- (if (and (symbolp nnmail-split-methods)
- (fboundp nnmail-split-methods))
- (let ((split
- (condition-case error-info
- ;; `nnmail-split-methods' is a function, so we
- ;; just call this function here and use the
- ;; result.
- (or (funcall nnmail-split-methods)
- (and (not nnmail-inhibit-default-split-group)
- ("bogus")))
- (error
- (nnheader-message
- 5 "Error in `nnmail-split-methods'; using `bogus' mail group: %S" error-info)
- (sit-for 1)
- '("bogus")))))
+ (if (or (and (symbolp nnmail-split-methods)
+ (fboundp nnmail-split-methods))
+ (not (consp (car-safe nnmail-split-methods)))
+ (and (listp nnmail-split-methods)
+ ;; Not a regular split method, so it has to be a
+ ;; fancy one.
+ (not (let ((top-element (car-safe nnmail-split-methods)))
+ (and (= 2 (length top-element))
+ (stringp (nth 0 top-element))
+ (stringp (nth 1 top-element)))))))
+ (let* ((method-function
+ (if (and (symbolp nnmail-split-methods)
+ (fboundp nnmail-split-methods))
+ nnmail-split-methods
+ 'nnmail-split-fancy))
+ (split
+ (condition-case error-info
+ ;; `nnmail-split-methods' is a function, so we
+ ;; just call this function here and use the
+ ;; result.
+ (or (funcall method-function)
+ (and (not nnmail-inhibit-default-split-group)
+ '("bogus")))
+ (error
+ (nnheader-message
+ 5 "Error in `nnmail-split-methods'; using `bogus' mail group: %S" error-info)
+ (sit-for 1)
+ '("bogus")))))