Variable: tab-line-left-button
tab-line-left-button is a variable defined in tab-line.el.gz.
Value
#(" <" 0 2
(keymap
(keymap (13 . tab-line-new-tab)
(tab-line keymap
(touchscreen-begin . tab-line-hscroll-left)
(down-mouse-2 . tab-line-hscroll-left)
(down-mouse-1 . tab-line-hscroll-left)))
mouse-face tab-line-highlight help-echo "Click to scroll left"
rear-nonsticky nil))
Documentation
Button for scrolling horizontally to the left.
Source Code
;; Defined in /usr/src/emacs/lisp/tab-line.el.gz
(defvar tab-line-left-button
(propertize (icon-string 'tab-line-left)
'rear-nonsticky nil
'keymap tab-line-left-map
'mouse-face 'tab-line-highlight
'help-echo "Click to scroll left")
"Button for scrolling horizontally to the left.")