Synch to No Gnus 200409231508.

[elisp/gnus.git-] / lisp / nnmail.el

diff --git a/lisp/nnmail.el b/lisp/nnmail.el
index 2e5d87a..c3b5304 100644 (file)
--- a/lisp/nnmail.el
+++ b/lisp/nnmail.el
@@ -1,5 +1,5 @@
 ;;; nnmail.el --- mail support functions for the Gnus mail backends
-;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
 ;;        Free Software Foundation, Inc.
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
@@ -31,7 +31,6 @@
 (require 'gnus)                                ; for macro gnus-kill-buffer, at least
 (require 'nnheader)
 (require 'message)
-(require 'custom)
 (require 'gnus-util)
 (require 'mail-source)
 
@@ -223,6 +222,7 @@ From header will be expired to the group \"nnfolder:Work\";
 articles containing the sting \"IMPORTANT\" in the Subject header will
 be expired to the group \"nnfolder:IMPORTANT.YYYY.MMM\"; and
 everything else will be expired to \"nnfolder:Archive-YYYY\"."
+  :version "21.4"
   :group 'nnmail-expire
   :type '(repeat (list (choice :tag "Match against"
                               (string :tag "Header")
@@ -381,12 +381,8 @@ This is copy of the `lazy' widget in Emacs 21.4 provided for compatibility."
                   (widget-apply (car (widget-get widget :children))
                                 :value-inline))
   :default-get (lambda (widget)
-                 ;;(widget-default-get
-                 ;; (widget-convert (widget-get widget :type))))
-                ;; `widget-default-get' isn't available in Mule 2.
-                (let ((w (widget-convert (widget-get widget :type))))
-                  (or (widget-get w :value)
-                      (widget-apply w :default-get))))
+                 (widget-default-get
+                  (widget-convert (widget-get widget :type))))
   :match (lambda (widget value)
            (widget-apply (widget-convert (widget-get widget :type))
                          :match value))
@@ -470,7 +466,7 @@ FIELD must match a complete field name.  VALUE must match a complete
 word according to the `nnmail-split-fancy-syntax-table' syntax table.
 You can use \".*\" in the regexps to match partial field names or words.
 
-FIELD and VALUE can also be lisp symbols, in that case they are expanded
+FIELD and VALUE can also be Lisp symbols, in that case they are expanded
 as specified in `nnmail-split-abbrev-alist'.
 
 GROUP can contain \\& and \\N which will substitute from matching
@@ -561,11 +557,13 @@ parameter.  It should return nil, `warn' or `delete'."
 
 (defcustom nnmail-mail-splitting-charset nil
   "Default charset to be used when splitting incoming mail."
+  :version "21.4"
   :group 'nnmail
   :type 'symbol)
 
 (defcustom nnmail-mail-splitting-decodes t
   "Whether the nnmail splitting functionality should MIME decode headers."
+  :version "21.4"
   :group 'nnmail
   :type 'boolean)
 
@@ -578,6 +576,13 @@ by anything."
   :group 'nnmail
   :type 'boolean)
 
+(defcustom nnmail-split-lowercase-expanded t
+  "Whether to lowercase expanded entries (i.e. \\N) when splitting mails.
+This avoids the creation of multiple groups when users send to an address
+using different case (i.e. mailing-list@domain vs Mailing-List@Domain)."
+  :group 'nnmail
+  :type 'boolean)
+
 ;;; Internal variables.
 
 (defvar nnmail-article-buffer " *nnmail incoming*"
@@ -622,8 +627,7 @@ by anything."
        (after-insert-file-functions nil))
     (condition-case ()
        (let ((auto-mode-alist (nnheader-auto-mode-alist))
-             (file-name-coding-system nnmail-pathname-coding-system)
-             (pathname-coding-system nnmail-pathname-coding-system))
+             (file-name-coding-system nnmail-pathname-coding-system))
          (insert-file-contents-as-coding-system
           nnmail-file-coding-system file)
          t)
@@ -671,7 +675,7 @@ nn*-request-list should have been called before calling this function."
     (while (not (eobp))
       (condition-case err
          (progn
-           (narrow-to-region (point) (gnus-point-at-eol))
+           (narrow-to-region (point) (point-at-eol))
            (setq group (read buffer))
            (unless (stringp group)
              (setq group (symbol-name group)))
@@ -689,8 +693,7 @@ nn*-request-list should have been called before calling this function."
 
 (defun nnmail-save-active (group-assoc file-name)
   "Save GROUP-ASSOC in ACTIVE-FILE."
-  (let ((coding-system-for-write nnmail-active-file-coding-system)
-       (output-coding-system nnmail-active-file-coding-system))
+  (let ((coding-system-for-write nnmail-active-file-coding-system))
     (when file-name
       (with-temp-file file-name
        (nnmail-generate-active group-assoc)))))
@@ -1110,7 +1113,7 @@ FUNC will be called with the group name to determine the article number."
        (while (not (eobp))
          (unless (< (move-to-column nnmail-split-header-length-limit)
                     nnmail-split-header-length-limit)
-           (delete-region (point) (gnus-point-at-eol)))
+           (delete-region (point) (point-at-eol)))
          (forward-line 1))
        ;; Allow washing.
        (goto-char (point-min))
@@ -1312,12 +1315,8 @@ to actually put the message in the right group."
 (defun nnmail-split-fancy ()
   "Fancy splitting method.
 See the documentation for the variable `nnmail-split-fancy' for details."
-  (let ((syntab (syntax-table)))
-    (unwind-protect
-       (progn
-         (set-syntax-table nnmail-split-fancy-syntax-table)
-         (nnmail-split-it nnmail-split-fancy))
-      (set-syntax-table syntab))))
+  (with-syntax-table nnmail-split-fancy-syntax-table
+    (nnmail-split-it nnmail-split-fancy)))
 
 (defvar nnmail-split-cache nil)
 ;; Alist of split expressions their equivalent regexps.
@@ -1474,7 +1473,10 @@ See the documentation for the variable `nnmail-split-fancy' for details."
              (setq N 0)
            (setq N (- c ?0)))
          (when (match-beginning N)
-           (push (buffer-substring (match-beginning N) (match-end N))
+           (push (if nnmail-split-lowercase-expanded
+                     (downcase (buffer-substring (match-beginning N)
+                                                 (match-end N)))
+                   (buffer-substring (match-beginning N) (match-end N)))
                  expanded))))
       (setq pos (1+ pos)))
     (if did-expand
@@ -1619,7 +1621,7 @@ See the documentation for the variable `nnmail-split-fancy' for details."
        (skip-chars-forward "^\n\r\t")
        (unless (looking-at "[\r\n]")
          (forward-char 1)
-         (buffer-substring (point) (gnus-point-at-eol)))))))
+         (buffer-substring (point) (point-at-eol)))))))
 
 ;; Function for nnmail-split-fancy: look up all references in the
 ;; cache and if a match is found, return that group.
@@ -1889,8 +1891,7 @@ See the Info node `(gnus)Fancy Mail Splitting' for more details."
 
 (defun nnmail-write-region (start end filename &optional append visit lockname)
   "Do a `write-region', and then set the file modes."
-  (let ((file-name-coding-system nnmail-pathname-coding-system)
-       (pathname-coding-system nnmail-pathname-coding-system))
+  (let ((file-name-coding-system nnmail-pathname-coding-system))
     (write-region-as-coding-system
      nnmail-file-coding-system start end filename append visit lockname)
     (set-file-modes filename nnmail-default-file-modes)))