;; referred to Nana-gnus 6.13.5.
(setq value (cdr (assq value nnmail-split-abbrev-alist))))
;; Someone might want to do a \N sub on this match, so get the
;; correct match positions.
- (re-search-backward value start-of-value))
+ (re-search-backward (concat "\\<" value "\\>") start-of-value))
(dolist (sp (nnmail-split-it (car split-rest)))
(unless (memq sp split-result)
(push sp split-result))))))