Let git editor be whatever is set as default in the local env.
created global gitignore file
made git ignore-local alias more specific and not override base ignore
tmux emacs mode
if inside emacs, zsh shall not control command-line editing
Changed tmux key binding to C-\
Changed tmux key binding to C-Space
Changed tmux key binding to M-Space, so emacs C-Space to highlight
isn't overridden.