Wrong controller filter processing because of faulty regular expression generation

[hwiesmann]

Describe the bug
Filters::processFilters methods replaces internally filter expressions with wrong regular expressions.

CodeIgniter 4 version
CodeIgniter4 Beta 0.0.1

Affected module(s)
Filters

Expected behaviour, and steps to reproduce if appropriate
Assume the following filter statement in Config/Filters.php:

public $filters = ['login' => ['before' => ['company/*']]];

This filter setting should set a filter for controller Company. Unfortunately, due to the wrong filter processing also controllers like CompanyXYZ will have the filter applied.

The reason for this wrong behaviour is that - for example - 'company/' is replaced by the regular expression 'company.+' which is basically equivalent with 'company'. But this is not correct.

The two statements responsible for the replacement are:

$path = strtolower(str_replace('/*', '*', $path));
$path = trim(str_replace('*', '.+', $path), '/ ');

I do not know why str_replace('/*', '*', $path) is required?! At least in my example this is the root for the problems.