1 files changed, 36 insertions, 0 deletions
diff --git a/tools/emacs/config/term-setup.el b/tools/emacs/config/term-setup.el
new file mode 100644
index 000000000000..cd4f9c25ef73
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+++ b/tools/emacs/config/term-setup.el
@@ -0,0 +1,36 @@
+;; Utilities for X11 terminal buffers.
+
+(defvar x11-terminal-program "gnome-terminal"
+  "Which X11 terminal application to use.")
+
+(defvar x11-terminal-buffer-prefix "Term"
+  "String prefix for X11 terminal buffer names.")
+
+(defun open-or-create-terminal-buffer (buffer-name)
+  "Switch to the buffer with BUFFER-NAME or create a new buffer
+  running the configured X11 terminal."
+  (let ((buffer (get-buffer buffer-name)))
+    (if (not buffer)
+        (run-external-command x11-terminal-program)
+      (switch-to-buffer buffer))))
+
+(defun is-terminal-buffer (buffer)
+  "Determine whether BUFFER runs an X11 terminal."
+  (and (equal 'exwm-mode (buffer-local-value 'major-mode buffer))
+       (s-starts-with? x11-terminal-buffer-prefix (buffer-name buffer))))
+
+(defun counsel-switch-to-terminal ()
+  "Switch to an X11 terminal buffer, or create a new one."
+  (interactive)
+  (let ((terms (-map #'buffer-name
+                     (-filter #'is-terminal-buffer (buffer-list)))))
+    (if terms
+        (ivy-read "Switch to terminal buffer: "
+                  (cons "New terminal" terms)
+                  :caller 'counsel-switch-to-terminal
+                  :preselect (s-concat "^" x11-terminal-buffer-prefix)
+                  :require-match t
+                  :action #'open-or-create-terminal-buffer)
+      (run-external-command x11-terminal-program))))
+
+(provide 'term-setup)