From 28ef1d4fafaf3beda0379924b6413f262f0bafe4 Mon Sep 17 00:00:00 2001
From: Yuchen Pei <id@ypei.org>
Date: Sat, 1 Jul 2023 19:13:46 +1000
Subject: Change wiki mode to using font lock keywords

---
 emacs/.emacs.d/lisp/my/wiki-faces.el | 77 ++++++++++++++++++++++++++++++++++++
 emacs/.emacs.d/lisp/my/wiki.el       | 55 ++++++++------------------
 2 files changed, 93 insertions(+), 39 deletions(-)
 create mode 100644 emacs/.emacs.d/lisp/my/wiki-faces.el

(limited to 'emacs/.emacs.d/lisp')

diff --git a/emacs/.emacs.d/lisp/my/wiki-faces.el b/emacs/.emacs.d/lisp/my/wiki-faces.el
new file mode 100644
index 0000000..2c35722
--- /dev/null
+++ b/emacs/.emacs.d/lisp/my/wiki-faces.el
@@ -0,0 +1,77 @@
+;;; wiki-faces.el -- faces for wiki-mode -*- lexical-binding: t -*-
+
+;; Copyright (C) 2023 Free Software Foundation.
+
+;; Author: Yuchen Pei <id@ypei.org>
+;; Package-Requires: ((emacs "28.2"))
+
+;; This file is part of dotted.
+
+;; dotted is free software: you can redistribute it and/or modify it under
+;; the terms of the GNU Affero General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; dotted is distributed in the hope that it will be useful, but WITHOUT
+;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General
+;; Public License for more details.
+
+;; You should have received a copy of the GNU Affero General Public
+;; License along with dotted.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; faces for wiki-mode.
+
+;;; Code:
+
+(defgroup wiki-faces nil
+  "Faces in wiki mode."
+  :tag "Wiki Faces"
+  :group 'wiki-appearance)
+
+(defface wiki-level-1 '((t :inherit outline-1))
+  "Face used for level 1 headlines."
+  :group 'wiki-faces)
+
+(defvar wiki-level-1 'wiki-level-1
+  "Face used for level 1 headlines.")
+
+(defface wiki-level-2 '((t :inherit outline-2))
+  "Face used for level 2 headlines."
+  :group 'wiki-faces)
+
+(defvar wiki-level-2 'wiki-level-2
+  "Face used for level 2 headlines.")
+
+(defface wiki-level-3 '((t :inherit outline-3))
+  "Face used for level 3 headlines."
+  :group 'wiki-faces)
+
+(defvar wiki-level-3 'wiki-level-3
+  "Face used for level 3 headlines.")
+
+(defface wiki-level-4 '((t :inherit outline-4))
+  "Face used for level 4 headlines."
+  :group 'wiki-faces)
+
+(defvar wiki-level-4 'wiki-level-4
+  "Face used for level 4 headlines.")
+
+(defface wiki-level-5 '((t :inherit outline-5))
+  "Face used for level 5 headlines."
+  :group 'wiki-faces)
+
+(defvar wiki-level-5 'wiki-level-5
+  "Face used for level 5 headlines.")
+
+(defface wiki-level-6 '((t :inherit outline-6))
+  "Face used for level 6 headlines."
+  :group 'wiki-faces)
+
+(defvar wiki-level-6 'wiki-level-6
+  "Face used for level 6 headlines.")
+
+(provide 'wiki-faces)
+;;; wiki-faces.el ends here
diff --git a/emacs/.emacs.d/lisp/my/wiki.el b/emacs/.emacs.d/lisp/my/wiki.el
index 0ef52e3..2aace73 100644
--- a/emacs/.emacs.d/lisp/my/wiki.el
+++ b/emacs/.emacs.d/lisp/my/wiki.el
@@ -25,48 +25,25 @@
 ;; A wikitext mode.
 
 ;;; Code:
-(require 'parsec)
+(require 'wiki-faces)
+
+(defvar wiki-font-lock-keywords
+  (list
+   (cons "^======.*======$" 'wiki-level-6)
+   (cons "^=====.*=====$" 'wiki-level-5)
+   (cons "^====.*====$" 'wiki-level-4)
+   (cons "^===.*===$" 'wiki-level-3)
+   (cons "^==.*==$" 'wiki-level-2)
+   (cons "^=.*=$" 'wiki-level-1)
+   ))
 
-(defun wiki-file ()
-  (parsec-many (wiki-block)))
-
-(defun wiki-block ()
-  (parsec-or (wiki-header)))
-
-(defun wiki-header ()
-  (let* ((marker (parsec-many-s (parsec-ch ?=)))
-         (raw-content
-          (string-trim
-           (parsec-many-till-s
-            (parsec-none-of ?\n)
-            (parsec-try
-             (parsec-and
-               (parsec-str marker)
-               (wiki-header-end)))))))
-    (list 'Header
-          (length marker)
-          (parsec-with-input raw-content
-            (wiki-inlines)))))
-
-(defun wiki-header-end ()
-  (parsec-and
-    (parsec-many (wiki-space))
-    (parsec-eol-or-eof)))
-
-(defun wiki-space ()
-  (parsec-one-of ?\s ?\t))
-
-(defun wiki-inlines ()
-  (parsec-many (wiki-inline)))
-
-(defun wiki-inline ()
-  (parsec-or (wiki-plain)))
+(define-derived-mode wiki-mode text-mode "Wiki"
+  "A wikitext mode."
 
-(defun wiki-plain ()
-  (list 'Plain (parsec-many1-as-string (parsec-any-ch))))
+  (setq-local comment-start "<!--")
+  (setq-local comment-end "-->")
 
-(define-derived-mode wiki-mode text-mode "Wiki"
-  "A wikitext mode.")
+  (setq-local font-lock-defaults '(wiki-font-lock-keywords t nil nil nil)))
 
 (provide 'wiki)
 ;;; wiki.el ends here
-- 
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