bat-extras/lib/opt_hook_help.sh

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#!/usr/bin/env bash
# -----------------------------------------------------------------------------
# bat-extras | Copyright (C) 2019-2020 eth-p | MIT License
#
# Repository: https://github.com/eth-p/bat-extras
# Issues: https://github.com/eth-p/bat-extras/issues
# -----------------------------------------------------------------------------
# Option parser hook: --help support.
# This will accept -h or --help, which prints the usage information and exits.
hook_help() {
SHIFTOPT_HOOKS+=("__shiftopt_hook__help")
if [[ "$1" == "--no-short" ]]; then
__shiftopt_hook__help() {
if [[ "$OPT" = "--help" ]]; then
show_help
exit 0
fi
return 1
}
else
__shiftopt_hook__help() {
if [[ "$OPT" = "--help" ]] || [[ "$OPT" = "-h" ]]; then
show_help
exit 0
fi
return 1
}
fi
}