99-functions.bash

function ls {
	local orig_args=("$@") d_opt=()
	local -i argc=0

	while [[ $# -gt 0 ]]; do
		case $1 in
		-[aAbBcCdDfgGhHiklLmnNorRsStuUvxXZ1]|--all|--almost-all|--author|--context|--dereference|--dereference-command-line|--dereference-command-line-symlink-to-dir|--directory|--dired|--file-type|--full-time|--group-directories-first|--help|--hide-control-chars|--human-readable|--ignore-backups|--inode|--kibibytes|--literal|--no-group|--numeric-uid-gid|--quote-name|--recursive|--reverse|--show-control-chars|--size|--version|--zero)
			;;
		-[ITpw]*|@(--block-size|--format|--hide|--ignore|--indicator-style|--indicator-style|--quoting-style|--sort|--tabsize|--time|--time-style|--width)?(=*))
			get_opt_and_optarg_gnu "${@:1:2}"
			shift "${OPTSHIFT}"
			;;
		-F*|@(--color|--classify|--hyperlink)?(=*))
			get_opt_and_optarg_gnu @optional "${@:1:2}"
			shift "${OPTSHIFT}"
			;;
		--)
			shift
			argc+="$#"
			break
			;;
		-[!-][!-]*)
			set -- "${1:0:2}" "-${1:2}" "${@:2}"
			continue
			;;
		-?*)
			echo "Unrecognized ls option: $1" >&2
			echo "If this is a valid option, update the wrapper function." >&2
			return 2
			;;
		*)
			argc+=1
			;;
		esac

		shift
	done

	[[ argc -ge 2 ]] && d_opt=(-d)
	command ls --literal --color=always -C "${d_opt[@]}" "${orig_args[@]}" | less -SFR
}