Emacs: Ido Mode
ido-mode enhanced emacs switch buffer command and opening file command.
It AUTOMATICALLY show list of choices as you type (no need to press Tab first).
ido-mode to toggle it on/off.
ido-switch-buffer 【Ctrl+x b】 to switch buffer.
ido-find-file 【Ctrl+x Ctrl+f】 to open file.
ido-switch-buffer is called, it will prompt for a choice of buffer name.
Here's the most useful ido keys when in the prompt:
- 【→】 → Select the next choice.
- 【←】 → Select the previous choice.
- 【↑】 → Go to the buffer you switched to last time. 【↓】 for next.
- 【Enter】 → Use the first choice.
- 【Ctrl+f】 → stop suggestion. useful for creating new file. 【Ctrl+b】 to go back to buffer selection mode.
- 【Ctrl+d】 → switch to open directory mode.
- 【Ctrl+g】 → cancel.
How to create a new file with ido-mode?
ido-switch-buffer, then press 【Ctrl+f】 to stop suggestion. This is useful when creating new file.
When you want to open a directory, press 【Ctrl+d】.
Ido Mode Setup
You can setup ido mode to display choices vertically, and turn on flex match.
Put this in your emacs init file:
(progn ;; make buffer switch command do suggestions, also for find-file command (require 'ido) (ido-mode 1) ;; show choices vertically (if (version< emacs-version "25") (progn (make-local-variable 'ido-separator) (setq ido-separator "\n")) (progn (make-local-variable 'ido-decorations) (setf (nth 2 ido-decorations) "\n"))) ;; show any name that has the chars you typed (setq ido-enable-flex-matching t) ;; use current pane for newly opened file (setq ido-default-file-method 'selected-window) ;; use current pane for newly switched buffer (setq ido-default-buffer-method 'selected-window) ;; stop ido from suggesting when naming new file (define-key (cdr ido-minor-mode-map-entry) [remap write-file] nil))
;; big minibuffer height, for ido to show choices vertically (setq max-mini-window-height 0.5)
Stop ido Suggestion When Writing File
When you call
write-file 【Ctrl+x Ctrl+w】
(aka “save as”), when ido is on, it'll make suggestions.
This is annoying because usually you don't want the name to be a existing file.
Here's how to stop ido suggestion when Alt+x
write-file, put this in emacs init:
(require 'ido) ;; stop ido suggestion when doing a save-as (define-key (cdr ido-minor-mode-map-entry) [remap write-file] nil)
See also: Emacs: icomplete vs ido mode
History of Ido Mode
ido is written by Kim F Storm. Ido started in 1996. Kim is also author of
cua-mode. (cua started in 1997) Kim's home page is
Ido became part of emacs 22 (released in 2007).