[nongnu] elpa/helm 72dafe1ce2 1/3: Add missing comments about ref-cells

[ELPA Syncer]

branch: elpa/helm
commit 72dafe1ce2309f78a603cbb6f08cb5990d6e5573
Author: Thierry Volpiatto <thievol@posteo.net>
Commit: Thierry Volpiatto <thievol@posteo.net>

    Add missing comments about ref-cells
---
 helm-core.el | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/helm-core.el b/helm-core.el
index af5f039e54..1f6036ac36 100644
--- a/helm-core.el
+++ b/helm-core.el
@@ -240,7 +240,7 @@ Run each function in the FUNCTIONS list in turn when called 
within
 DELAY seconds."
   (declare (indent 1))
   (let ((funs functions)
-        (iter (list nil))
+        (iter (list nil)) ; ref-cell[1].
         (timeout delay))
     (lambda ()
       (interactive)
@@ -251,6 +251,8 @@ DELAY seconds."
               (cl-loop for count from 1 to (length functions)
                        collect count)))
         next)
+    ;; By passing a list containing a single 'nil' element [1] as ITERATOR we
+    ;; avoid using a global var.
     (unless (and (car iterator)
                  ;; Reset iterator when another key is pressed.
                  (eq this-command real-last-command))