From: Dmitry Gutov<dgutov@yandex.ru>
Date: Tue, 10 Dec 2019 16:14:19 +0200
I have a configuration that takes 1-2 seconds to boot up.
In previous versions (including the latest Emacs 26) it was rarely a
problem because I could always start typing while the configuration
finishes loading (e.g. C-x C-f first-chars-of-file-name).
Emacs 27, however, ignores most of the keystrokes, so when I do that, by
habit, I simply end up in the Scratch buffer with some of the last
characters. E.g. "ile-name" in this example.
There was some recent change related to discard-input, no? Here:
commit 54c792ece6c20297571aa68c613075c8a8152bcc
Author: Juri Linkov<juri@linkov.net>
AuthorDate: Sat Nov 30 23:33:41 2019 +0200
Commit: Juri Linkov<juri@linkov.net>
CommitDate: Sat Nov 30 23:33:41 2019 +0200
* lisp/subr.el: Add discard-input to more functions.
* lisp/subr.el (read-char-from-minibuffer-insert-other)
(y-or-n-p-insert-other): Use discard-input in case of user mistake.
(do-after-load-evaluation): Add discard-input before calling 'message',
so in case of the active minibuffer, calling minibuffer-message will
allow
sit-for to wait the complete timeout, because discard-input will discard
all initial events that prevent sit-for from waiting during startup.
https://lists.gnu.org/archive/html/emacs-devel/2019-11/msg00581.html