GNU bug report logs - #41087
27.0.91; How to remove Emacs 27 changes to minibuffer?

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Juri Linkov <juri <at> linkov.net>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#41087: closed (27.0.91; How to remove Emacs 27 changes to
 minibuffer?)
Date: Tue, 12 May 2020 23:00:03 +0000

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Your message dated Wed, 13 May 2020 01:50:22 +0300
with message-id <87tv0klsvt.fsf <at> mail.linkov.net>
and subject line Re: bug#41087: 27.0.91; How to remove Emacs 27 changes to minibuffer?
has caused the debbugs.gnu.org bug report #41087,
regarding 27.0.91; How to remove Emacs 27 changes to minibuffer?
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: Drew Adams <drew.adams <at> oracle.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.0.91; How to remove Emacs 27 changes to minibuffer?
Date: Mon, 4 May 2020 14:07:59 -0700 (PDT)

NEWS says this:

** Minibuffer

+++
*** A new user option, 'minibuffer-beginning-of-buffer-movement', has
been introduced to allow controlling how the 'M-<' command works in
the minibuffer.  If non-nil, point will move to the end of the prompt
(if point is after the end of the prompt).

+++
*** When the minibuffer is active, echo-area messages are displayed at
the end of the minibuffer instead of hiding the minibuffer by the echo
area display.  The new user option 'minibuffer-message-clear-timeout'
controls how messages displayed in this situation are removed from the
minibuffer.

---
*** Minibuffer now uses 'minibuffer-message' to display error messages
at the end of the active minibuffer.

+++
*** 'y-or-n-p' now uses the minibuffer to read 'y' or 'n' answer.

---
*** Some commands that previously used 'read-char-choice' now read
a character using the minibuffer by 'read-char-from-minibuffer'.


Emacs 27 is unfortunately _totally_ unusable for me.  Cannot do the
slightest thing.

I think that some of the problems come from the changes to minibuffer
and echo-area behavior.  Regardless of whether that is the case, I want
to undo those changes.  Is there an option for that? (I hope so.)  If
not, what changes do I need to make from Lisp, to get back the prior
behavior?



In GNU Emacs 27.0.91 (build 1, x86_64-w64-mingw32)
 of 2020-04-20
Repository revision: c36c5a3dedbb2e0349be1b6c3b7567ea7b594f1c
Windowing system distributor `Microsoft Corp.', version 10.0.18362
Configured using:
 `configure --without-dbus --host=x86_64-w64-mingw32
 --without-compress-install 'CFLAGS=-O2 -static''

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From: Juri Linkov <juri <at> linkov.net>
To: Drew Adams <drew.adams <at> oracle.com>
Cc: 41087-done <at> debbugs.gnu.org
Subject: Re: bug#41087: 27.0.91; How to remove Emacs 27 changes to minibuffer?
Date: Wed, 13 May 2020 01:50:22 +0300

> I do think the doc, and NEWS, could help by
> clearly saying how to revert the changes.  Maybe
> it does so sufficiently; I haven't studied it.

There are a lot of such preprocessing lines in your libraries

  (< emacs-major-version 23)
  (= emacs-major-version 24)

so you could add something like

  (>= emacs-major-version 27)

to handle changes in Emacs 27.

Since NEWS describes how to get back a previous behavior,
I'm closing this report.

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