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From: Jean Louis <bugs@gnu.support>
To: Philip Kaludercic <philipk@posteo.net>
Cc: Daniel Mendler <mail@daniel-mendler.de>, emacs-devel@gnu.org
Subject: Re: Stepping Back: A Wealth Of Completion systems Re: [ELPA] New package: vertico
Date: Wed, 7 Apr 2021 22:47:57 +0300	[thread overview]
Message-ID: <YG4MbdC7GfpS3FNu@protected.localdomain> (raw)
In-Reply-To: <87o8eplxgt.fsf@posteo.net>

* Philip Kaludercic <philipk@posteo.net> [2021-04-07 22:14]:
> Daniel Mendler <mail@daniel-mendler.de> writes:
> 
> > On 4/7/21 6:20 PM, Philip Kaludercic wrote:
> >> Well that is because imenu presents the options in the minibuffer, and
> >> you have to go through the menu step-by-step. What I'm talking about is
> >> a direct hierarchical visualisation, that should be navigable with the
> >> intuitiveness of org-mode.
> >
> > This is a bit vague. If we have a tree structure one can have some
> > tree-like visualization (like the sidebar tree browsers) or have an 
> > outline like in org-mode. But how would you actually navigate quickly?
> > Using Avy-like keys? What if the structure does not fit on the screen 
> > easily, what if there are cycles, ...?
> 
> I'm still thinking about all of this, and have to find the time to
> implement a prototype. It might make sense to have a similar approach to
> completing-read, where a variable like completing-read-function can
> change everything.
> 
> A tree-like visualisation would probably make more sense, as long as it
> can be manipulated using the keyboard. I mentioned org-mode thinking of
> the org-cycle command, and how it allows you to hide and show
> subtrees.

When selecting items in tabulated-list-mode, all of them have the ID,
but some IDs have its type of being a Set or subtree. When subtree is
choosen a new frame appears with its nodes.

Similarly, completing-read could even now browse trees, it is matter
of recognizing which item belong to a tree to immediately offer
another completing-read with the nodes of the subtree. Subtrees cannot
be selected, but those nodes or candidates which are not subtrees they
can be selected.

I am using strings with IDs like "Selection candidate [123]" and that
is how I extract the ID of the item, then I can test for it if it is a
subtree or not and offer new completing read on that.

(defun string-cut-right-square-bracket-reference (s)
  "Returns the reference within square brackets on the end of S."
  (let* ((space (string-match " " (reverse s))))
    (if space
	(let* ((id (substring (reverse s) 0 space)))
	  (if (and (string-match "\\[" id)
		   (string-match "\\]" id))
	      (replace-regexp-in-string "\\[\\\|\\]" "" (reverse id))
	    nil))
      nil)))

(string-cut-right-square-bracket-reference "Selection candidate [123]") → "123"

(setq set '(10 20))
(setq collection-data '(("Candidate A" 10)
			("Candidate B" 11)
			("Candidate C" 20)
			("Candidate D" 12)
			("Candidate E" 13)
			("Candidate D" 14)))
(setq collection-verify collection-data)

(setq collection nil)

(while collection-data
  (let ((item (pop collection-data)))
    (push (format "%s [%s]" (car item) (cadr item)) collection)))

(completing-read "Choose item: " collection) → "Candidate A [10]"

Concept is here:

(defun completing-read-tree (prompt collection)
  (while (member (string-to-number
		  (string-cut-right-square-bracket-reference
		   (completing-read "Choose: " collection)))
		 set)
    (completing-read-tree prompt collection))) ;; at this point `collection'
					       ;; would be replaced
					       ;; with collection that
					       ;; belongs to
					       ;; particular set and
					       ;; browsing trees with
					       ;; completing read goes
					       ;; deeper and deeper. A
					       ;; key would be
					       ;; required to go back.


(completing-read-tree "Choose: " collection)

-- 
Jean

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  reply	other threads:[~2021-04-07 19:47 UTC|newest]

