X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FContent%2FText%2FHTML.php;h=51515137e56ddd00f3d576e93f4998b7652bf025;hb=2b5f1f8bca010bb6972e7080c02230b04c7b61d3;hp=c77b84db8ab47a485f7219cdea899c2dfc673d11;hpb=ddbe8730ed987e4b8484f5ffa4d23493c227005c;p=friendica.git

diff --git a/src/Content/Text/HTML.php b/src/Content/Text/HTML.php
index c77b84db8a..51515137e5 100644
--- a/src/Content/Text/HTML.php
+++ b/src/Content/Text/HTML.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * @copyright Copyright (C) 2020, Friendica
+ * @copyright Copyright (C) 2010-2021, the Friendica project
  *
  * @license GNU AGPL version 3 or any later version
  *
@@ -605,6 +605,10 @@ class HTML
 		// Collecting all links
 		$urls = self::collectURLs($message);
 
+		if (empty($message)) {
+			return '';
+		}
+
 		@$doc->loadHTML($message, LIBXML_HTML_NODEFDTD);
 
 		self::tagToBBCode($doc, 'html', [], '', '');
@@ -1003,20 +1007,26 @@ class HTML
 			'_blank' => true,
 		]);
 
-		/* Uncomment to debug HTMLPurifier behavior
-		$config->set('Core.CollectErrors', true);
-		$config->set('Core.MaintainLineNumbers', true);
-		*/
+		$config->set('AutoFormat.RemoveEmpty.Predicate', [
+			'colgroup' => [],        // |
+			'th'       => [],        // |
+			'td'       => [],        // |
+			'iframe'   => ['src'],   // ↳ Default HTMLPurify values
+			'i'        => ['class'], // Allows forkawesome icons
+		]);
+
+		// Uncomment to debug HTMLPurifier behavior
+		//$config->set('Core.CollectErrors', true);
+		//$config->set('Core.MaintainLineNumbers', true);
 
 		$HTMLPurifier = new \HTMLPurifier($config);
 
 		$text = $HTMLPurifier->purify($text);
 
 		/** @var \HTMLPurifier_ErrorCollector $errorCollector */
-		/* Uncomment to debug HTML Purifier behavior
-		$errorCollector = $HTMLPurifier->context->get('ErrorCollector');
-		var_dump($errorCollector->getRaw());
-		*/
+		// Uncomment to debug HTML Purifier behavior
+		//$errorCollector = $HTMLPurifier->context->get('ErrorCollector');
+		//var_dump($errorCollector->getRaw());
 
 		return $text;
 	}