Re: Using digits and letters to select company-mode candidates.

[Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>]

Hongyi Zhao wrote:

> (define-key map (kbd "<return>") nil))

I've heard one should put keys to #'ignore if one wants them
to do nothing, is that what you want here?

> The above code enables to select and insert company-mode
> 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 bumbered with a single
> digit or letter, e.g., 0-9, q, w, e, r, t, y

Hm ... maybe something like this?

(defun letter-to-pos (l)
  (let ((fst ?a))
    (when (>= l fst)
      (+ 10 (- l fst) ))))

;; (letter-to-pos ?a) ; 10
;; (letter-to-pos ?b) ; 11
;;                ..  ; ..
;; (letter-to-pos ?z) ; 35

Or this?

(require 'cl-lib)

(defun letter-to-index (l &optional offset)
  (let*((letters (list ?q ?w ?e ?r ?t ?y))
        (pos     (cl-position l letters))
        (offs    (or offset 10)) )
    (when pos
      (+ offs pos) )))

;; (letter-to-index ?a) ; nil
;; (letter-to-index ?q) ; 10
;; (letter-to-index ?w) ; 11
;; (letter-to-index ?e) ; 12
;; (letter-to-index ?r) ; 13
;; (letter-to-index ?t) ; 14
;; (letter-to-index ?y) ; 15
;; (letter-to-index ?u) ; nil

HIH

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