On Sun, Nov 23, 2025 at 05:53:53AM -0500, Thomas Dickey wrote:
> On Sun, Nov 23, 2025 at 05:24:16AM +0000, Adam Reviczky wrote:
> > On Sat, 22 Nov 2025 13:26:16 -0500 Thomas Dickey <
> > [email protected]> wrote:
> > > On Sat, Nov 22, 2025 at 04:47:39PM +0100, Christian Marillat wrote:
> > > > On 22 nov. 2025 10:13, Thomas Dickey <[email protected]>
> > wrote:
> > > >
> > > > > On Sat, Nov 22, 2025 at 03:45:47PM +0100, Christian Marillat wrote:
> > > > >> Package: libncurses6
> > > > >> Version: 6.5+20251115-2
> > > > >> Severity: normal
> > > > >> X-Debbugs-Cc: [email protected]
> > > > >>
> > > > >> Dear Maintainer,
> > > > >>
> > > > >> I can reproduce this issue with armhf, arm64, riscv64 architectures
> > > > >>
> > > > >> zsh is the shell for theses arches.
> > > > >
> > > > > presumably both local and remote systems have comparable package
> > versions.
> > > >
> > > > Yes, all have the same packages.
> > > >
> > > > >> downgrading ncurses related packages to 6.5+20250216-2 solve this
> > issue.
> > > > >
> > > > > there are at least three places where the problem might be:
> > > > >
> > > > > ncurses
> > > > > zsh
> > > > > terminal emulator
> > > > >
> > > > > A "typescript" from the "script" program would show what's written to
> > the
> > > > > terminal, while the environment variables (and output of infocmp) for
> > > > > the local and remote systems would help with the discussion.
> > > >
> > > > E-mail send to quickly.
> > > >
> > > > Here is the remote output.
> > >
> > > The local and remote look much the same (agreeing with that).
> > > Just to check, I updated my testing machine to unstable, and
> > > (same terminal emulator, same shell) don't see this happening.
> > >
> > > I did a 'strings' on zsh and the main libraries (libtinfo6, libcap),
> > > don't see "yes" compiled-in.  It's not in the terminal description.
> > >
> > > Most of the changes for libtinfo since mid-February are specific to
> > > the MinGW/Windows port.
> > >
> > > Since I don't use zsh, my test-configuration is pretty minimal.
> > > I'm guessing that the "yes" comes from some program which is run
> > > from your shell, e.g., for configuring the prompt.  I checked
> > > my configuration to see what zsh might run, by
> > >
> > > urxvt -e strace -fo trace.log zsh
> > >
> > > but in my case, there were no subprocesses of zsh.
> > >
> > > In your typescript files, for each case, the "yes" appears immediately
> > > before enabling or disabling bracketed paste, mode 2004
> > > (which may be coincidental).
> > >
> > > In my trace.log, I see the corresponding 2004's:
> > >
> > > 11657 write(10, "\33[1m\33[7m%\33[27m\33[1m\33[m           "..., 103) =
> > 103
> > > 11657 write(10, "\r\33[m\33[27m\33[24m\33[Jprl-debiancur-6"..., 35) = 35
> > > 11657 write(10, "\33[K", 3)             = 3
> > > 11657 write(10, "\33[?2004h", 8)        = 8
> > > 11657 write(10, "\33[?2004l", 8)        = 8
> > > 11657 write(10, "\r\n", 2)              = 2
> > >
> > > In your configuration, you may see some different process writing the
> > "yes".
> > > (Or if it's really zsh, the open's in the trace would probably include the
> > > file containing that "yes").
> > 
> > The 'yes' is printed out by zle with the 'terminfo' command.
> > 
> > The specific lines from the system-wide zshrc are
> > https://salsa.debian.org/debian/zsh/-/blob/debian/debian/zshrc?ref_type=heads#L76:~:text=printf%20%27%25s%27%20%24%7Bterminfo%5Bsmkx%5D%7D
> >  and
> > https://salsa.debian.org/debian/zsh/-/blob/debian/debian/zshrc?ref_type=heads#L80:~:text=printf%20%27%25s%27%20%24%7Bterminfo%5Brmkx%5D%7D
> > .
> > 
> > You can test this by starting zsh without rc files: zsh -f
> 
> I tried this, didn't see the problem, doing this to (try to) eliminate my
> environment:
> 
>       #!/bin/sh
>       unset TERMINFO
>       unset TERMINFO_DIRS
>       export TERM=xterm-256color

as an afterthought, I recall this was using urxvt.
Commenting out that TERM=, and trying with urxvt gave the same result.

>       strace -fo /tmp/trace.log zsh -f
> 
> The shell doesn't show anything odd.

-- 
Thomas E. Dickey <[email protected]>
https://invisible-island.net

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