Special characters in `CURRENT_DIR` causes fail

In `scripts/utils.sh`, the variable `CURRENT_DIR` is evaluated by ```bash CURRENT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" ``` which may not escape special characters, e.g., space (even we intentionally put them in ""). Shell: `zsh 5.9` OS: OSX Fix: ```bash TMP_DIR=$(dirname "${BASH_SOURCE[0]}") CURRENT_DIR="$(cd "${TMP_DIR}" && pwd)" ```