I think I found the source of this: byobu_prompt_runtime defined in /usr/share/byobu/profiles/bashrc outputs to stderr instead of stdout. It could be fixed by modifying the function, or just adding 2>&1 to all calls: # cp /usr/share/byobu/profiles/bashrc /usr/share/byobu/profiles/bashrc.bak # sed -i 's/(byobu_prompt_runtime)/(byobu_prompt_runtime 2>\&1)/g' /usr/share/byobu/profiles/bashrc
Versions: bash 5.2.21-2ubuntu4, byobu 6.11-0ubuntu1, tmux 3.4-1ubuntu0.1 Reproduction: - spin up new ubuntu:24.04 instance in e.g. incus - make a non-root user, su to it, launch byobu - get the prompt: [0.002s] test@emerging-dassie:~$ - enter 32 characters (depends on length of hostname): [2.201s] 130 test@emerging-dassie:~$ 12345678901234567890123456789012 - press ctrl-a/home and the cursor will be at the first "s", i.e. 8 characters have been cut off (the same length as "[2.201s]". Longer times result in more characters cut off) - run a command, say ls, then press up until the long line has been reached [38.581s] 130 test@emerging-dassie:~$ ls [0.003s] test@emerging-dassie:~$ 12345678901234567890123456789012 - press down (don't press enter before) [0.003s] test@emerging-dals - the problem above is even worse with a short hostname [0.003s] 1 test@test:~$ which ubuntu_prompt_status [0.003s] 1 test@ - the problem is very evident when pasting commands, less so when typing them. Why does this happen? Inspecting PS1, we see calls to $(byobu_prompt_status), $(byobu_prompt_runtime), $(byobu_prompt_symbol). [2.533s] 130 test@test:~$ byobu_prompt_status | wc -c 6 [0.004s] test@test:~$ byobu_prompt_symbol | wc -c 1 [0.004s] test@test:~$ byobu_prompt_runtime | wc -c [0.001s]0 byobu_prompt_runtime is outputting to stderr instead of to stdout. [0.004s] test@test:~$ byobu_prompt_runtime 2>&1 | wc -c 8 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2067490 Title: byobu prompt To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/byobu/+bug/2067490/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
