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;;; lrt.el --- Quail package for inputting Lao characters by LRT method -*-coding: utf-8;-*-
;; Copyright (C) 1998, 2001-2018 Free Software Foundation, Inc.
;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
;; 2006, 2007, 2008, 2009, 2010, 2011
;; National Institute of Advanced Industrial Science and Technology (AIST)
;; Registration Number H14PRO021
;; Keywords: multilingual, input method, Lao, LRT.
;; 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:
;;; Code:
(require 'quail)
(require 'lao-util)
;; LRT (Lao Roman Transcription) input method accepts the following
;; key sequence:
;; consonant [+ semi-vowel-sign-lo ] + vowel [+ maa-sakod ] [+ tone-mark ]
(defun quail-lrt-update-translation (control-flag)
(if (integerp control-flag)
;; Non-composable character typed.
(setq quail-current-str
(buffer-substring (overlay-start quail-overlay)
(overlay-end quail-overlay))
unread-command-events
(append
(substring quail-current-key control-flag)
unread-command-events))
(let ((lao-str (lao-transcribe-roman-to-lao-string quail-current-key)))
(if (> (aref lao-str 0) 255)
(setq quail-current-str lao-str)
(or quail-current-str
(setq quail-current-str quail-current-key)))))
control-flag)
(quail-define-package
"lao-lrt" "Lao" "ລR" t
"Lao input method using LRT (Lao Roman Transcription).
`\\' (backslash) + number-key => ໐,໑,໒,... LAO DIGIT ZERO, ONE, TWO, ...
`\\' (backslash) + `\\' => ໆ LAO KO LA (REPETITION)
`\\' (backslash) + `$' => ຯ LAO ELLIPSIS
"
nil 'forget-last-selection 'deterministic 'kbd-translate 'show-layout
nil nil nil 'quail-lrt-update-translation nil t)
;; LRT (Lao Roman Transcription) input method accepts the following
;; key sequence:
;; consonant [ semi-vowel-sign-lo ] vowel [ maa-sakod ] [ tone-mark ]
(quail-install-map
(quail-map-from-table
'((base-state (lao-transcription-consonant-alist . sv-state)
lao-transcription-vowel-alist
lao-transcription-tone-alist)
(sv-state (lao-transcription-semi-vowel-alist . v-state)
(lao-transcription-vowel-alist . mt-state))
(v-state (lao-transcription-vowel-alist . mt-state))
(mt-state (lao-transcription-maa-sakod-alist . t-state)
lao-transcription-tone-alist)
(t-state lao-transcription-tone-alist))))
;;; lrt.el ends here
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