shared-functions

append_to_zshrc() {
  local text="$(sed 's/\\n//g' <<< $1)"
  local zshrc

  if [[ -w "$HOME/.zshrc.local" ]]; then
    zshrc="$HOME/.zshrc.local"
  else
    zshrc="$HOME/.zshrc"
  fi

  if ! grep -Fqs "$text" "$zshrc"; then
    printf "%s\n" "$text" >> "$zshrc"
  fi
}