Suggestion how to fix IDs for searchBoolean

[dvagas]

Current:

tntsearch/src/TNTSearch.php

Lines 222 to 226 in 781e0ee

	if (count($stack)) {
	$docs = new Collection($stack[0]);
	} else {
	$docs = new Collection;
	}

Suggestion:

        if (count($stack)) {
            $docs = new Collection(array_combine($stack[0],$stack[0]));
        } else {
            $docs = new Collection;
        }

Reason:
When following Build an Index Manually Without a Datastore (no initial seeding of index) you can't get the correct IDs from searchBoolean with driver filesystem otherwise, because:

        if ($this->isFileSystemIndex()) {
            return $this->filesystemMapIdsToPaths($docs)->toArray();
        }

Returns 0,1,2,3, mapped to empty strings instead (unlike for "search" function, where the array key is the correct docId).