Function: vt100-wide-mode

vt100-wide-mode is an interactive and byte-compiled function defined in vt100.el.gz.

Signature

(vt100-wide-mode &optional ARG)

Documentation

Toggle 132/80 column mode for vt100s.

This is a global minor mode. If called interactively, toggle the Vt100-Wide 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 \=vt100-wide-mode)'.

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

Key Bindings

Source Code

;; Defined in /usr/src/emacs/lisp/term/vt100.el.gz
;;; Controlling the screen width.
(define-minor-mode vt100-wide-mode
  "Toggle 132/80 column mode for vt100s."
  :global t :init-value (= (frame-width) 132)
  :group 'terminals
  (send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
  (set-frame-width terminal-frame (if vt100-wide-mode 132 80)))