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imap.el: international/utf-7.el vs. gnus/utf7.el (was: 23.0.50; utf7-dec
From: |
Reiner Steib |
Subject: |
imap.el: international/utf-7.el vs. gnus/utf7.el (was: 23.0.50; utf7-decode failed with non latin-1 charactor) |
Date: |
Tue, 06 Nov 2007 20:53:08 +0100 |
User-agent: |
Gnus/5.110007 (No Gnus v0.7) Emacs/22.1.50 (gnu/linux) |
On Mon, Nov 05 2007, Kenichi Handa wrote:
> Jason Rumney <address@hidden> writes:
>> Probably lisp/international/utf-7.el should be fixed, and the Gnus one
>> dropped.
Please keep in mind the we want to keep the Gnus versions in
Emacs/trunk (Gnus 5.13) and Gnus/trunk (aka No Gnus) in sync. We want
to keep No Gnus compatible with Emacs 21+ (and XEmacs 21.4+). So we
need to add some compatibility code.
> I think the right thing is to uncomment all codes for
> utf-7-map in utf-7.el, and modify gnus to use normal
> encode/decode-coding-region/string with utf-7-imap.
>
> I've just committed the former change.
AFAIKS, `utf-7-encode' also accepts that FROM is a string, but it's
not documented. Can we rely on this? Could you document it, please?
> Could someone do the latter change?
A grep through Gnus' sources suggests that it only uses the functions
`utf7-encode' and `utf7-decode' in `imap.el'.
How about the following patch to gnus/utf7.el (untested)? Could you
suggest a better test instead of `(<= 23 emacs-major-version)'?
Instead of -OLD and -NEW we should use more suitable names or include
the defuns directly.
--8<---------------cut here---------------start------------->8---
--- utf7.el 04 Aug 2007 20:36:34 +0200 1.12
+++ utf7.el 06 Nov 2007 20:42:08 +0100
@@ -207,7 +207,7 @@
(mm-decode-coding-region (point-min) (point-max) 'iso-8859-1)
(mm-enable-multibyte))
-(defun utf7-encode (string &optional for-imap)
+(defun utf7-encode-OLD (string &optional for-imap)
"Encode UTF-7 STRING. Use IMAP modification if FOR-IMAP is non-nil."
(let ((default-enable-multibyte-characters t))
(with-temp-buffer
@@ -215,7 +215,7 @@
(utf7-encode-internal for-imap)
(buffer-string))))
-(defun utf7-decode (string &optional for-imap)
+(defun utf7-decode-OLD (string &optional for-imap)
"Decode UTF-7 STRING. Use IMAP modification if FOR-IMAP is non-nil."
(let ((default-enable-multibyte-characters nil))
(with-temp-buffer
@@ -224,6 +224,31 @@
(mm-enable-multibyte)
(buffer-string))))
+(defun utf7-encode-NEW (string &optional for-imap)
+ (with-temp-buffer
+ ;; (utf-7-encode FROM TO IMAP)
+ ;;
+ ;; `utf-7-encode' also accepts that FROM is a string, but it's not
+ ;; documented.
+ (utf-7-encode string nil for-imap)
+ (buffer-string)))
+
+(defun utf7-decode-NEW (string &optional for-imap)
+ (with-temp-buffer
+ (insert string)
+ (goto-char (point-min))
+ ;; (utf-7-decode LEN IMAP)
+ (utf-7-decode (buffer-size) for-imap)
+ (buffer-string)))
+
+(if (and (require 'utf-7 nil t) ;; Additional test for XEmacs?
+ (<= 23 emacs-major-version)) ;; A feature test would be better
+ (progn
+ (defalias 'utf7-encode 'utf7-encode-NEW)
+ (defalias 'utf7-decode 'utf7-decode-NEW))
+ (defalias 'utf7-encode 'utf7-encode-OLD)
+ (defalias 'utf7-decode 'utf7-decode-OLD))
+
(provide 'utf7)
;;; arch-tag: 96078b55-85c7-4161-aed2-932c24b282c7
--8<---------------cut here---------------end--------------->8---
Bye, Reiner.
--
,,,
(o o)
---ooO-(_)-Ooo--- | PGP key available | http://rsteib.home.pages.de/