Variable: display-line-numbers-mode-hook
display-line-numbers-mode-hook is a customizable variable defined in
display-line-numbers.el.gz.
Value
(display-line-numbers-mode--set-explicitly(var)/display-line-numbers-mode--set-explicitly(fun))
Documentation
Hook run after entering or leaving display-line-numbers-mode(var)/display-line-numbers-mode(fun).
No problems result if this variable is not bound.
add-hook automatically binds it. (This is true for all hook variables.)
Source Code
;; Defined in /usr/src/emacs/lisp/display-line-numbers.el.gz