1;;; thai.el --- support for Thai -*- coding: utf-8; lexical-binding: t; -*-
2
3;; Copyright (C) 1997-1998, 2000-2021 Free Software Foundation, Inc.
4;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
5;;   2005, 2006, 2007, 2008, 2009, 2010, 2011
6;;   National Institute of Advanced Industrial Science and Technology (AIST)
7;;   Registration Number H13PRO009
8;; Copyright (C) 2005
9;;   National Institute of Advanced Industrial Science and Technology (AIST)
10;;   Registration Number H14PRO021
11
12;; Keywords: multilingual, Thai, i18n
13
14;; This file is part of GNU Emacs.
15
16;; GNU Emacs is free software: you can redistribute it and/or modify
17;; it under the terms of the GNU General Public License as published by
18;; the Free Software Foundation, either version 3 of the License, or
19;; (at your option) any later version.
20
21;; GNU Emacs is distributed in the hope that it will be useful,
22;; but WITHOUT ANY WARRANTY; without even the implied warranty of
23;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
24;; GNU General Public License for more details.
25
26;; You should have received a copy of the GNU General Public License
27;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
28
29;;; Commentary:
30
31;; For Thai, the character set TIS620 is supported.
32
33;;; Code:
34
35(define-coding-system 'thai-tis620
36  "8-bit encoding for ASCII (MSB=0) and Thai TIS620 (MSB=1)."
37  :coding-type 'charset
38  :mnemonic ?T
39  :charset-list '(tis620-2533))
40
41(define-coding-system-alias 'th-tis620 'thai-tis620)
42(define-coding-system-alias 'tis620 'thai-tis620)
43(define-coding-system-alias 'tis-620 'thai-tis620)
44
45(set-language-info-alist
46 "Thai" '((tutorial . "TUTORIAL.th")
47	  (charset thai-tis620)
48	  (coding-system thai-tis620 iso-8859-11 cp874)
49	  (coding-priority thai-tis620)
50	  (nonascii-translation . tis620-2533)
51	  (input-method . "thai-kesmanee")
52	  (unibyte-display . thai-tis620)
53	  (features thai-util)
54	  (setup-function . setup-thai-language-environment-internal)
55	  (exit-function . exit-thai-language-environment-internal)
56	  (sample-text
57	   . (thai-compose-string
58	      (copy-sequence "Thai (ภาษาไทย)		สวัสดีครับ, สวัสดีค่ะ")))
59	  (documentation . t)))
60
61(define-coding-system 'cp874
62  "DOS codepage 874 (Thai)"
63  :coding-type 'charset
64  :mnemonic ?D
65  :charset-list '(cp874)
66  :mime-charset 'cp874)
67(define-coding-system-alias 'ibm874 'cp874)
68
69(define-coding-system 'iso-8859-11
70  "ISO/IEC 8859/11 (Latin/Thai)
71This is the same as `thai-tis620' with the addition of no-break-space."
72  :coding-type 'charset
73  :mnemonic ?*
74  :mime-charset 'iso-8859-11 ; not actually registered as of 2002-05-24
75  :charset-list '(iso-8859-11))
76
77;; For automatic composition.
78(let ((chars "ัิีึืฺุู็่้๊๋์ํ๎")
79      (elt '(["[ก-ฯ].[่้๊๋์]?ำ?" 1 thai-composition-function]
80	     [nil 0 thai-composition-function])))
81  (dotimes (i (length chars))
82    (aset composition-function-table (aref chars i) elt)))
83(aset composition-function-table ?ำ '(["[ก-ฯ]." 1 thai-composition-function]))
84
85(provide 'thai)
86
87;;; thai.el ends here
88