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+;;; philippine.el --- Philippine languages support  -*- coding: utf-8; lexical-binding: t; -*-
+
+;; Copyright (C) 2022 Free Software Foundation, Inc.
+
+;; Author: समीर सिंह Sameer Singh <lumarzeli30@gmail.com>
+;; Keywords: multilingual, input method, i18n, Philippines
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs 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 General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; This file contains definitions of Philippine language environments, and
+;; setups for displaying the scripts used there.
+
+;;; Code:
+
+(set-language-info-alist
+ "Tagalog" '((charset unicode)
+             (coding-system utf-8)
+             (coding-priority utf-8)
+             (input-method . "tagalog")
+             (sample-text . "Tagalog (ᜊᜌ᜔ᜊᜌᜒᜈ᜔)	ᜃᜓᜋᜓᜐ᜔ᜆ")
+             (documentation . "\
+Tagalog language using the Baybayin script is supported in
+this language environment.")))
+
+(set-language-info-alist
+ "Hanunoo" '((charset unicode)
+             (coding-system utf-8)
+             (coding-priority utf-8)
+             (input-method . "hanunoo")
+             (sample-text . "Hanunoo (ᜱᜨᜳᜨᜳᜢ)	ᜫᜬᜧ᜴ ᜣᜭᜯᜥ᜴ ᜰᜲᜭᜥ᜴")
+             (documentation . "\
+Philippine Language Hanunoo is supported in this language environment.")))
+
+(set-language-info-alist
+ "Buhid" '((charset unicode)
+           (coding-system utf-8)
+           (coding-priority utf-8)
+           (input-method . "buhid")
+           (documentation . "\
+Philippine Language Buhid is supported in this language environment.")))
+
+(set-language-info-alist
+ "Tagbanwa" '((charset unicode)
+             (coding-system utf-8)
+             (coding-priority utf-8)
+             (input-method . "tagbanwa")
+             (sample-text . "Tagbanwa (ᝦᝪᝯ)	ᝫᝩᝬᝥ ᝣᝮᝧᝯ")
+             (documentation . "\
+Philippine Languages Tagbanwa are supported in this language environment.")))
+
+;; Tagalog composition rules
+(let ((akshara              "[\x1700-\x1711\x171F]")
+      (vowel                "[\x1712\x1713]")
+      (virama               "\x1714")
+      (pamudpod             "\x1715"))
+  (set-char-table-range composition-function-table
+                        '(#x1714 . #x1714)
+                        (list (vector
+                               ;; Akshara virama syllables
+                               (concat akshara virama vowel "?")
+                               1 'font-shape-gstring)))
+  (set-char-table-range composition-function-table
+                        '(#x1715 . #x1715)
+                        (list (vector
+                               ;; Akshara pamudpod syllables
+                               (concat akshara pamudpod vowel "?")
+                               1 'font-shape-gstring))))
+
+;; Hanunoo composition rules
+(let ((akshara              "[\x1720-\x1731]")
+      (vowel                "[\x1732\x1733]")
+      (pamudpod             "\x1734"))
+  (set-char-table-range composition-function-table
+                        '(#x1734 . #x1734)
+                        (list (vector
+                               ;; Akshara pamudpod syllables
+                               (concat akshara pamudpod vowel "?")
+                               1 'font-shape-gstring))))
+
+(provide 'philippine)
+;;; philippine.el ends here