From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Heime <heimeborgia@protonmail.com>
Cc: Eli Zaretskii <eliz@gnu.org>, 65459@debbugs.gnu.org
Subject: bug#65459: completing-read INITIAL-VALUE unaware of COLLECTION and REQUIRE-MATCH
Date: Wed, 23 Aug 2023 12:05:35 -0400 [thread overview]
Message-ID: <jwv4jkpoj61.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <WGPneIBtyarvwY_U4xDeNuwtGXJIGuLxxvX2PFDeFHH01k8NRYg0fuQIEcrnkmGagCNWILPuTDtbh3tc1bqkp5DKdTEPolnkb_AgdJNfVa8=@protonmail.com> (Heime's message of "Wed, 23 Aug 2023 15:29:53 +0000")
> Then, repeatedly hit <down>. You get
>
> alpha alpha beta gamma delta epsilon zeta eta alpha beta gamma and-so-on
Ah, OK, yes, that sounds like a problem (one I've heard before).
I think it's a problem in the cycling code rather than in INITIAL-VALUE
or COLLECTION. E.g. the same problem occurs if the initial input is
empty and the user types `alpha C-n`.
> You do actually get that the consecutive entries appearing in the
> minibuffer have direct correspondence to to order found in COLLECTION.
For that form of cycling, apparently so, yes. I don't categorize it as
"completion" so I haven't looked very closely at that code :-)
There are other ways to do cycling which use a different ordering.
The cycling through completions via `next-line-or-history-element` is
not very configurable, AFAICT.
> Once INITIAL is inserted, I cannot instruct completing-read to continue
> sequentially starting from a particular element.
Indeed.
> For instance, I cannot get the following result when using simple cycling
> through collection options when repeatedly hitting the <down> key.
>
> To achieve
>
> alpha epsilon zeta eta alpha beta gamma delta epsilon and-so-on
Could you give a bit more context about why/where you'd want to do that
so I can better imagine how to attack the problem?
Hopefully it would explain why you want "alpha epsilon ..." first but
"alpha beta .." later. Also for such uses of `completing-read` we
usually recommend against a non-nil value for INITIAL-INPUT, so that
context should try to explain why you use "alpha" as INITIAL-INPUT.
Stefan
next prev parent reply other threads:[~2023-08-23 16:05 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-22 22:04 bug#65459: completing-read INITIAL-VALUE unaware of COLLECTION and REQUIRE-MATCH Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-23 11:29 ` Eli Zaretskii
2023-08-23 11:57 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-23 13:07 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-23 15:29 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-23 16:05 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2023-08-23 16:39 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-23 16:58 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-23 18:12 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-23 21:27 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-23 22:44 ` Drew Adams
2023-08-23 23:06 ` Gregory Heytings
2023-08-24 2:30 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-24 12:30 ` Gregory Heytings
2023-08-24 13:19 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-25 6:59 ` Juri Linkov
2023-08-24 13:46 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-26 8:06 ` Gregory Heytings
2023-08-31 9:42 ` Eli Zaretskii
2023-09-04 21:35 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-04 22:16 ` Stefan Kangas
2023-09-05 11:05 ` Eli Zaretskii
2023-09-05 12:59 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-05 13:14 ` Eli Zaretskii
2023-08-24 9:02 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-24 13:36 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-24 14:51 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-24 16:45 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-24 18:50 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-24 19:35 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-24 20:22 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-24 21:02 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-24 21:45 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-26 8:10 ` Gregory Heytings
2023-08-26 14:27 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 6:45 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 14:40 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 16:21 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 16:26 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 16:35 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 18:01 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 21:11 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 21:48 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 22:59 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-28 3:12 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-28 9:14 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-28 12:44 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-28 12:50 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-28 13:04 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-28 13:13 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 16:42 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 18:02 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 20:54 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-27 21:26 ` Heime via Bug reports for GNU Emacs, the Swiss army knife of text editors
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