Thread overview: 178+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-05 10:22 [ELPA] New package: vertico Daniel Mendler
2021-04-05 14:27 ` Manuel Uberti
2021-04-05 18:30   ` Stepping Back: A Wealth Of Completion systems " T.V Raman
2021-04-05 20:49     ` Philip Kaludercic
2021-04-05 20:55       ` T.V Raman
2021-04-06  6:45       ` Arthur Miller
2021-04-06 15:15       ` Eric Abrahamsen
2021-04-06 15:56         ` Stefan Monnier
2021-04-07 12:09       ` Gregory Heytings
2021-04-07 12:23         ` Joost Kremers
2021-04-07 12:56           ` Daniel Mendler
2021-04-07 18:55           ` Jean Louis
2021-04-07 13:05         ` Yuri Khan
2021-04-07 13:45           ` Eli Zaretskii
2021-04-07 14:15         ` Philip Kaludercic
     [not found]           ` <87eefm5fzl.fsf@posteo.net>
     [not found]             ` <3ec7e2e58a106c77370d@heytings.org>
2021-04-07 14:33               ` Philip Kaludercic
2021-04-07 15:17           ` Daniel Mendler
2021-04-07 16:14             ` Stefan Monnier
2021-04-07 16:32               ` Daniel Mendler
2021-04-07 16:20             ` Philip Kaludercic
2021-04-07 16:57               ` Daniel Mendler
2021-04-07 18:19                 ` [External] : " Drew Adams
2021-04-07 19:13                 ` Philip Kaludercic
2021-04-07 19:47                   ` Jean Louis [this message]
2021-04-07 20:03                   ` Daniel Mendler
2021-04-07 22:31                     ` Philip Kaludercic
2021-04-09  6:21                     ` Tassilo Horn
2021-04-09  8:53                       ` Daniel Mendler
2021-04-09 17:22                         ` [External] : " Drew Adams
2021-04-09 18:51                         ` Tassilo Horn
2021-04-07 23:07                   ` [External] : " Drew Adams
2021-04-07 19:24                 ` Jean Louis
2021-04-07 18:19               ` [External] : " Drew Adams
2021-04-07 18:13             ` Drew Adams
2021-04-07 15:24           ` Gregory Heytings
2021-04-07 16:10             ` Philip Kaludercic
2021-04-07 16:49               ` Gregory Heytings
2021-04-07 17:40                 ` Philip Kaludercic
2021-04-07 17:48                   ` Gregory Heytings
2021-04-07 19:22                     ` Philip Kaludercic
2021-04-07 19:03           ` Jean Louis
2021-04-07 14:31         ` T.V Raman
2021-04-07 16:02         ` Eric Abrahamsen
2021-04-07 18:18           ` [External] : " Drew Adams
2021-04-09  6:40           ` Thierry Volpiatto
2021-04-10  4:20             ` Eric Abrahamsen
2021-04-07 18:49         ` Jean Louis
2021-04-07 20:33           ` Juri Linkov
2021-04-09 11:12             ` Jean Louis
2021-04-07 13:01       ` Dmitry Gutov
2021-04-07 14:44         ` Stefan Monnier
2021-04-07 14:55           ` Philip Kaludercic
2021-04-07 21:56           ` Dmitry Gutov
2021-04-07 22:59             ` Philip Kaludercic
2021-04-08  0:48               ` Dmitry Gutov
2021-04-08 14:44                 ` Philip Kaludercic
2021-04-08 16:40                   ` T.V Raman
2021-04-08 17:53                     ` Philip Kaludercic
2021-04-08 17:57                       ` T.V Raman
2021-04-08 17:21                   ` [External] : " Drew Adams
2021-04-08 18:03                     ` Philip Kaludercic
2021-04-08 18:59                   ` Dmitry Gutov
2021-04-09  4:21                     ` Eric Abrahamsen
2021-04-09 23:18                       ` Dmitry Gutov
2021-04-10  4:31                         ` Eric Abrahamsen
2021-04-09  5:56                     ` Eli Zaretskii
2021-04-09 23:12                       ` Dmitry Gutov
2021-04-09 23:48                         ` Stefan Monnier
2021-04-10  1:56                           ` Dmitry Gutov
2021-04-10  4:04                             ` Stefan Monnier
2021-04-10 13:11                               ` Dmitry Gutov
2021-04-11 21:48                                 ` Stefan Monnier
2021-04-11 22:07                                   ` [External] : " Drew Adams
2021-04-11 22:10                                     ` Drew Adams
2021-04-11 21:52                                 ` Philip Kaludercic
2021-04-11 22:24                                   ` Dmitry Gutov
2021-04-12  1:32                                     ` Stefan Monnier
2021-04-12  4:16                                       ` [External] : " Drew Adams
2021-04-14  0:04                                       ` Dmitry Gutov
2021-04-10  7:27                             ` Eli Zaretskii
2021-04-10 10:53                               ` Dmitry Gutov
2021-04-10 11:09                                 ` Eli Zaretskii
2021-04-10  7:20                           ` Eli Zaretskii
2021-04-10 10:52                             ` Dmitry Gutov
2021-04-10 11:08                               ` Eli Zaretskii
2021-04-10 12:43                                 ` Dmitry Gutov
2021-04-10 13:10                                   ` Eli Zaretskii
2021-04-10 14:26                                     ` Dmitry Gutov
