Variable: selective-display

selective-display is a buffer-local variable defined in buffer.c.

Documentation

Non-nil enables selective display.

An integer N as value means display only lines that start with less than N columns of space.

A value of t means that the character ^M makes itself and all the rest of the line invisible; also, when saving the buffer in a file, save the ^M as a newline. This usage is obsolete; use overlays or text properties instead.

View in manual

Probably introduced at or before Emacs version 18.

Source Code

// Defined in /usr/src/emacs/src/buffer.c
  DEFVAR_PER_BUFFER ("selective-display", &BVAR (current_buffer, selective_display),
		     Qnil,
		     doc: /* Non-nil enables selective display.

An integer N as value means display only lines
that start with less than N columns of space.

A value of t means that the character ^M makes itself and
all the rest of the line invisible; also, when saving the buffer
in a file, save the ^M as a newline.  This usage is obsolete; use
overlays or text properties instead.  */);