Weird character zsh in emacs terminal

Question

When using the terminal in emacs (M-x term) under MacOS for some reason it always posts the characters 4m before every line in zsh and always prints 2 lines containing the u

Answer 1

I needed to set the following environment variables in my ~/.zshrc

export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8
export TERM=xterm-256color