Variable: line-spacing

line-spacing is a customizable and buffer-local variable defined in buffer.c.

Documentation

Additional space to put between lines when displaying a buffer.

The space is measured in pixels, and put below lines on graphic displays, see display-graphic-p. If value is a floating point number, it specifies the spacing relative to the default frame line height. A value of nil means add no extra space.

This variable was added, or its default value changed, in Emacs 22.1.

Probably introduced at or before Emacs version 21.1.

Source Code

// Defined in /usr/src/emacs/src/buffer.c
  DEFVAR_PER_BUFFER ("line-spacing",
		     &BVAR (current_buffer, extra_line_spacing), Qnumberp,
		     doc: /* Additional space to put between lines when displaying a buffer.
The space is measured in pixels, and put below lines on graphic displays,
see `display-graphic-p'.
If value is a floating point number, it specifies the spacing relative
to the default frame line height.  A value of nil means add no extra space.  */);