Using Unicode characters for the tab-bar mode

ha-config.org

@@ -1118,6 +1118,48 @@ Any time I create or delete a new tab, we can call =ha-tab-bar-update-names=:
 
   (add-hook desktop-after-read-hook #'ha-tab-bar-update-names)
 #+END_SRC
+*** Add Numbers ot Tab Bar Mode
+Christian Tietze had a [[https://christiantietze.de/posts/2022/02/emacs-tab-bar-numbered-tabs/][great idea]] for making the tab-bar numbers more distinguished from the labels on the tabs (he has a [[https://christiantietze.de/posts/2022/12/sf-symbols-emacs-tab-numbers/][follow up essay]] about using a different font, Unicode is more portable and looks fine).
+
+First, create a variable that contains the Unicode values for the numbers. I am using the negative versions of the circle numbers from the Unicode dingbats collection:
+
+#+BEGIN_SRC emacs-lisp
+  (defvar ha/circle-numbers-alist
+    '((0 . "🄌")
+      (1 . "➊")
+      (2 . "➋")
+      (3 . "➌")
+      (4 . "➍")
+      (5 . "➎")
+      (6 . "➏")
+      (7 . "➐")
+      (8 . "➑")
+      (9 . "➒"))
+    "Alist of integers to strings of circled unicode numbers.")
+#+END_SRC
+
+And then use this function to replace the standard  =tab-bar-tab-name-format-function=:
+
+#+BEGIN_SRC emacs-lisp
+  (defun ha/tab-bar-tab-name-format-default (tab i)
+    (let ((current-p (eq (car tab) 'current-tab))
+          (tab-num (if (and tab-bar-tab-hints (< i 10))
+                       (alist-get i ha/circle-numbers-alist) "")))
+      (propertize
+       (concat tab-num
+               " "
+               (alist-get 'name tab)
+               (or (and tab-bar-close-button-show
+                        (not (eq tab-bar-close-button-show
+                                 (if current-p 'non-selected 'selected)))
+                        tab-bar-close-button)
+                   "")
+               " ")
+       'face (funcall tab-bar-tab-face-function tab))))
+
+  (setq tab-bar-tab-name-format-function
+        #'ha/tab-bar-tab-name-format-default)
+#+END_SRC
 
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