I want to complete by Tab when using find-file, so I bind a function helm-execute-persistent-action to Tab like this.
;; For find-file etc.
(define-key helm-read-file-map (kbd "TAB") 'helm-execute-persistent-action)
;; For helm-find-files etc.
(define-key helm-find-files-map (kbd "TAB") 'helm-execute-persistent-action)
This is much better for me. But there is small problem still, the function expand symlink to original path.
Is there option to disable expanding symbolic link?