Function: column-number-mode

column-number-mode is an interactive and byte-compiled function defined in simple.el.gz.

Signature

(column-number-mode &optional ARG)

Documentation

Toggle column number display in the mode line (Column Number mode).

See mode-line-position-column-format for how this number is presented.

This is a global minor mode. If called interactively, toggle the Column-Number mode mode. If the prefix argument is positive, enable the mode, and if it is zero or negative, disable the mode.

If called from Lisp, toggle the mode if ARG is toggle. Enable the mode if ARG is nil, omitted, or is a positive number. Disable the mode if ARG is a negative number.

To check whether the minor mode is enabled in the current buffer, evaluate (default-value \=column-number-mode)'.

The mode's hook is called both when the mode is enabled and when it is disabled.

View in manual

Probably introduced at or before Emacs version 19.30.

Key Bindings

Source Code

;; Defined in /usr/src/emacs/lisp/simple.el.gz
(define-minor-mode column-number-mode
  "Toggle column number display in the mode line (Column Number mode).

See `mode-line-position-column-format' for how this number is
presented."
  :global t :group 'mode-line)