The Latest in Emacs Completions

• There is an (official?) build of Emacs 29 for Android 🤯

  https://f-droid.org/packages/org.gnu.emacs/ https://git.savannah.gnu.org/cgit/emacs.git/log/?h=feature/android

  Also try Orgro: https://f-droid.org/en/packages/com.madlonkay.orgro/

• Should I attempt a real sequel to the original Emacs From Scratch, live streamed?

Today we’re going to experiment with the latest advancements in Emacs completion / selection systems, including a look at improvements that are coming in Emacs 29!

Let me know if I’m missing anything! I’m not fully up to date on all the changes!

Let’s start by consulting a couple of sources:

• The Emacs 29 NEWS file (press C-h n)!
• Mohamed Suliman’s blog post about Emacs 29 improvements

Things to try:

• icomplete-vertical-mode
• fido-mode / fido-vertical-mode

(defun basic-completion-style ()
  (setq completion-auto-wrap t
        completion-auto-select 'second-tab
        completion-auto-help 'always
        completion-show-help nil
        completions-format 'one-column
        completions-max-height 10))

(defun icomplete-vertical-style ()
  (setq completion-auto-wrap t
        completion-auto-help nil
        completions-max-height 15
        completion-styles '(initials flex)
        icomplete-in-buffer t
        max-mini-window-height 10)

  (icomplete-mode 1)
  (icomplete-vertical-mode 1))

(defun fido-style ()
  (setq completion-auto-wrap t
        completion-auto-help nil
        completions-max-height 15
        completion-styles '(flex)
        icomplete-in-buffer t
        max-mini-window-height 10)

  (fido-mode 1)
  (fido-vertical-mode 1))

;; Bind C-r to show minibuffer history entries
(keymap-set minibuffer-mode-map "C-r" #'minibuffer-complete-history)

Vertico 1.0

(vertico-mode 1)
(marginalia-mode 1)

(require 'orderless)
(setq completion-styles '(orderless basic)
      completion-category-overrides '((file (styles basic partial-completion))))

(require 'vertico-quick)
(keymap-set vertico-map "M-q" #'vertico-quick-insert)
(keymap-set vertico-map "C-q" #'vertico-quick-exit)

(global-set-key "\M-R" #'vertico-repeat)
(add-hook 'minibuffer-setup-hook #'vertico-repeat-save)

(keymap-set vertico-map "DEL" #'vertico-directory-delete-char)
(keymap-set vertico-map "M-DEL" #'vertico-directory-delete-word)

(vertico-mouse-mode 1)

(require 'vertico-posframe)
(vertico-posframe-mode 1)