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11;rgb:0c0c/0c0c/0c0c gets printed on terminal when tmux start... seems to be inserted by the bash shell #4642
Description
Issue description
I created a Debian13 Container on Truenas Scale, and access via Windows Terminal. Starting tmux gives me garbage characters at the initial prompt. These seem to be caused by something in the default .bashrc. I inserted an echo at the start of the bash script and the end to isolate it.
^[]11;rthis is start of bashrc
gb:0c0c/0c0c/0c0c^[\end of bashrc
stk@Debian13:~$ 11;rgb:0c0c/0c0c/0c0c
Here is the debug info inside tmux
stk@Debian13:~$ tmux -V
tmux 3.5a
stk@Debian13:~$ uname -sp
Linux unknown
stk@Debian13:~$ echo $TERM
tmux-256color
stk@Debian13:~$
and outside tmux
stk@Debian13:~$ echo $TERM
xterm-256color
.bashrc is causing something to probe the terminal before it's set up.
This is 100% reproducible ... it's a stock debian13 container and I added tmux.
Happy to assist if you have trouble replicating.
Activity
skirsch commentedon Oct 6, 2025
nicm commentedon Oct 6, 2025
No logs and didn't test master. But probably a duplicate of #4634 or #4569 anyway.
skirsch commentedon Oct 6, 2025
For reference, this ONLY happens IF you use BOTH:
All other combinations (such as ssh from WSL, or Windows terminal to a host running tmux 3.3a work fine).
(but there may be .bashrc differences on the system running tmux 3.3a)
github-actions commentedon Nov 6, 2025
This issue has been automatically locked since there has not been any recent activity after it was closed.