Hi,

I'm encountering an issue where my environment isn't captured due to a zsh plugin I'm running. I run the tmux plugin for oh-my-zsh with the ZSH_TMUX_AUTOSTART option turned on, which means that when /bin/zsh -i is run, it opens up tmux and causes issues for non-interactive processes opening it up expecting a prompt but getting a tmux instead. I've encountered this issue with my text editor also, but was able to configure my text editor not to use interactive mode, which works for me because I only start up tmux automatically in interactive mode.

I understand that in practice, people are likely to set their environments in their .zshrc, so simply turning off interactive mode would not be an acceptable solution in this case. I'm wondering if you'd be open to a PR which detects whether or not the appropriate environment from running interactive mode, and if not, running non-interactive mode to see if it can gather more environment?