdb-split-io-flag
+    (gdb-get-buffer-create 'gdb-inferior-io)
+    (gdb-clear-inferior-io)
+    (gdb-inferior-io--init-proc (get-process "gdb-inferior")))
 
   (when (eq system-type 'windows-nt)
     ;; Don't create a separate console window for the debuggee.
@@ -1828,6 +1829,15 @@ this trigger is subscribed to `gdb-buf-publisher' and called with
   :group 'gdb
   :version "25.1")
 
+(defcustom gdb-split-io-flag t
+  "Non-nil means to split the program's I/O from the GDB buffer.
+
+If t, create the `gdb-inferior-io' buffer and redirect the
+program's I/O to it."
+  :type 'boolean
+  :group 'gdb
+  :version "30.1")
+
 (defun gdb-inferior-filter (proc string)
   (unless (string-equal string "")
     (let (buf)
-- 
2.41.0