Re: feature/icomplete-vertical

[Ergus]

On Sat, Sep 12, 2020 at 01:10:57PM +0000, Gregory Heytings wrote:
> > > If there was a built-in vertical mode it would be better / more 
> > > intuitive.
> >
> > Could you try the branch feature/icomplete-vertical? I need some 
> > testers before adding it to master.
>
> Alas no, I have been using the following to have icomplete-vertical 
> for quite some time, it works perfectly well, so I don't see why a 
> more complex implementation would be necessary.
>
> (setq icomplete-prospects-height 6)
> (setq icomplete-separator "\n")
> (defun icomplete-vertical-minibuffer-setup ()
>  (setq truncate-lines t)
>  (setq-local completion-ignore-case t)
>  (setq-local read-file-name-completion-ignore-case t)
>  (setq-local read-buffer-completion-ignore-case t)
>  (setq icomplete-hide-common-prefix nil))
> (add-hook 'icomplete-minibuffer-setup-hook 
> #'icomplete-vertical-minibuffer-setup)
> (defun icomplete-vertical-reformat-completions (completions)
>  (save-match-data
>    (let ((cnp (substring-no-properties completions)))
>      (if (string-match "^\\((.*)\\|\\[.+\\]\\)?{\\(\\(?:.\\|\n\\)+\\)}" cnp)
>          (format "%s \n%s"
>                  (or (match-string 1 cnp) "")
>                  (replace-regexp-in-string "^" (make-string (current-column) ? 
> ) (match-string 2 cnp)))
>        cnp))))
> (defun icomplete-vertical-adjust-minibuffer-height (completions)
>  (let* ((comp (icomplete-vertical-reformat-completions completions))
>         (complen (length (split-string comp "\n"))))
>    (if (> complen 1) (enlarge-window (- icomplete-prospects-height (1- 
> (window-height)))))
>    comp))
> (advice-add 'icomplete-completions :filter-return 
> #'icomplete-vertical-adjust-minibuffer-height)

1) Internal functionalities try not to use advises.
2) The branch is not actually more complex, it just generates the
formatted vertical output form the beginning.
3) It does more or less the same you are doing but with a simpler
config:

(icomplete-mode t)
(icomplete-format 'vertical)

4) We add arrow bindings to move
5) Add completion matching faces is also coming.