From: Drew Adams <drew.adams@oracle.com>
To: Michael Heerdegen <michael_heerdegen@web.de>,
Arash Esbati <arash@gnu.org>
Cc: Christopher Dimech <dimech@gmx.com>,
"eliz@gnu.org" <eliz@gnu.org>,
"monnier@iro.umontreal.ca" <monnier@iro.umontreal.ca>,
Help Gnu Emacs <help-gnu-emacs@gnu.org>,
"carlmarcos@tutanota.com" <carlmarcos@tutanota.com>
Subject: RE: [External] : Re: completing-read depricated initial-input
Date: Thu, 23 Jun 2022 16:30:01 +0000 [thread overview]
Message-ID: <SJ0PR10MB54886D571721D312F83D0865F3B59@SJ0PR10MB5488.namprd10.prod.outlook.com> (raw)
In-Reply-To: <87tu8bmnzf.fsf@web.de>
> > (let ((list '("iffalse" "iftrue" "else" "fi")))
> > (completing-read "Macro: "
> > (mapcar (lambda (x) (concat "\\" x)) list)
> > nil nil "\\"))
>
> A convincing example, in my opinion.
Yes, it's a typical use case for non-nil INIT
arg: inserting a prefix.
And it's also essentially the case for non-nil
`insert-default-directory' for `read-file-name'.
(Try setting `insert-default-directory' to nil,
and see if you like it. Now imagine if Emacs
hard-coded the behavior as nil and decided to
tell users that inserting `default-directory'
is deprecated...)
This case can arise if you use `try-completion'
to obtain such a common prefix, and then you use
`completing-read' to get the completion the user
wants.
Another example:
(completing-read "Color: " (defined-colors)
nil nil (buffer-substring-no-properties
(widget-field-start widget)
(point)))
___
Another typical use case is when the HIST arg is a
cons, so you can insert a particular history element
and position the cursor after it.
This case is what the doc string of `completing-read'
(misguidedly) says is the _only_ use case:
(This is the only case in which you should use
INITIAL-INPUT instead of DEF.)
(Our docs shouldn't use "should", BTW. ;-))
And it's not even necessarily a case of "instead
of DEF". Using INIT here doesn't exclude also
using a DEF value.
next prev parent reply other threads:[~2022-06-23 16:30 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-21 7:56 completing-read depricated initial-input carlmarcos--- via Users list for the GNU Emacs text editor
[not found] ` <N54Fw5q--3-2@tutanota.com-N54INof----2>
2022-06-21 9:51 ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-06-21 11:19 ` Michael Heerdegen
2022-06-21 12:39 ` Emanuel Berg
2022-06-21 12:46 ` Michael Heerdegen
2022-06-21 14:04 ` [External] : " Drew Adams
2022-06-21 14:10 ` Michael Heerdegen
2022-06-21 14:49 ` Drew Adams
2022-06-22 8:50 ` Jean Louis
2022-06-22 9:32 ` Emanuel Berg
2022-06-21 10:26 ` Robert Pluim
2022-06-21 11:15 ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-06-21 12:39 ` Christopher Dimech
2022-06-21 14:09 ` [External] : " Drew Adams
2022-06-21 18:21 ` Arash Esbati
2022-06-21 19:04 ` Emanuel Berg
2022-06-21 20:41 ` [External] : " Drew Adams
2022-06-21 21:28 ` Arash Esbati
2022-06-21 22:07 ` [External] : " Drew Adams
2022-06-21 22:56 ` Emanuel Berg
2022-06-22 13:43 ` Drew Adams
