Using digits and letters to select more company candidates by extending the `ora-company-number` function.

[hongyi-zhao]

The function ora-company-number enables to select and insert company candidates using digits without modifier. But it can only support 10 candidates, numbered 0-9. I want to extend this feature to support more candidates indexed/identified with a single digit or letter, e.g., 0-9, q, w, e, r, t, by setting:

(setq company-tooltip-limit 16
      company-quick-access-keys '("1" "2" "3" "4" "5" "6" "7" "8" "9" "0" "q" "w" "e" "r" "t" "y"))        

See the following screenshot for the effect. This way, I can select and insert more candidates conveniently.

How can the above code be improved to achieve this goal? Any hints will be greatly appreciated.

Regards,
HZ

[hongyi-zhao]

I came up with the following solution:

(use-package company
   :init
  (defun hz-company-search-toggle ()
    (interactive)
    (if company-search-mode
	(company-search-abort)
      (company-search-candidates)))
   :bind
   (:map company-active-map
	("<tab>" . hz-company-search-toggle)
	("<f1>" . company-search-repeat-forward)
	("<f2>" . company-search-repeat-backward)
	("SPC" . company-complete-selection)
	("<return>" . company-abort)

	:map company-search-map
	("<tab>" . hz-company-search-toggle)
	("<f1>" . company-search-repeat-forward)
	("<f2>" . company-search-repeat-backward)
	("SPC" . company-complete-selection)
	("<return>" . company-abort)
)

  :config
  (setq company-tooltip-limit 10)
 (defun hz-company-complete-number ()
    "Convert the company-quick-access-keys to the candidates' row NUMBER visible on the tooltip,
     and then feed it to `company-complete-number' to quickly select and insert company candidates.
     If the currently entered character is belongs to company-quick-access-keys and a part of the candidate simultaneously,
     append it to the currently entered string to construct new company-prefix."
    (interactive)
    (let* ((k (this-command-keys))
           (re (concat "^" company-prefix k)))

      (if (cl-find-if (lambda (s) (string-match re s))
                      company-candidates)
	  (self-insert-command 1)
	(company-complete-number
	 (cond
	  ((equal k "1") 1)
	  ((equal k "2") 2)
	  ((equal k "3") 3)
	  ((equal k "4") 4)
	  ((equal k "5") 5)
	  ((equal k "6") 6)
	  ((equal k "7") 7)
	  ((equal k "8") 8)
	  ((equal k "9") 9)
	  ((equal k "0") 10)
	  )
	 ))))

  (let ((c-a-map company-active-map)
	(c-s-map company-search-map))
    (mapc (lambda (x)
	    (define-key c-a-map (format "%s" x) #'hz-company-complete-number))
	  '(1 2 3 4 5 6 7 8 9 0))
    (mapc (lambda (x)
	    (define-key c-s-map (format "%s" x) #'hz-company-complete-number))
	  '(1 2 3 4 5 6 7 8 9 0)))
)

See here for the relevant discussion.