From c99acd50f06eb62b27f0cf51d894fc2314a86056 Mon Sep 17 00:00:00 2001 From: yamaoka Date: Fri, 17 Dec 2004 16:09:27 +0000 Subject: [PATCH] Synch to No Gnus 200412171608. --- lisp/ChangeLog | 10 +++++++ lisp/mm-util.el | 85 +++++++++++++++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 93 insertions(+), 2 deletions(-) diff --git a/lisp/ChangeLog b/lisp/ChangeLog index d5f9646..9088846 100644 --- a/lisp/ChangeLog +++ b/lisp/ChangeLog @@ -1,5 +1,15 @@ 2004-12-17 Katsumi Yamaoka + * mm-util.el (mm-xemacs-find-mime-charset): New macro. + +2004-12-17 Aidan Kehoe + + * mm-util.el (mm-xemacs-find-mime-charset-1): New function used to + unify Latin characters in XEmacs. + (mm-find-mime-charset-region): Use it. + +2004-12-17 Katsumi Yamaoka + * gnus-util.el (gnus-delete-directory): New function. * gnus-agent.el (gnus-agent-delete-group): Use it. diff --git a/lisp/mm-util.el b/lisp/mm-util.el index 6bd8af9..6a11e97 100644 --- a/lisp/mm-util.el +++ b/lisp/mm-util.el @@ -587,6 +587,83 @@ This affects whether coding conversion should be attempted generally." (length (memq (coding-system-base b) priorities))) t)))) +(eval-when-compile + (autoload 'latin-unity-massage-name "latin-unity") + (autoload 'latin-unity-maybe-remap "latin-unity") + (autoload 'latin-unity-representations-feasible-region "latin-unity") + (autoload 'latin-unity-representations-present-region "latin-unity") + (defvar latin-unity-coding-systems) + (defvar latin-unity-ucs-list)) + +(defun mm-xemacs-find-mime-charset-1 (begin end) + "Determine which MIME charset to use to send region as message. +This uses the XEmacs-specific latin-unity package to better handle the +case where identical characters from diverse ISO-8859-? character sets +can be encoded using a single one of the corresponding coding systems. + +It treats `mm-coding-system-priorities' as the list of preferred +coding systems; a useful example setting for this list in Western +Europe would be '(iso-8859-1 iso-8859-15 utf-8), which would default +to the very standard Latin 1 coding system, and only move to coding +systems that are less supported as is necessary to encode the +characters that exist in the buffer. + +Latin Unity doesn't know about those non-ASCII Roman characters that +are available in various East Asian character sets. As such, its +behavior if you have a JIS 0212 LATIN SMALL LETTER A WITH ACUTE in a +buffer and it can otherwise be encoded as Latin 1, won't be ideal. +But this is very much a corner case, so don't worry about it." + (let ((systems mm-coding-system-priorities) csets psets curset) + + ;; Load the Latin Unity library, if available. + (when (and (not (featurep 'latin-unity)) (locate-library "latin-unity")) + (require 'latin-unity)) + + ;; Now, can we use it? + (if (featurep 'latin-unity) + (progn + (setq csets (latin-unity-representations-feasible-region begin end) + psets (latin-unity-representations-present-region begin end)) + + (catch 'done + + ;; Pass back the first coding system in the preferred list + ;; that can encode the whole region. + (dolist (curset systems) + (setq curset (latin-unity-massage-name 'buffer-default curset)) + + ;; If the coding system is a universal coding system, then + ;; it can certainly encode all the characters in the region. + (if (memq curset latin-unity-ucs-list) + (throw 'done (list curset))) + + ;; If a coding system isn't universal, and isn't in + ;; the list that latin unity knows about, we can't + ;; decide whether to use it here. Leave that until later + ;; in `mm-find-mime-charset-region' function, whence we + ;; have been called. + (unless (memq curset latin-unity-coding-systems) + (throw 'done nil)) + + ;; Right, we know about this coding system, and it may + ;; conceivably be able to encode all the characters in + ;; the region. + (if (latin-unity-maybe-remap begin end curset csets psets t) + (throw 'done (list curset)))) + + ;; Can't encode using anything from the + ;; `mm-coding-system-priorities' list. + ;; Leave `mm-find-mime-charset' to do most of the work. + nil)) + + ;; Right, latin unity isn't available; let `mm-find-charset-region' + ;; take its default action, which equally applies to GNU Emacs. + nil))) + +(defmacro mm-xemacs-find-mime-charset (begin end) + (when (featurep 'xemacs) + `(mm-xemacs-find-mime-charset-1 ,begin ,end))) + (defun mm-find-mime-charset-region (b e &optional hack-charsets) "Return the MIME charsets needed to encode the region between B and E. nil means ASCII, a single-element list represents an appropriate MIME @@ -628,8 +705,12 @@ charset, and a longer list means no appropriate charset." (setq systems nil charsets (list cs)))))) charsets)) - ;; Otherwise we're not multibyte, we're XEmacs, or a single - ;; coding system won't cover it. + ;; If we're XEmacs, and some coding system is appropriate, + ;; mm-xemacs-find-mime-charset will return an appropriate list. + ;; Otherwise, we'll get nil, and the next setq will get invoked. + (setq charsets (mm-xemacs-find-mime-charset b e)) + + ;; We're not multibyte, or a single coding system won't cover it. (setq charsets (mm-delete-duplicates (mapcar 'mm-mime-charset -- 1.7.10.4