Rename org-deadline-is-close to have -p suffix

* lisp/org-agenda.el
  (org-agenda-check-for-timestamp-as-reason-to-ignore-todo-item):
* lisp/org.el (org-deadline-close): Rename to...
  (org-deadline-close-p): ...this.

* testing/lisp/test-org.el (test-org/deadline-close): Rename to...
  (test-org/deadline-close-p): ...this.

lisp/org-agenda.el

@@ -5550,7 +5550,7 @@ This function is invoked if `org-agenda-todo-ignore-deadlines',
 	       (cond
 		((memq org-agenda-todo-ignore-deadlines '(t all)) t)
 		((eq org-agenda-todo-ignore-deadlines 'far)
-		 (not (org-deadline-close (match-string 1))))
+		 (not (org-deadline-close-p (match-string 1))))
 		((eq org-agenda-todo-ignore-deadlines 'future)
 		 (> (org-time-stamp-to-now
 		     (match-string 1) org-agenda-todo-ignore-time-comparison-use-seconds) 0))
@@ -5560,7 +5560,7 @@ This function is invoked if `org-agenda-todo-ignore-deadlines',
 		((numberp org-agenda-todo-ignore-deadlines)
 		 (org-agenda-todo-custom-ignore-p
 		  (match-string 1) org-agenda-todo-ignore-deadlines))
-		(t (org-deadline-close (match-string 1)))))
+		(t (org-deadline-close-p (match-string 1)))))
 	  (and org-agenda-todo-ignore-timestamp
 	       (let ((buffer (current-buffer))
 		     (regexp

lisp/org.el

@@ -17477,7 +17477,7 @@ If SECONDS is non-nil, return the difference in seconds."
     (- (funcall fdiff (org-time-string-to-time timestamp-string))
        (funcall fdiff (current-time)))))
 
-(defun org-deadline-close (timestamp-string &optional ndays)
+(defun org-deadline-close-p (timestamp-string &optional ndays)
   "Is the time in TIMESTAMP-STRING close to the current date?"
   (setq ndays (or ndays (org-get-wdays timestamp-string)))
   (and (<= (org-time-stamp-to-now timestamp-string) ndays)
@@ -17533,7 +17533,7 @@ days.  If the prefix is a raw \\[universal-argument] prefix, all deadlines are s
 	 (case-fold-search nil)
 	 (regexp (concat "\\<" org-deadline-string " *<\\([^>]+\\)>"))
 	 (callback
-	  (lambda () (org-deadline-close (match-string 1) org-warn-days))))
+	  (lambda () (org-deadline-close-p (match-string 1) org-warn-days))))
     (message "%d deadlines past-due or due within %d days"
 	     (org-occur regexp nil callback)
 	     org-warn-days)))

testing/lisp/test-org.el

@@ -364,33 +364,33 @@
 	  (calendar-gregorian-from-absolute
 	   (org-closest-date "<2012-03-29 +2y>" "<2014-03-04>" 'future)))))
 
-(ert-deftest test-org/deadline-close ()
-  "Test `org-deadline-close' specifications."
+(ert-deftest test-org/deadline-close-p ()
+  "Test `org-deadline-close-p' specifications."
   ;; Pretend that the current time is 2016-06-03 Fri 01:43
   (flet ((current-time () '(22353 6425 905205 644000)))
     ;; Timestamps are close if they are within `ndays' of lead time.
     (org-test-with-temp-text "* Heading"
-      (should (org-deadline-close "2016-06-03 Fri" 0))
-      (should (org-deadline-close "2016-06-02 Thu" 0))
-      (should-not (org-deadline-close "2016-06-04 Sat" 0))
-      (should (org-deadline-close "2016-06-04 Sat" 1))
-      (should (org-deadline-close "2016-06-03 Fri 12:00" 0)))
+      (should (org-deadline-close-p "2016-06-03 Fri" 0))
+      (should (org-deadline-close-p "2016-06-02 Thu" 0))
+      (should-not (org-deadline-close-p "2016-06-04 Sat" 0))
+      (should (org-deadline-close-p "2016-06-04 Sat" 1))
+      (should (org-deadline-close-p "2016-06-03 Fri 12:00" 0)))
     ;; Read `ndays' from timestamp if argument not given.
     (org-test-with-temp-text "* H"
-      (should (org-deadline-close "2016-06-04 Sat -1d"))
-      (should-not (org-deadline-close "2016-06-04 Sat -0d"))
-      (should (org-deadline-close "2016-06-10 Fri -1w"))
-      (should-not (org-deadline-close "2016-06-11 Sat -1w")))
+      (should (org-deadline-close-p "2016-06-04 Sat -1d"))
+      (should-not (org-deadline-close-p "2016-06-04 Sat -0d"))
+      (should (org-deadline-close-p "2016-06-10 Fri -1w"))
+      (should-not (org-deadline-close-p "2016-06-11 Sat -1w")))
     ;; Prefer `ndays' argument over lead time in timestamp.
     (org-test-with-temp-text "* H"
-      (should (org-deadline-close "2016-06-04 Sat -0d" 1))
-      (should-not (org-deadline-close "2016-06-04 Sat -0d" 0)))
+      (should (org-deadline-close-p "2016-06-04 Sat -0d" 1))
+      (should-not (org-deadline-close-p "2016-06-04 Sat -0d" 0)))
     ;; Completed tasks are never close.
     (let ((org-todo-keywords '(("TODO" "|" "DONE"))))
       (org-test-with-temp-text "* TODO Heading"
-	(should (org-deadline-close "2016-06-03")))
+	(should (org-deadline-close-p "2016-06-03")))
       (org-test-with-temp-text "* DONE Heading"
-	(should-not (org-deadline-close "2016-06-03"))))))
+	(should-not (org-deadline-close-p "2016-06-03"))))))
 
 
 ;;; Drawers