Make emoji--recent use multisession variables

* lisp/international/emoji.el (emoji--recent): Make into a
multisession variable.
(emoji-recent, emoji--recent-transient): Use it.
(emoji--add-recent): Update it.

1 files changed, 12 insertions, 8 deletions

diff --git a/lisp/international/emoji.el b/lisp/international/emoji.el
index 5f8c358caab..a4dec973fb8 100644
--- a/lisp/international/emoji.el
+++ b/lisp/international/emoji.el
@@ -30,6 +30,7 @@
 (require 'cl-lib)
 (require 'cl-extra)
 (require 'transient)
+(require 'multisession)
 
 (defgroup emoji nil
   "Inserting Emojis."
@@ -59,7 +60,7 @@
 (defvar emoji--derived nil)
 (defvar emoji--names (make-hash-table :test #'equal))
 (defvar emoji--done-derived nil)
-(defvar emoji--recent (list "😀" "😖"))
+(define-multisession-variable emoji--recent (list "😀" "😖"))
 (defvar emoji--insert-buffer)
 
 ;;;###autoload
@@ -83,7 +84,7 @@ of a visual interface."
   (unless (fboundp 'emoji--command-Emoji)
     (emoji--define-transient))
   (funcall (emoji--define-transient
-            (cons "Recent" emoji--recent) t)))
+            (cons "Recent" (multisession-value emoji--recent)) t)))
 
 ;;;###autoload
 (defun emoji-search ()
@@ -529,15 +530,18 @@ character) under point is."
   (lambda ()
     (interactive)
     (funcall (emoji--define-transient
-              (cons "Recent" emoji--recent) t end-function))))
+              (cons "Recent" (multisession-value emoji--recent))
+              t end-function))))
 
 (defun emoji--add-recent (glyph)
   "Add GLYPH to the set of recently used emojis."
-  (setq emoji--recent (delete glyph emoji--recent))
-  (push glyph emoji--recent)
-  ;; Shorten the list.
-  (when-let ((tail (nthcdr 30 emoji--recent)))
-    (setcdr tail nil)))
+  (let ((recent (multisession-value emoji--recent)))
+    (setq recent (delete glyph recent))
+    (push glyph recent)
+    ;; Shorten the list.
+    (when-let ((tail (nthcdr 30 recent)))
+      (setcdr tail nil))
+    (setf (multisession-value emoji--recent) recent)))
 
 (defun emoji--columnize (list columns)
   "Split LIST into COLUMN columns."