From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Tim Landscheidt <tim@tim-landscheidt.de>
Cc: Michael Heerdegen <michael_heerdegen@web.de>, emacs-devel@gnu.org
Subject: Re: Doc of deprecated INITIAL-INPUT arg of completing-read
Date: Thu, 15 Feb 2024 13:39:52 -0500 [thread overview]
Message-ID: <jwvjzn58tym.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87sf1u5e9c.fsf@vagabond.tim-landscheidt.de> (Tim Landscheidt's message of "Thu, 15 Feb 2024 08:21:35 +0000")
> The docstring for completing-read (GNU Emacs 28.3) says re-
> garding INITIAL-INPUT:
>
> | If INITIAL-INPUT is non-nil, insert it in the minibuffer initially,
> | with point positioned at the end. If it is (STRING . POSITION), the
> | initial input is STRING, but point is placed at _zero-indexed_
> | position POSITION in STRING. (*Note* that this is different from
> | ‘read-from-minibuffer’ and related functions, which use one-indexing
> | for POSITION.) This feature is deprecated--it is best to pass nil
> | for INITIAL-INPUT and supply the default value DEF instead. The
> | user can yank the default value into the minibuffer easily using
> | M-n.
>
> If one follows this recommendation (setting INITIAL-INPUT to
> nil and passing the original value as DEF), the user is not
> made aware of the original INITIAL-INPUT value until he
> presses M-n.
Oh, you mean we should add that the default should be passed to
`format-prompt`? I guess that would help, indeed.
Of course, even better would be to call `format-prompt` automatically.
I just don't know how to do that conveniently without
breaking compatibility.
Maybe something like
(unless (memq (aref prompt (- (length prompt) 1)) '(?: ?? ?\s))
(setq prompt (format-prompt prompt default)))
?
> For example, when I use M-x compile RET, I typically do not
> want to enter a different value, but amend the existing one
> by adding/changing the target or setting an option.
I suspect this depends on the user.
> But even in the basic case of C-x C-f, if I want to find a file
> upwards of default-directory, the two extra keystrokes harmonize
> well with wanting to do something different, so it never occured to me
> that Emacs should protect me from them.
🙂
FWIW, it's almost never necessary in `C-x C-f` since you can type `../`
to "go up", `~/` to go home, and you don't need to type anything at all to
go back to the root.
Stefan
next prev parent reply other threads:[~2024-02-15 18:39 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-27 15:22 Doc of deprecated INITIAL-INPUT arg of completing-read Michael Heerdegen
2022-06-27 16:33 ` [External] : " Drew Adams
2022-06-27 17:22 ` Christopher Dimech
2022-06-28 16:19 ` Michael Heerdegen
2022-06-28 16:40 ` Drew Adams
2022-06-29 13:42 ` Michael Heerdegen
2022-06-29 14:24 ` Drew Adams
2022-06-28 21:46 ` Christopher Dimech
2022-06-29 9:15 ` Arash Esbati
2022-06-29 13:46 ` Michael Heerdegen
2022-06-30 9:10 ` Arash Esbati
2022-07-04 12:25 ` Michael Heerdegen
2022-06-28 19:17 ` [External] : " Jean Louis
2022-06-28 19:15 ` Jean Louis
2022-06-28 21:10 ` Stefan Monnier
2022-06-28 22:00 ` Jean Louis
2022-06-29 2:58 ` Stefan Monnier
2022-06-30 3:08 ` Richard Stallman
2022-06-30 14:28 ` Stefan Monnier
2024-02-13 14:43 ` Tim Landscheidt
2024-02-13 14:59 ` Stefan Monnier
2024-02-13 17:07 ` Tim Landscheidt
2024-02-13 20:09 ` Stefan Monnier
2024-02-15 8:21 ` Tim Landscheidt
2024-02-15 16:09 ` [External] : " Drew Adams
2024-02-15 18:39 ` Stefan Monnier [this message]
2024-02-17 17:12 ` Tim Landscheidt
2024-02-17 17:41 ` Stefan Monnier
2022-06-30 3:08 ` Richard Stallman
2022-07-01 5:54 ` Jean Louis
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