Pure bash function to convert a list of args into CSV

args2csv.sh

function args2csv {

	typeset -a fields=("$@")
	
	# Escape existing quotes
	fields=("${fields[@]//\"/\"\"}");
	
	# Add " before and after fields
	fields=("${fields[@]/#/\"}")
	fields=("${fields[@]/%/\"}")
	
	# Finally echo with , as separator
	typeset IFS=','
	echo "${fields[*]}"
}

# hello world "hi there" "I'm good" 'quoting " quote' "" "howdy,goody"
# should give:
#  "hello","world","hi there","I'm good","quoting "" quote","","howdy,goody"

args2csv "$@"