2022-06-22 15:59 ` standard libraries again (was: Re: [External] : Re: completing-read depricated initial-input) Emanuel Berg
2022-06-22 17:39 ` Drew Adams
2022-06-22 18:05 ` Emanuel Berg
2022-06-22 20:53 ` Drew Adams
2022-06-22 21:18 ` Emanuel Berg
2022-06-23 7:59 ` completing-read depricated initial-input Arash Esbati
2022-06-23 10:06 ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-06-23 20:57 ` Emanuel Berg
2022-06-23 11:19 ` Michael Heerdegen
2022-06-23 12:12 ` Arash Esbati
2022-06-23 14:52 ` Michael Heerdegen
2022-06-23 16:30 ` Drew Adams [this message]
2022-06-23 16:41 ` [External] : " Michael Heerdegen
2022-06-23 18:27 ` Christopher Dimech
2022-06-23 21:14 ` Emanuel Berg
2022-06-23 18:25 ` RE: [External] : " Christopher Dimech
2022-06-23 21:13 ` [External] : " Emanuel Berg
2022-06-23 21:07 ` Emanuel Berg
2022-06-23 21:06 ` Emanuel Berg
2022-06-23 14:36 ` Jean Louis
2022-06-24 2:35 ` Emanuel Berg
2022-06-24 6:59 ` Jean Louis
2022-06-23 15:19 ` Jean Louis
2022-06-23 15:24 ` Jean Louis
2022-06-23 21:05 ` Stefan Monnier
2022-06-23 22:10 ` Christopher Dimech
2022-06-23 22:19 ` Stefan Monnier
2022-06-23 22:28 ` Christopher Dimech
2022-06-24 7:08 ` Jean Louis
2022-06-24 8:19 ` Christopher Dimech
2022-06-24 11:00 ` Jean Louis
2022-06-24 16:58 ` Christopher Dimech
2022-06-24 8:19 ` Emanuel Berg
2022-06-24 11:31 ` Jean Louis
2022-06-25 18:54 ` Emanuel Berg
2022-06-25 19:51 ` Jean Louis
2022-06-26 17:36 ` Emanuel Berg
2022-06-24 14:30 ` [External] : " Drew Adams
2022-06-24 19:33 ` RE: [External] : " Christopher Dimech
2022-06-25 19:12 ` [External] : " Emanuel Berg
2022-06-25 21:26 ` Drew Adams
2022-06-26 17:39 ` Emanuel Berg
2022-06-26 22:22 ` Drew Adams
2022-06-26 22:42 ` Emanuel Berg
2022-06-24 0:10 ` Drew Adams
2022-06-24 8:09 ` RE: [External] : " Christopher Dimech
2022-06-24 2:29 ` Emanuel Berg
2022-06-23 16:23 ` [External] : " Drew Adams
2022-06-23 20:58 ` Arash Esbati
2022-06-23 21:54 ` Christopher Dimech
2022-06-24 2:49 ` Emanuel Berg
2022-06-22 3:09 ` Po Lu
2022-06-22 3:46 ` Emanuel Berg
2022-06-22 4:56 ` Christopher Dimech
2022-06-23 8:20 ` Arash Esbati
2022-06-23 8:27 ` Emanuel Berg
2022-06-23 8:57 ` Tassilo Horn
2022-06-23 10:10 ` Emanuel Berg
2022-06-23 11:26 ` Tassilo Horn
2022-06-23 11:48 ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-06-23 21:38 ` Emanuel Berg
2022-06-24 8:03 ` Christopher Dimech
2022-06-23 21:34 ` Emanuel Berg
2022-06-23 11:58 ` Arash Esbati
2022-06-23 12:10 ` Lars Ingebrigtsen
2022-06-23 14:26 ` Tassilo Horn
2022-06-23 14:46 ` Arash Esbati
2022-06-23 15:18 ` Robert Pluim
2022-06-23 20:46 ` Arash Esbati
2022-06-24 8:40 ` Philip Kaludercic
2022-06-24 2:22 ` Emanuel Berg
2022-06-24 2:17 ` Emanuel Berg
2022-06-23 21:49 ` Emanuel Berg
2022-06-23 21:42 ` Emanuel Berg
2022-06-23 16:25 ` [External] : " Drew Adams
2022-06-23 19:56 ` Tassilo Horn
2022-06-24 11:23 ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-06-24 11:36 ` Jean Louis
2022-06-25 19:01 ` Emanuel Berg
2022-06-25 21:26 ` Drew Adams
2022-06-22 2:59 ` RE: [External] : " Christopher Dimech
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