Function: gnus-summary-number-of-articles-in-thread

gnus-summary-number-of-articles-in-thread is a byte-compiled function defined in gnus-sum.el.gz.

Signature

(gnus-summary-number-of-articles-in-thread THREAD &optional LEVEL CHAR)

Documentation

Return the number of articles in THREAD.

This may be 0 in some cases -- if none of the articles in the thread are to be displayed.

Source Code

;; Defined in /usr/src/emacs/lisp/gnus/gnus-sum.el.gz
(defun gnus-summary-number-of-articles-in-thread (thread &optional level char)
  "Return the number of articles in THREAD.
This may be 0 in some cases -- if none of the articles in
the thread are to be displayed."
  (let* ((number
	 ;; Fix by Luc Van Eycken <Luc.VanEycken@esat.kuleuven.ac.be>.
	  (cond
	   ((not (listp thread))
	    1)
	   ((and (consp thread) (cdr thread))
	    (apply
	     #'+ 1 (mapcar
		    #'gnus-summary-number-of-articles-in-thread (cdr thread))))
	   ((null thread)
	    1)
	   ((memq (mail-header-number (car thread)) gnus-newsgroup-limit)
	    1)
	   (t 0))))
    (when (and level (zerop level) gnus-tmp-new-adopts)
      (incf number
	    (apply #'+ (mapcar
                        #'gnus-summary-number-of-articles-in-thread
                        gnus-tmp-new-adopts))))
    (if char
	(if (> number 1) gnus-not-empty-thread-mark
	  gnus-empty-thread-mark)
      number)))