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Drop duplicate vietnamese-tcvn coding system

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* lisp/language/vietnamese.el (vietnamese-vscii): Update docstring.
(vietnamese-tcvn, tcvn, tcvn-5712): Make them aliases of
vietnamese-vscii.
("Vietnamese"): Drop vietnamese-tcvn from coding-system values.
Update docstring.

* etc/NEWS: Announce this change.
This commit is contained in:
Ulrich Müller 2023-07-28 23:04:43 +02:00
parent 18b176280d
commit 077c34edfe
2 changed files with 22 additions and 19 deletions
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9
etc/NEWS
View file

@ -665,6 +665,15 @@ previous behavior of showing 'U' in the mode line for 'koi8-u':
(coding-system-put 'koi8-u :mnemonic ?U)
---
** 'vietnamese-tcvn' is now a coding system alias for 'vietnamese-vscii'.
VSCII-1 and TCVN-5712 are different names for the same character
encoding. Therefore, the duplicate coding system definition has been
dropped in favor of an alias.
The mode-line mnemonic for 'vietnamese-vscii' and its aliases is the
lowercase letter 'v'.
+++
** Infinities and NaNs no longer act as symbols on non-IEEE platforms.
On old platforms like the VAX that do not support IEEE floating-point,

32
lisp/language/vietnamese.el
View file

@ -28,8 +28,8 @@
;;; Commentary:
;; For Vietnamese, the character sets VISCII, VSCII and TCVN-5712 are
;; supported.
;; For Vietnamese, the coding systems VISCII, VSCII-1 (TCVN-5712),
;; VIQR and windows-1258 are supported.
;;; Code:
@ -44,13 +44,16 @@
(define-coding-system-alias 'viscii 'vietnamese-viscii)
(define-coding-system 'vietnamese-vscii
"8-bit encoding for Vietnamese VSCII-1."
"8-bit encoding for Vietnamese VSCII-1 (TCVN-5712)."
:coding-type 'charset
:mnemonic ?v
:charset-list '(vscii)
:suitable-for-file-name t)
(define-coding-system-alias 'vscii 'vietnamese-vscii)
(define-coding-system-alias 'vietnamese-tcvn 'vietnamese-vscii)
(define-coding-system-alias 'tcvn 'vietnamese-vscii)
(define-coding-system-alias 'tcvn-5712 'vietnamese-vscii)
;; (make-coding-system
;; 'vietnamese-vps 4 ?p
@ -74,7 +77,7 @@
(set-language-info-alist
"Vietnamese" '((charset viscii)
(coding-system vietnamese-viscii vietnamese-vscii
vietnamese-tcvn vietnamese-viqr windows-1258)
vietnamese-viqr windows-1258)
(nonascii-translation . viscii)
(coding-priority vietnamese-viscii)
(input-method . "vietnamese-viqr")
@ -83,12 +86,12 @@
(sample-text . "Vietnamese (Tiếng Việt) Chào bạn")
(documentation . "\
For Vietnamese, Emacs uses special charsets internally.
They can be decoded from and encoded to VISCII, VSCII, TCVN-5712, VIQR
and windows-1258. VSCII is deprecated in favor of TCVN-5712. The
Current setting gives higher priority to the coding system VISCII than
TCVN-5712. If you prefer TCVN-5712, please do: (prefer-coding-system
'vietnamese-tcvn). There are two Vietnamese input methods: VIQR and
Telex, VIQR is the default setting.")))
They can be decoded from and encoded to VISCII, VSCII-1 (TCVN-5712),
VIQR and windows-1258. The current setting gives higher priority
to the coding system VISCII than VSCII-1. If you prefer VSCII-1,
please do: (prefer-coding-system 'vietnamese-vscii). There are
two Vietnamese input methods: VIQR and Telex, VIQR is the default
setting.")))
(define-coding-system 'windows-1258
"windows-1258 encoding for Vietnamese (MIME: WINDOWS-1258)"
@ -98,15 +101,6 @@ Telex, VIQR is the default setting.")))
:mime-charset 'windows-1258)
(define-coding-system-alias 'cp1258 'windows-1258)
(define-coding-system 'vietnamese-tcvn
"8-bit encoding for Vietnamese TCVN-5712"
:coding-type 'charset
:mnemonic ?t
:charset-list '(tcvn-5712)
:suitable-for-file-name t)
(define-coding-system-alias 'tcvn 'vietnamese-tcvn)
(define-coding-system-alias 'tcvn-5712 'vietnamese-tcvn)
(provide 'vietnamese)
;;; vietnamese.el ends here