Variable: indicate-empty-lines
indicate-empty-lines is a customizable and buffer-local variable
defined in buffer.c.
Documentation
Visually indicate unused ("empty") screen lines after the buffer end.
If non-nil, a bitmap is displayed in the left fringe of a window on graphical displays for each screen line that doesn't correspond to any buffer text.
Probably introduced at or before Emacs version 21.1.
Aliases
Source Code
// Defined in /usr/src/emacs/src/buffer.c
DEFVAR_PER_BUFFER ("indicate-empty-lines",
&BVAR (current_buffer, indicate_empty_lines), Qnil,
doc: /* Visually indicate unused ("empty") screen lines after the buffer end.
If non-nil, a bitmap is displayed in the left fringe of a window
on graphical displays for each screen line that doesn't correspond
to any buffer text. */);