Bug#923051: marked as done (screen doesn't clear the screen for certain UTF8 characters)

[Debian Bug Tracking System]

Your message dated Wed, 20 May 2026 09:31:53 +0200
with message-id <281d4a394f1e02498e67234a85968...@realmtech.net>
and subject line Resolved in 5.0.1-1
has caused the Debian Bug report #923051,
regarding screen doesn't clear the screen for certain UTF8 characters
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
923051: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=923051
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems

--- Begin Message ---

Package: screen
Version: 4.5.0-6
Severity: normal
Tags: l10n

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?

Jessie did not display emoji UTF8 characters properly in the mutt built-in 
pager, so I retested with Jessie.

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

I emailed myself three lines of text: one containing ASCII, one Latin-1 UTF8, 
and one emoji UTF8.
I then viewed the email with the mutt built-in pager.

   * What was the outcome of this action?

The end of the emoji UTF8 line displayed text that appeared on that line before 
built-in mutt viewer started, meaning the line was not cleared from its previous
contents.

Here is the actual display:

        abc
        ä·öÈ
        😳😜😅                                     ian                             
       oup
                                                ---                             
       ---

The "ian" and "oup" are from the previous mutt display screen listing all my 
emails in the mailbox, and are not part of the email.  Using Control-L makes 
them properly
disappear.  Doing this test without 'screen' allowed for proper display.

I tested this in Gnome terminal and putty, so I don't think it is the terminal 
emulator.  It might be caused by mutt, but mutt only shows the error when it is 
run as
part of screen.  I tested this with screen default, no screenrc file.  I am not 
sure how to test this further but am open to suggestions.

   * What outcome did you expect instead?

I expected no text from the previous mutt screen to appear.

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 9.8
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-8-amd64 (SMP w/16 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages screen depends on:
ii  libc6      2.24-11+deb9u4
ii  libpam0g   1.1.8-3.6
ii  libtinfo5  6.0+20161126-1+deb9u2

screen recommends no packages.

Versions of packages screen suggests:
pn  byobu | screenie | iselect  <none>
ii  ncurses-term                6.0+20161126-1+deb9u2

-- Configuration Files:
/etc/screenrc changed [not included]

-- no debconf information

--- End Message ---

--- Begin Message ---

Version: 5.0.1-1

Screen 5.x changed utf8_isdouble() to use wcwidth() instead of a hardcoded table.

I expect this should resolve this bug - I have not been able to reproduce.
--- End Message ---