flip-name: go from LAST, FIRST to FIRST LAST

flip-name.twig

{#

A twig snippet to change
LASTNAME[, OPTIONALSUFFIX], FIRSTNAME
into
FIRSTNAME LASTNAME[, OPTIONALSUFFIX]

`include` with whitespace removed
e.g. {%- include 'flip-name.html' -%}

optionally include `with {item: YOURTARGET}` and/or `with {separator: YOURSEPARATOR}`
(separator defaults to ", ")

#}
{% set separator = separator|default(', ') %}
{% set names = item.title|split(separator) %}
{% set names_count = names|length %}
{% set first_name = names[names_count - 1] %}
{% set rest = names[0] %}
{% for i in 1..(names_count - 2) if names_count > 2 %}
    {% set rest = rest ~ separator ~ names[i] %}
{% endfor %}
{{first_name}} {{rest}}