Customize fringes

Still to think about: changing the `fringe' face.  Do I want it another color?
Do I even need any buffer boundaries?  Hm....

early-init.el

@@ -73,7 +73,8 @@
         (funcall (car mode) -1)))))
 
 (add-function :after after-focus-change-function
-              (defun hook--setup-fonts ()
+              (defun acdw/first-frame-setup ()
+                ;; fonts
                 (require 'acdw-fonts)
                 (setq acdw-fonts/monospace (pcase acdw/system
                                              (:home "DejaVu Sans Mono")
@@ -90,6 +91,9 @@
                                               "Noto Color Emoji"
                                               "Apple Color Emoji"
                                               "Symbola")
+                ;; fringes
+                (acdw/setup-fringes)
+                ;; only run this once
                 (remove-function after-focus-change-function
                                  'hook--setup-fonts)))
 

init.el

@@ -63,12 +63,6 @@
 ;; see also: `acdw' and friends.  Functions here aren't big enough, or they're
 ;; too tightly bound to stuff here, to be placed in `acdw'.
 
-;; Regular modes: `text-mode' and `prog-mode'
-(defun acdw/fringe-setup ()
-  (setq-local indicate-empty-lines t
-              indicate-buffer-boundaries '((top . right)
-                                           (bottom . right))))
-
 ;; Flash the mode line
 (defun flash-mode-line ()
   "Flash the modeline as a bell."
@@ -404,7 +398,7 @@
 
   (:hook show-paren-mode
          electric-pair-local-mode
-         acdw/fringe-setup)
+         acdw/setup-fringes)
 
   (add-hook 'after-save-hook
             #'executable-make-buffer-file-executable-if-script-p))
@@ -513,7 +507,7 @@
 
 (setup text
   (:hook turn-on-auto-fill
-         acdw/fringe-setup))
+         acdw/setup-fringes))
 
 (setup uniquify
   (:option uniquify-buffer-name-style 'forward
@@ -848,7 +842,7 @@ if ripgrep is installed, otherwise `consult-grep'."
               (if olivetti-mode
                   (setq-local indicate-empty-lines nil
                               indicate-buffer-boundaries nil)
-                (acdw/fringe-setup)))))
+                (acdw/setup-fringes)))))
 
 (setup (:straight (orderless
                    :host github

lisp/acdw.el

@@ -206,6 +206,32 @@ Prompt only if there are unsaved changes."
     (run-at-time sunset-time (* 60 60 24) sunset-command)
     (run-at-time "12:00am" (* 60 60 24) sunset-command)))
 
+(defun acdw/setup-fringes ()
+  "Set up fringes how I likes 'em."
+  (define-fringe-bitmap 'left-curly-arrow
+    [#b01100000
+     #b00110000
+     #b00011000
+     #b00001100]
+    4 8 'center)
+  (define-fringe-bitmap 'right-curly-arrow
+    [#b00000011
+     #b00000110
+     #b00001100
+     #b00011000]
+    4 8 'center)
+  (define-fringe-bitmap 'left-arrow
+    [#b01100000
+     #b01010000]
+    2 8 '(top t))
+  (define-fringe-bitmap 'right-arrow
+    [#b00000011
+     #b00000101]
+    2 8 '(top t))
+  (setq-local indicate-empty-lines nil
+              indicate-buffer-boundaries '((top . right)
+                                           (bottom . right))))
+
 
 ;;; Keymaps