Describe the bug

I use the nounset option set -u in my terminals to prevent silly mistakes. When using this option Oh My Zsh throws errors due to unset variables.

Steps to reproduce

To reproduce, insert

set -u

into the top of your ~/.zshrc and open a new terminal. You will see errors like

_defer_async_git_register:2: RPROMPT: parameter not set                                                
git_prompt_info:1: _omz_git_prompt_info: parameter not set

Expected behavior

There should be no shell errors

Screenshots and recordings

OS / Linux distribution

macOS 26.4.1

Zsh version

5.9

Oh My Zsh version

master (e42ac8c)

Terminal emulator

iTerm2

If using WSL on Windows, which version of WSL

None

Additional context

No response