*** empty log message ***

[gnus] / lisp / nnmail.el

diff --git a/lisp/nnmail.el b/lisp/nnmail.el
index cc42f6c..d1fc351 100644 (file)
--- a/lisp/nnmail.el
+++ b/lisp/nnmail.el
@@ -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)
 (require 'mm-util)
@@ -467,7 +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
@@ -575,6 +574,13 @@ 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*"
@@ -1465,7 +1471,10 @@ 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
@@ -1992,4 +2001,5 @@ Doesn't change point."
 
 (provide 'nnmail)
 
+;;; arch-tag: fe8f671a-50db-428a-bb5d-f00462f72ed7
 ;;; nnmail.el ends here