Concrete5.6 and below in subfolder with hidden subfolder

Concrete5.6 .htaccess

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /

RewriteCond %{REQUEST_URI} !^/c5/

# exclude other sub-directories if necessary
RewriteCond %{REQUEST_URI} !^/dev
RewriteCond %{REQUEST_URI} !^/dev2

# exclude ssl stuff
RewriteCond %{REQUEST_URI} !^/[0-9]+\..+\.cpaneldcv$
RewriteCond %{REQUEST_URI} !^/[A-F0-9]{32}\.txt(?:\ Comodo\ DCV)?$
RewriteCond %{REQUEST_URI} !^/\.well-known/acme-challenge/[0-9a-zA-Z_-]+$

RewriteRule ^(.*)$ c5/$1 [L]
</IfModule>

Concrete5.6 index.php

<?php
$myappfolder = 'c5/';
$_SERVER['REDIRECT_URL'] = str_replace($myappfolder, '', $_SERVER['REDIRECT_URL']); 
$_SERVER['ORIG_PATH_INFO'] = str_replace($myappfolder, '', $_SERVER['ORIG_PATH_INFO']);
$_SERVER['PATH_INFO'] = str_replace($myappfolder, '', $_SERVER['PATH_INFO']);
$_SERVER['SCRIPT_NAME'] = str_replace($myappfolder, '', $_SERVER['SCRIPT_NAME']);
require('concrete/dispatcher.php');