;;; -*- lexical-binding: t -*-
;;
;; this file:
;;   https://dataswamp.org/~incal/emacs-init/cache.el

(let ((cache-file (format "%svar/data-cache.el" user-emacs-directory)))
  (defun save-char-table ()
    (with-temp-buffer
      (insert "(setq standard-display-table\n\n")
      (prin1 standard-display-table (current-buffer))
      (insert "\n\n)")
      (write-file cache-file) ))
  (declare-function save-char-table nil)

  (defun load-char-table ()
    (when (file-exists-p cache-file)
      (load-file cache-file) ))
  (declare-function load-char-table nil) )

(defun set-replacement-char-table ()
  (unless (load-char-table)
    (let ((tbl standard-display-table)) ;; WARNING, ugly code ahead!
      (set-char-table-range tbl '(#x102 . #x103)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x108 . #x10b)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x10e . #x111)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x114 . #x115)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x11a . #x121)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x124 . #x129)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x12c . #x12d)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x130 . #x135)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x138 . #x13a)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x13d . #x140)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x147 . #x14b)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x14e . #x155)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x158 . #x159)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x15c . #x15f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x162 . #x169)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x16c . #x171)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x174 . #x178)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x17f . #x2c6)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2c8 . #x2c8)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2ca . #x2d8)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2da . #x2da)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2dc . #x390)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x393 . #x394)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x398 . #x398)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x39b . #x39b)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x39e . #x39e)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x3a0 . #x3a0)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x3a2 . #x3a3)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x3a5 . #x3a6)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x3a8 . #x3bb)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x3bd . #x3bf)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x3c1 . #x400)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x402 . #x404)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x407 . #x407)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x409 . #x40f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x411 . #x411)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x413 . #x414)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x416 . #x419)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x41b . #x41b)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x41f . #x41f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x423 . #x424)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x426 . #x42f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x431 . #x434)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x436 . #x43d)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x43f . #x43f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x442 . #x442)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x444 . #x444)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x446 . #x450)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x452 . #x454)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x457 . #x457)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x459 . #x4ad)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x4af . #x1fff)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x200b . #x200f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2016 . #x2017)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x201b . #x201b)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x201f . #x201f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2023 . #x2025)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2027 . #x202e)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2031 . #x2038)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x203b . #x20ab)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x20ad . #x2115)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2117 . #x2121)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2123 . #x2129)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x212c . #x218f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2194 . #x2211)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2213 . #x2247)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2249 . #x225f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2261 . #x2263)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2266 . #x2269)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x226c . #x2294)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2297 . #x2297)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x229a . #x229a)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x229d . #x245f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2469 . #x24b5)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x24eb . #x24ff)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2580 . #x2587)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2589 . #x2590)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2593 . #x259f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25a1 . #x25ad)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25af . #x25b1)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25b3 . #x25b3)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25b5 . #x25b5)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25b7 . #x25b7)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25b9 . #x25bb)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25bd . #x25bd)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25bf . #x25bf)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25c1 . #x25c1)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25c3 . #x25c7)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25c9 . #x25ce)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x25d0 . #x260f)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2613 . #x2665)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2667 . #x2716)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2719 . #x2bbc)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#x2bbe . #xfffc)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))
      (set-char-table-range tbl '(#xfffe . #x10ffff)
                            (vconcat (list (make-glyph-code #xfffd 'homoglyph))))

      (save-char-table) )))

(set-replacement-char-table)

(provide 'cache)