* helm-regexp.el (helm-source-moccur): Issue #396 remove reference to no more used helm-m-occur-idle-delay.
Issue #386 Notify prefix arg in mode-line with helm-M-x.
* helm-command.el (helm-M-x--notify-prefix-arg): new.
(helm-M-x): Run a timer to notify prefix-arg.
* helm.el (helm--mode-line-display-prefarg): New internal.
(helm-display-mode-line): allow notifying prefix arg, take one more arg 'force.
Issue #386 Reset helm--mode-line-display-prefarg in helm-M-x.
* helm-command.el (helm-M-x): Reset helm--mode-line-display-prefarg when done. This avoid showing prefix arg in next helm commands runned from M-x.