Random % sign when opening tilix with zsh as shell

[scott-tancock]

Problem Description

When opening tilix with zsh as the default shell (or by setting custom command to /bin/zsh in the profile settings), a % sign with inverted color (as through it's been highlighted) appears on the first line, with the prompt appearing on the second line:

Steps to Reproduce

• Set default shell to zsh with chsh or usermod -s /bin/zsh $USER
  • Alternatively, Tilix -> Preferences -> Default profile -> Command -> Run a custom command instead of my shell: /bin/zsh
• Open tilix

Expected Outcome

• Prompt on line 1

Actual outcome

• % sign on line 1, colours inverted
• Prompt on line 2
• If using oh-my-zsh, the % sign only appears on the first tilix terminal opened.
  • If you close all tilix terminals, the % sign will appear on the next one you open (since it will be the 'first opened' terminal)

Reproducability

• I have confirmed this is not an issue with my .zshrc by copying .zshrc to .zshrc.bak and then touching .zshrc (bug still occurs with empty .zshrc).
• I have confirmed this is not an issue with bash.
• I have confirmed this does not occur with other terminals (gnome-terminal tested)

[Viibrant]

I have this exact issue as well but with Hyper.js

[hibuna]

I had the same (zsh) after changing a password of a SSH key using ssh-keygen -p. Rebooting debian (WSL) fixed it.

[algj]

Does not seem like an issue with tilix, but a feature of zsh: PROMPT_EOL_MARK tells if previous command did or did not have a trailing newline.

Setting PROMPT_EOL_MARK='' shall fix the issue.

[edgan]

unsetopt PROMPT_SP

For me this is the proper fix. Using PROMPT_EOL_MARK='' gets rid of the %, but leaves a newline in the cases where you would have gotten a %. Where as unsetopt PROMPT_SP behaves as expected.

https://superuser.com/questions/645599/why-is-a-percent-sign-appearing-before-each-prompt-on-zsh-in-windows