test-repo/tests/format/markdown/math/issue-20135.md

Uses $FOO from a.sh and b.sh, plus $BAR from c.sh, before anything else runs here.

Sourced-from-$DOTFILES files - listed in .stow-local-ignore. They live only inside the repo and are pulled in by .zshrc via $DOTFILES (which is set to ~/.dotfiles in .zshrc). Key examples: exports.zsh, aliases.zsh, dirs.zsh, completions/, _plugins/loader.zsh.