#!/usr/bin/env bash
#
# The Unofficial "Bash Strict Mode".
#
# -e           Failed commands exit.
# -u           Unbound variables exit.
# -o pipefail  Do not hide piped-command failures.
# IFS=$'\n\t'  Newline/Tab separators are good for loops and names with spaces.
#
# Tips:
#
# 1. Avoid unset (unbound) variables. Use default values for:
#   - Positional parameters e.g. `${1:-}`.
#   - Potentially undefined variables e.g. `${ENVVAR:-}`.
#   - Intentionally empty/undefined variables e.g. `MAYBE_EMPTY=""`.
#
# 2. Failed Commands will stop the script. Avoid this by affixing ` || true`.
#
# 3. Strict Options can be toggled, if really required:
#   - Switch off: `set +opt`. Switch back on afterwards: `set -opt`.
#   - Toggle `-e` if the previous return value (`$?`) is needed.
#   - Toggle `-u` if sourcing a non-conforming script.
#
# 4. Exit Traps can perform try-catch-finally-like clean-up tasks.
#
# (These comments are all removed when vim loads this template.)
#
set -euo pipefail
IFS=$'\n\t'