Bash script for opening latex source files from a directory

edit.sh

#!/bin/bash

# Sections should each have a ${section}.tex in . and a ${section} directory
# containing their subsections and other content.

function openall {
	if [[ -f "$1.tex" ]] ; then
		OPT="$1.tex"
	else
		OPT=""
	fi
	if [[ -f "$1/refs.bib" ]] ; then
		OPT="${OPT} $1/refs.bib"
	fi
	xed --new-window ${OPT} "$1"/*.tex &
}

if [[ -d "$1" ]] # it is a valid directory
then
	openall "$1"
	exit
fi

echo "Here is a list of valid options:"

# see https://stackoverflow.com/questions/23356779/how-can-i-store-find-command-result-as-arrays-in-bash
options=()
while IFS=  read -r -d  $'\0'; do
	options+=("$REPLY")
done < <(find . -maxdepth 1 -mindepth 0 -type d -print0 | sed 's/\.\///g')
let len=${#options[*]}-1

for i in `seq 0 $len`
do
	echo "$i: ${options[$i]}"
done

REPLY=""
while [[ ! $REPLY ]] ; do
	read -r -p "Enter a number (0 to ${len}): "
done

if [[ -d ${options[$REPLY]} ]]
then
	echo ${options[$REPLY]}
	openall ${options[$REPLY]}
fi