linux/.config/bash/module/Cd.sh

# CD (back) to directory.
# Finds first directory that matches the input (case-insensitive).
# Usage: cdd <DIR>
function cdd() {
	local target="${1}"
	local array
	local result
	IFS='/' read -r -a array <<< "${PWD}"
	array=("${array[@]:1}")

	# Make search case-insensitive.
	shopt -s nocasematch

	# Find desired dir.
	local found=1
	for (( idx=${#array[@]}-2 ; idx>=0 ; idx-- )); do
		dir="${array[idx]}"
		[[ "${dir}" =~ "${target}" ]] && found=0
		[[ ${found} = 0 ]] && result="/${dir}${result}"
	done

	# Clean-up???
	shopt -u nocasematch

	# Go there!
	if [[ "${result}" != "" ]]; then
		echo "${result}"
		cd "${result}"
	else
		return 1
	fi
}

_cdd_directories() {
	local array
	IFS='/' read -r -a array <<< "${PWD}"
	array=("${array[@]:1}")
	unset array[-1]
	_autocomplete_first "${array[@]}"
}

complete -o nosort -o filenames -F _cdd_directories cdd