Remove newlines and modifiers from thread title

inc/functions.php

@@ -2377,6 +2377,16 @@ function unicodify($body) {
 	return $body;
 }
 
+function end_on_newline($body) {
+	return strstr($body, "\n", true);
+}
+
+// If there is no punctuation before newline, add a full-stop.
+// Then replace all newlines/whitespace with a space.
+function remove_paragraphs($body) {
+	return preg_replace("/\s+/",' ', preg_replace("/\b(?=\n*$)/m",'.',$body));
+}
+
 function extract_modifiers($body) {
 	$modifiers = array();
 	

inc/lib/twig/extensions/Extension/Tinyboard.php

@@ -19,6 +19,8 @@ class Twig_Extensions_Extension_Tinyboard extends Twig_Extension
 			new Twig_SimpleFilter('capcode', 'capcode'),
 			new Twig_SimpleFilter('remove_modifiers', 'remove_modifiers'),
 			new Twig_SimpleFilter('remove_markup', 'remove_markup'),
+			new Twig_SimpleFilter('end_on_newline', 'end_on_newline'),
+			new Twig_SimpleFilter('remove_paragraphs', 'remove_paragraphs'),
 			new Twig_SimpleFilter('hasPermission', 'twig_hasPermission_filter'),
 			new Twig_SimpleFilter('date', 'twig_date_filter'),
 			new Twig_SimpleFilter('poster_id', 'poster_id'),

templates/thread.html

@@ -11,9 +11,10 @@
 
 	{% include 'header.html' %}
 
-	{% set meta_subject %}{% if config.thread_subject_in_title and thread.subject %}{{ thread.subject|e }}{% else %}{{ thread.body_nomarkup|remove_modifiers|remove_markup[:256]|e }}{% endif %}{% endset %}
+	{% set meta_desc %}{{ thread.body_nomarkup|remove_modifiers|remove_markup|remove_paragraphs[:256]|e }}{% endset %}
+	{% set meta_subject %}{% if config.thread_subject_in_title and thread.subject %}{{ thread.subject|e }}{% else %}{{ thread.body_nomarkup|remove_modifiers|remove_markup|end_on_newline[:256]|e }}{% endif %}{% endset %}
 
-	<meta name="description" content="{{ board.url }} - {{ board.title|e }} - {{ meta_subject }}" />
+	<meta name="description" content="{{ board.url }} - {{ board.title|e }} - {{ meta_desc }}" />
 	<meta name="twitter:card" value="summary">
 	<meta property="og:title" content="{{ meta_subject }}" />
 	<meta property="og:type" content="article" />