Variable: display-line-numbers-width

display-line-numbers-width is a customizable and buffer-local variable defined in xdisp.c.

Documentation

Minimum width of space reserved for line number display.

A positive number means reserve that many columns for line numbers, even if the actual number needs less space. The default value of nil means compute the space dynamically. Any other value is treated as nil.

This variable was added, or its default value changed, in Emacs 26.1.

View in manual

Source Code

// Defined in /usr/src/emacs/src/xdisp.c
  DEFVAR_LISP ("display-line-numbers-width", Vdisplay_line_numbers_width,
    doc: /* Minimum width of space reserved for line number display.
A positive number means reserve that many columns for line numbers,
even if the actual number needs less space.
The default value of nil means compute the space dynamically.
Any other value is treated as nil.  */);