From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: Thien-Thi Nguyen <ttn@gnuvola.org>
Cc: emacs-devel@gnu.org
Subject: Re: menu system in recent Emacs?
Date: Wed, 02 May 2012 21:47:58 -0400 [thread overview]
Message-ID: <jwv1un2vy8t.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <871un2m5j8.fsf@gnuvola.org> (Thien-Thi Nguyen's message of "Thu, 03 May 2012 03:12:27 +0200")
> I would really like it to show the list of choices immediately,
> as if the user pressed `TAB'. Can that be fed into the
> function somehow as a synthetic keypress?
> That would be:
> (progn
> (push ?\t unread-command-events)
> (completing-read
> "Here are some choices:\n- A\t- B\n- C\t- D\nChoose one: "
Note: this will only work when the minibuffer can grow to have
enough lines. E.g. my minibuffer-only frame would display this prompt
in a way that's rather incomprehensible.
> (progn
> (push ?\t unread-command-events)
> (completing-read
> "CHOICE EXPLANATION\nChoose one: "
> '("A" "B" "C" "D")))
That's pretty ugly.
I recommend something more like
(minibuffer-with-setup-hook #'minibuffer-completion-help
(completing-read ...))
As for the explanation, you could add an `annotation-function' metadata
to the completion-table. Something like
(let ((table (lambda (string pred action)
(if (eq action 'metadata)
`(metadata (annotation-function
. ,(lambda (s)
(cond
((equal s "A") " explanation a")
((equal s "B") " explanation b")
((equal s "C") " explanation c")
((equal s "D") " explanation d")))))
(complete-with-action action '("A" "B" "C" "D")
string pred)))))
(minibuffer-with-setup-hook #'minibuffer-completion-help
(completing-read "prompt:" table)))
-- Stefan
next prev parent reply other threads:[~2012-05-03 1:47 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-28 0:45 auth-source change default spec Tim Cross
2012-04-28 8:46 ` Tim Cross
2012-04-28 15:08 ` Stefan Monnier
2012-04-29 0:04 ` Tim Cross
2012-04-30 12:23 ` Ted Zlatanov
2012-04-30 12:51 ` Richard Riley
2012-04-30 22:41 ` Tim Cross
2012-05-01 14:00 ` Ted Zlatanov
2012-05-01 21:41 ` Tim Cross
2012-05-02 12:25 ` Ted Zlatanov
2012-05-02 13:59 ` menu system in recent Emacs? (was: auth-source change default spec) Ted Zlatanov
2012-05-02 14:37 ` menu system in recent Emacs? Davis Herring
2012-05-02 15:07 ` Ted Zlatanov
2012-05-02 18:52 ` Tassilo Horn
2012-05-02 19:35 ` Ted Zlatanov
2012-05-02 18:00 ` Eric Schulte
2012-05-02 21:34 ` Ted Zlatanov
2012-05-02 23:52 ` Thien-Thi Nguyen
2012-05-03 0:53 ` Ted Zlatanov
2012-05-03 1:12 ` Thien-Thi Nguyen
2012-05-03 1:44 ` Ted Zlatanov
2012-05-03 1:47 ` Stefan Monnier [this message]
2012-05-03 5:21 ` Thierry Volpiatto
2012-05-03 6:25 ` Thierry Volpiatto
2012-05-03 7:13 ` Thien-Thi Nguyen
2012-05-03 7:28 ` Thierry Volpiatto
2012-05-03 6:18 ` Stefan Reichör
2012-05-03 12:01 ` Ted Zlatanov
2012-05-03 4:09 ` auth-source change default spec Tim Cross
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