2021-04-10 10:56                             ` Stefan Kangas
2021-04-10 11:11                               ` Eli Zaretskii
2021-04-11 11:37                                 ` Stefan Kangas
2021-04-11 12:24                                   ` Philip Kaludercic
2021-04-11 12:58                                     ` Stefan Kangas
2021-04-11 13:42                                       ` Eli Zaretskii
2021-04-11 13:39                                     ` Eli Zaretskii
2021-04-11 17:16                                       ` Dmitry Gutov
2021-04-11 18:19                                         ` Eli Zaretskii
2021-04-11 18:36                                           ` [External] : " Drew Adams
2021-04-11 21:14                                           ` Dmitry Gutov
2021-04-11 13:37                                   ` Eli Zaretskii
2021-04-11 15:32                                     ` Stefan Kangas
2021-04-11 15:50                                       ` Eli Zaretskii
2021-04-11 15:55                                         ` Lars Ingebrigtsen
2021-04-11 16:49                                           ` Eli Zaretskii
2021-04-10 14:14                               ` [External] : " Drew Adams
2021-04-10 13:13                             ` Stefan Monnier
2021-04-10 14:00                               ` Eli Zaretskii
2021-04-10 11:11                           ` Gregory Heytings
2021-04-10 13:15                             ` Stefan Monnier
2021-04-10 13:40                               ` Gregory Heytings
2021-04-11 21:52                                 ` Stefan Monnier
2021-04-10  7:09                         ` Eli Zaretskii
2021-04-10 14:40                           ` Dmitry Gutov
2021-04-10 15:02                             ` Eli Zaretskii
2021-04-11  0:04                               ` Dmitry Gutov
2021-04-11  7:20                                 ` Eli Zaretskii
2021-04-10 14:40       ` Philip Kaludercic
2021-04-11  0:18         ` Dmitry Gutov
2021-04-11 11:18           ` Philip Kaludercic
2021-04-11 13:31             ` Jean Louis
2021-04-11 15:53               ` Philip Kaludercic
2021-04-12  9:24                 ` Jean Louis
2021-04-12 10:14                   ` Philip Kaludercic
2021-04-12 10:56                     ` Jean Louis
2021-04-12 11:30                       ` Philip Kaludercic
2021-04-12 16:28                     ` Eric Abrahamsen
2021-04-12 18:36                       ` [External] : " Drew Adams
2021-04-12 19:01                         ` Eric Abrahamsen
2021-04-12 19:21                           ` Drew Adams
2021-04-12 23:39                             ` Eric Abrahamsen
2021-04-13  2:06                               ` Drew Adams
2021-04-11 13:34             ` Eli Zaretskii
2021-04-11 16:14               ` Philip Kaludercic
2021-04-11 16:53                 ` Eli Zaretskii
2021-04-11 17:39                   ` Philip Kaludercic
2021-04-11 18:23                     ` Eli Zaretskii
2021-04-12 13:59         ` Stefan Monnier
2021-04-13 23:57           ` Dmitry Gutov
2021-04-21  9:20         ` Philip Kaludercic
2021-04-21  9:29           ` Eli Zaretskii
2021-04-21 10:27             ` Philip Kaludercic
2021-04-21 12:00               ` Eli Zaretskii
2021-04-21 12:50                 ` Philip Kaludercic
2021-04-21 13:02                   ` Eli Zaretskii
2021-04-21 14:25                     ` Jean Louis
2021-04-21 15:43                     ` Yuri Khan
2021-04-21 17:29                       ` Eli Zaretskii
2021-04-21 19:22                         ` Stefan Monnier
2021-04-21 19:25                           ` Eli Zaretskii
2021-04-21 19:35                             ` Stefan Monnier
2021-04-21 14:13                   ` Jean Louis
2021-04-21 14:35                   ` Stefan Monnier
2021-04-21 20:31                     ` [External] : " Drew Adams
2021-04-21 13:14           ` Daniel Mendler
2021-04-21 14:21             ` Philip Kaludercic
2021-04-05 14:59 ` Stefan Monnier
2021-04-05 15:32 ` Stefan Kangas
2021-04-05 17:55   ` Daniel Mendler
2021-04-05 18:10     ` Stefan Kangas
2021-04-09 21:37 ` Tassilo Horn
2021-04-09 23:23   ` Daniel Mendler
2021-04-10  7:17     ` Tassilo Horn
2021-04-10  9:33       ` Daniel Mendler
2021-04-10  9:44         ` Tassilo Horn
2021-04-10 10:07           ` Daniel Mendler
2021-04-10 13:34         ` Stefan Monnier
2021-04-10 14:07           ` Daniel Mendler
2021-04-10 15:19             ` Stefan Monnier
2021-04-10 17:27               ` Tassilo Horn
2021-04-10 20:58             ` Juri Linkov
2021-04-10  7:18     ` Eli Zaretskii
2021-04-10  9:21       ` Daniel Mendler
2021-04-10  9:30         ` Eli Zaretskii
2021-04-10  9:38           ` Daniel Mendler
2021-04-10 10:00             ` Eli Zaretskii
2021-04-10 10:14               ` Daniel Mendler
2021-04-10  9:38           ` Tassilo Horn
2021-04-10 10:02             ` Eli Zaretskii

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