Script to easily cd into Github repos, if you keep them all tidy under a single folder like I do

switch-repo.sh

# add this to your .zshrc

switch-repo() {
  local github_dir="$HOME/Github"
  local query="$1"
  local -a repos matches
  local repo name selected

  if [[ ! -d "$github_dir" ]]; then
    print -u2 "switch-repo: $github_dir does not exist"
    return 1
  fi

  repos=("$github_dir"/*(/N))

  if (( ${#repos} == 0 )); then
    print -u2 "switch-repo: no repositories found in $github_dir"
    return 1
  fi

  _switch_repo_choose() {
    local -a options
    options=("$@")
    local selected_index=1
    local number_buffer=""
    local key sequence
    local i marker display_name

    if [[ ! -r /dev/tty ]]; then
      print -u2 "switch-repo: interactive selection requires a terminal"
      return 1
    fi

    while true; do
      print -n "\033[H\033[J"
      print "Select a repository:"
      print "Use up/down + Enter, or type a number + Enter."
      print

      for i in {1..${#options}}; do
        display_name="${options[$i]:t}"
        if (( i == selected_index )); then
          marker=">"
        else
          marker=" "
        fi
        printf "%s %2d) %s\n" "$marker" "$i" "$display_name"
      done

      if [[ -n "$number_buffer" ]]; then
        print
        print -n "Choice: $number_buffer"
      fi

      IFS= read -rs -k 1 key < /dev/tty

      case "$key" in
        $'\e')
          IFS= read -rs -k 2 sequence < /dev/tty
          case "$sequence" in
            '[A')
              (( selected_index-- ))
              if (( selected_index < 1 )); then
                selected_index=${#options}
              fi
              number_buffer=""
              ;;
            '[B')
              (( selected_index++ ))
              if (( selected_index > ${#options} )); then
                selected_index=1
              fi
              number_buffer=""
              ;;
          esac
          ;;
        $'\n'|$'\r')
          if [[ -n "$number_buffer" ]]; then
            if (( number_buffer >= 1 && number_buffer <= ${#options} )); then
              print -n "\033[H\033[J"
              REPLY="${options[$number_buffer]}"
              return 0
            fi
            number_buffer=""
          else
            print -n "\033[H\033[J"
            REPLY="${options[$selected_index]}"
            return 0
          fi
          ;;
        [0-9])
          number_buffer+="$key"
          ;;
        $'\177'|$'\b')
          number_buffer="${number_buffer[1,-2]}"
          ;;
        q|Q)
          print -n "\033[H\033[J"
          return 1
          ;;
      esac
    done
  }

  if [[ -z "$query" ]]; then
    _switch_repo_choose "${repos[@]}" || return 1
    cd -- "$REPLY"
    return
  fi

  for repo in "${repos[@]}"; do
    name="${repo:t}"
    if [[ "${name:l}" == *"${query:l}"* ]]; then
      matches+=("$repo")
    fi
  done

  case ${#matches} in
    0)
      print -u2 "switch-repo: no repositories match '$query'"
      return 1
      ;;
    1)
      cd -- "$matches[1]"
      ;;
    *)
      _switch_repo_choose "${matches[@]}" || return 1
      cd -- "$REPLY"
      ;;
  esac
}

alias sr=switch-repo