bug#21102: 24.5; prompt of `read-char' obscured by keystroke echo

bug#21102: 24.5; prompt of `read-char' obscured by keystroke echo

[Emilio Lopes]

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Start Emacs with "emacs -Q" and type the following in the "*scratch*"
buffer:

  (read-char "char: ")

With the point after the right paren type now "C-x C-e"
(`eval-last-sexp').  If you press this key-sequence slowly, waiting one
second (the value of `echo-keystrokes') between "C-x" and "C-e" the
prompt string ("char: ") will be obscured by the echo area showing the
keystrokes "C-x C-e-" (note the trailing dash!).

In GNU Emacs 24.5.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.14.5)
 of 2015-04-15 on xz
Windowing system distributor `The X.Org Foundation', version 11.0.11604000
System Description:    Debian GNU/Linux 8.1 (jessie)

Configured using:
 `configure --without-compress-install --with-zlib --with-imagemagick
 --with-xml2 --with-svg --prefix=/usr/local/stow/emacs-24.5'

Important settings:
  value of $LC_ALL: en_US.UTF-8
  value of $LC_CTYPE: en_US.UTF-8
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

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bug#21102: 24.5; prompt of `read-char' obscured by keystroke echo

[Stefan Kangas]

found 21102 28.0.50
tags 21102 + confirmed
severity 21102 minor
thanks

Emilio Lopes <eclig@gmx.net> writes:

> Start Emacs with "emacs -Q" and type the following in the "*scratch*" buffer:
>
>   (read-char "char: ")
>
> With the point after the right paren type now "C-x C-e"
> (`eval-last-sexp').  If you press this key-sequence slowly, waiting one
> second (the value of `echo-keystrokes') between "C-x" and "C-e" the
> prompt string ("char: ") will be obscured by the echo area showing the
> keystrokes "C-x C-e-" (note the trailing dash!).

I can reproduce this on current master.

Best regards,
Stefan Kangas

bug#21102: 24.5; prompt of `read-char' obscured by keystroke echo

[Drew Adams]

Good catch.

I just checked with releases on MS Windows.

This regression was introduced in Emacs 24.
The problem is present in 24.5, and it's absent in 23.4.

bug#21102: 24.5; prompt of `read-char' obscured by keystroke echo

[Lars Ingebrigtsen]

Stefan Kangas <stefan@marxist.se> writes:

>> Start Emacs with "emacs -Q" and type the following in the "*scratch*" buffer:
>>
>>   (read-char "char: ")
>>
>> With the point after the right paren type now "C-x C-e"
>> (`eval-last-sexp').  If you press this key-sequence slowly, waiting one
>> second (the value of `echo-keystrokes') between "C-x" and "C-e" the
>> prompt string ("char: ") will be obscured by the echo area showing the
>> keystrokes "C-x C-e-" (note the trailing dash!).
>
> I can reproduce this on current master.

(This was a year ago.)

I can reproduce this in Emacs 27.2, but not on the current master.  Has
this problem gone away for you too on the current master?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#21102: 24.5; prompt of `read-char' obscured by keystroke echo

[Stefan Kangas]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> I can reproduce this in Emacs 27.2, but not on the current master.  Has
> this problem gone away for you too on the current master?

I can also reproduce this on 27.2 but not on current master, so let's
assume this has been fixed.

I'm closing this bug with this message.  If anyone can still reproduce
this on current master, please reply back and we can re-open.