HTML Purifier: remove tabs, line breaks and spaces between blocks?

Question

PHP

Anyone using HTML Purifier ?
Tell me how to remove all the trash that remains after applying AutoFormat.AutoParagraph .
For example, to have such input data:

Параграф 1
вторая строка первого параграфа

Параграф 2

Параграф 3

He processed it like this:

<p>Параграф 1<br>вторая строка первого параграфа</p><p>Параграф 2</p><p>Параграф 3</p>

Now the situation looks like this:

<p>Параграф 1
вторая строка первого параграфа</p>

<p>Параграф 2</p>

<p>Параграф 3</p>

Purifier configuration:

$config = HTMLPurifier_Config::createDefault();
$config->set('HTML.DefinitionID', 'ace');
$config->set('HTML.Doctype', 'HTML 4.01 Transitional');
$config->set('Cache.DefinitionImpl', null);
$config->set("HTML.AllowedElements",array("p","ul","ol","li","h4","h5","h6","img","a","b","i","s","u","blockquote","sup","sub","pre","br"));
$config->set("HTML.AllowedAttributes",array("img.src","img.alt","img.title","a.href","a.title"));
$config->set('AutoFormat.AutoParagraph', true);
$config->set('AutoFormat.RemoveEmpty.RemoveNbsp', true);
$config->set('AutoFormat.RemoveEmpty', true);
$config->set('Core.EscapeInvalidTags', true);

Answer 1

On the official forum . They confirmed that there are no built-in tools for solving this problem, you need to use regular expressions :-(

Answer 2

Generally speaking, the line "the second line of the first paragraph" is already the second paragraph. Because a line feed (aka carriage return,
, \n, etc.) is already the end of a paragraph. A double line feed is used to emulate indentation between paragraphs in plain text documents. Accordingly, in html such an indent is entered through css, and not
other garbage.