From: John Mastro <john.b.mastro@gmail.com>
To: Help Gnu Emacs mailing list <help-gnu-emacs@gnu.org>
Cc: Oleh Krehel <ohwoeowho@gmail.com>, Kaushal Modi <kaushal.modi@gmail.com>
Subject: Re: Any infrastructure to select one of a few options in Emacs core?
Date: Fri, 20 May 2016 16:52:30 -0700 [thread overview]
Message-ID: <CAOj2CQS827bMSiiMLGce8mVH-Mg3Vs=85vr0_VdiHbbvxmu8Lw@mail.gmail.com> (raw)
In-Reply-To: <CAOj2CQTpTF_roGwj+xv46=EF+4UG0NedQsdsGyHJ3M_zytZZ5A@mail.gmail.com>
John Mastro <john.b.mastro@gmail.com> wrote:
> I played around with a few cosmetic changes to your function and ended
> up with this:
I realized that, for my use case, it makes more sense to let the caller
specify the characters rather than automatically using the digits 1-9.
So I ended up with this instead, which is also a bit shorter and
simpler.
(defun read-choice (prompt choices)
(let ((cursor-in-echo-area t)
(prompt (if (get-text-property 0 'face prompt)
prompt
(propertize prompt
'face
'minibuffer-prompt))))
(save-window-excursion
(pop-to-buffer " *Read choice*" t t)
(setq-local cursor-type nil)
(erase-buffer)
(pcase-dolist (`(,char ,description) choices)
(insert (propertize (string char)
'face
'font-lock-variable-name-face)
(format " %s\n" description)))
(goto-char (point-min))
(fit-window-to-buffer)
(or (assoc (read-key prompt) choices)
(user-error "Invalid selection")))))
In Emacs's master branch (but not the emacs-25 release branch) there's a
new function `read-multiple-choice' that's similar in purpose and worth
a look.
John
next prev parent reply other threads:[~2016-05-20 23:52 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-09 10:09 Any infrastructure to select one of a few options in Emacs core? Marcin Borkowski
2016-05-09 14:13 ` Drew Adams
2016-05-09 15:40 ` Marcin Borkowski
2016-05-09 16:37 ` Kaushal Modi
2016-05-09 17:10 ` Marcin Borkowski
2016-05-09 17:27 ` Drew Adams
2016-05-09 18:08 ` Marcin Borkowski
2016-05-09 18:16 ` Drew Adams
2016-05-19 20:06 ` Marcin Borkowski
2016-05-20 1:16 ` John Mastro
2016-05-20 23:52 ` John Mastro [this message]
2016-05-21 20:48 ` Marcin Borkowski
2016-05-09 18:36 ` Pascal J. Bourguignon
2016-05-14 4:20 ` Emanuel Berg
2016-05-21 20:49 ` Marcin Borkowski
2016-05-14 4:18 ` Emanuel Berg
2016-05-21 20:52 ` Marcin Borkowski
[not found] ` <mailman.43.1463863961.1216.help-gnu-emacs@gnu.org>
2016-05-22 6:32 ` Emanuel Berg
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