Variable: tabulated-list-padding
tabulated-list-padding is a buffer-local variable defined in
tabulated-list.el.gz.
Documentation
Number of characters preceding each Tabulated List mode entry.
By default, lines are padded with spaces, but you can use the
function tabulated-list-put-tag to change this.
Source Code
;; Defined in /usr/src/emacs/lisp/emacs-lisp/tabulated-list.el.gz
(defvar-local tabulated-list-padding 0
"Number of characters preceding each Tabulated List mode entry.
By default, lines are padded with spaces, but you can use the
function `tabulated-list-put-tag' to change this.")